How can you prevent bridging in a dilute phase pneumatic conveying system?

How can you prevent bridging in a dilute phase pneumatic conveying system?
by

1 Answer

Answer :

Manufacturers of these systems recommend bin agitation or blowing air into the top of the feeding bin.  These methods can prevent fine particle from bridging near the rotators valve. Two types of particles  that are especially prone to bridging include titanium dioxide and calcined- kaolin clay.
by

Related questions

What are some common problems associated with dilute phase pneumatic conveying?

Description : What are some commoWhat are some common problems associated with dilute phase pneumatic conveying?

Last Answer : Probably the most common problem encountered in dilute phase pneumatic conveying is the wearing of the rotary valve that serves as an air lock where the product is introduced into the system. If excess ... rotary valve, this can cause bridging of the material the flow can be slowed or stopped.

What are some common problems associated with dense phase pneumatic conveying?

Description : What are some common problems associated with dense phase pneumatic conveying?

Last Answer : Dense phase pneumatic conveying, typically experiences one common problem from system to system: plugging in the line due to a malfunctioning booster valve. Dense phase systems require these booster systems to ... valve. If the check valve becomes stuck, the product is allowed to plug the line.

The capacity of a pneumatic conveying system depends upon the (A) Bulk density of materials (B) Pressure of the conveying air (C) Diameter of the conveying line (D) All (A), (B) and (C)

Description : The capacity of a pneumatic conveying system depends upon the (A) Bulk density of materials (B) Pressure of the conveying air (C) Diameter of the conveying line (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

What is the most common carrier gas used in pneumatic conveying?

Description : What is the most common carrier gas used in pneumatic conveying?

Last Answer : While many applications utilize air as a carrier gas, others are not suited for using air. For example, if the substance being conveyed reactions with moisture in the air or if there is a threat of dust explosions, nitrogen is likely choice.

What types of pneumatic conveying systems are typically used?

Description : What types of pneumatic conveying systems are typically used?

Last Answer : Essentially, there are two types of pneumatic conveying systems. In dilute phase systems, the solids are suspended in the carrier gas and transported to their destination. In dense phase systems, ... is useful if the product degrades easily (works at lower velocities) or is particularly abrasive.

What is pneumatic conveying?

Description : What is pneumatic conveying?

Last Answer : Pneumatic conveying is a method of moving bulk solids from one place to another with the help of a carrier gas. A differential pressure is applied inside a conveying line. The flow always moves from a region of higher to lower pressure.

What is the practical particle size limit for pneumatic conveying?

Description : What is the practical particle size limit for pneumatic conveying?

Last Answer : As a rule, pneumatic conveying will work for particles up to 2 inches in diameter with a typical density. By “typical density”, we mean that a 2 inch particle of a polymer resin can be moved via pneumatic conveying, but a 2 inch lead ball would not.

What is a “saltation velocity” and how is it used in designing pneumatic conveying systems?

Description : What is a “saltation velocity” and how is it used in designing pneumatic conveying systems?

Last Answer : The saltation velocity is defined as the actual gas velocity (in a horizontal pipe run) at which the particles of a homogeneous solid flow will start to fall out of the gas stream. In designing, the ... 2.5 while the factor could be as high as five for course particles such as soybeans could.

IPhone to OS X VPN "Bridging"?

Description : IPhone to OS X VPN "Bridging"?

Last Answer : answer:I have worked with several VPNs and VNCs, cross-network, but only on Windows based machines. But I’m surprised you are having issues in the first place. OS-X is basically a juiced up version of Unix and should be pretty network friendly.

When someone says 'Use Bridging' in a networking context, do they mean Windows adapter bridging or Router bridging?

Description : When someone says 'Use Bridging' in a networking context, do they mean Windows adapter bridging or Router bridging?

Last Answer : Since it is a VPN set up by windows I would guess windows adapter bridging.

The more general task of coreference resolution also includes identifying so-called “bridging relationships” involving referring expressions. a) True b) False

Description : The more general task of coreference resolution also includes identifying so-called “bridging relationships” involving referring expressions. a) True b) False

Last Answer : a) True

Fracture healing occurs in four areas, including the a) external soft tissue. Fracture healing occurs in four areas, including the bone marrow, bone cortex, periosteum, and the external soft tissue, where a bridging callus (fibrous tissue) stabilizes the fracture.

Description : Fracture healing occurs in four areas, including the a) external soft tissue. Fracture healing occurs in four areas, including the bone marrow, bone cortex, periosteum, and the external soft ... and the external soft tissue. Fascia is fibrous tissue that covers, supports, and separates muscles.

Last Answer : a) external soft tissue. Fracture healing occurs in four areas, including the bone marrow, bone cortex, periosteum, and the external soft tissue, where a bridging callus (fibrous tissue) stabilizes the fracture.

Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of ‘scrappers’? (A) Bucket conveyor (B) Flight conveyor (C) Screw conveyor (D) Both (B) and (C)

Description : Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of ‘scrappers’? (A) Bucket conveyor (B) Flight conveyor (C) Screw conveyor (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Material of construction of pipe generally used for conveying water in India is (A) Stainless steel (B) Cast iron (C) Wrought iron (D) Lead lined steel

Description : Material of construction of pipe generally used for conveying water in India is (A) Stainless steel (B) Cast iron (C) Wrought iron (D) Lead lined steel

Last Answer : (B) Cast iron

"People should respect you for who you are." What is a better way of conveying the message?

Description : "People should respect you for who you are." What is a better way of conveying the message?

Last Answer : Nobody will respect you for what you are not.

i. Process of communication, conveying a message in spoken form. ii. A set of interconnected web pages located on a single web domain.

Description : i. Process of communication, conveying a message in spoken form. ii. A set of interconnected web pages located on a single web domain.

Last Answer : Write a word or a term or a phrase that can substitute each of the following statement: i ... . vi. Audio-Visual means of electronic communication.

Which of the following groups of individuals may stare at the floor during conversations as a sign of respect? a) Native Americans Some Native Americans stare at the floor during conversations, conveying respect and indicating that the listener is paying close attention to the speaker. b) Indo-Chinese The Indo-Chinese may consider direct eye contact impolite or aggressive. c) Arabs Arabs may consider direct eye contact impolite or aggressive. d) Asians Asians may consider direct eye contact impolite or aggressive.

Description : Which of the following groups of individuals may stare at the floor during conversations as a sign of respect? a) Native Americans Some Native Americans stare at the floor during conversations ... impolite or aggressive. d) Asians Asians may consider direct eye contact impolite or aggressive.

Last Answer : a) Native Americans Some Native Americans stare at the floor during conversations, conveying respect and indicating that the listener is paying close attention to the speaker.

349- Pods, heads or ears & freeseeds, lost during the cutting & conveying operation are called as..... (a) Cylinder loss (b) Walker losses ( rack loss) (c) Shoe losses (d) Gathering loss

Description : 349- Pods, heads or ears & freeseeds, lost during the cutting & conveying operation are called as..... (a) Cylinder loss (b) Walker losses ( rack loss) (c) Shoe losses (d) Gathering loss

Last Answer : (d) Gathering loss

Pods, heads or ears and free seeds, lost during the cutting and conveying operations are called as (a)cylinder loss (b) walker loss (rack loss) (c)shoe losses (d)gathering loss

Description : Pods, heads or ears and free seeds, lost during the cutting and conveying operations are called as (a)cylinder loss (b) walker loss (rack loss) (c)shoe losses (d)gathering loss

Last Answer : (d)gathering loss

Vertical transportation of materials can be done by a/an (A) Apron conveyor (B) Pneumatic conveyor (C) Bucket elevator (D) Both (B) & (C)

Description : Vertical transportation of materials can be done by a/an (A) Apron conveyor (B) Pneumatic conveyor (C) Bucket elevator (D) Both (B) & (C)

Last Answer : (D) Both (B) & (C)

The most suitable equipment for the transportation of 200 mesh size particles is a (A) Bucket elevator (B) Pneumatic conveyor (C) Screw conveyor (D) Belt conveyor

Description : The most suitable equipment for the transportation of 200 mesh size particles is a (A) Bucket elevator (B) Pneumatic conveyor (C) Screw conveyor (D) Belt conveyor

Last Answer : (B) Pneumatic conveyor

For the transportation of ultrafine particles, the equipment used is a __________ conveyor. (A) Belt (B) Pneumatic (C) Screw (D) None of these

Description : For the transportation of ultrafine particles, the equipment used is a __________ conveyor. (A) Belt (B) Pneumatic (C) Screw (D) None of these

Last Answer : (B) Pneumatic

Which is the most suitable conveyor for transportation of sticky material? (A) Apron conveyor (B) Belt conveyor (C) Screw conveyor (D) Pneumatic conveyo

Description : Which is the most suitable conveyor for transportation of sticky material? (A) Apron conveyor (B) Belt conveyor (C) Screw conveyor (D) Pneumatic conveyo

Last Answer : (C) Screw conveyor

For pumping slurry, one can use a __________ pump. (A) Reciprocating (B) Diaphragm (C) Centrifugal (D) Pneumatic

Description : For pumping slurry, one can use a __________ pump. (A) Reciprocating (B) Diaphragm (C) Centrifugal (D) Pneumatic

Last Answer : (B) Diaphragm

Describe the use of Pneumatic system in daily life.

Description : Describe the use of Pneumatic system in daily life.

Last Answer : I. Automatic tyres are inflated with compressed air. II. Spray guns use compressed air for spraying paints. III. Compressed air is used in air powered tools like hammers and drills IV. It is also used in air brake system in heavy vehicles.

The reaper in a tractor can be raised or lowered by a) Mechanically b) Pneumatic system c) Hydraulic system d) Electric system

Description : The reaper in a tractor can be raised or lowered by a) Mechanically b) Pneumatic system c) Hydraulic system d) Electric system

Last Answer : Hydraulic system

Pneumatic and Hydraulic system which with or without transmission elements provides motion to robot links is called ____________.  1. Motor  2. Sensor  3. Actuator  4. None of the above

Description : Pneumatic and Hydraulic system which with or without transmission elements provides motion to robot links is called ____________.  1. Motor  2. Sensor  3. Actuator  4. None of the above

Last Answer : Joints

Explain the basic components of pneumatic system with neat sketch.

Description : Explain the basic components of pneumatic system with neat sketch.

Last Answer : Ans:- Gas based system is called pneumatic system. A pneumatic system uses compressed air as medium. It consist of element like compressor , reservior , control valve cylinder piston and motor. ... and motor. 5. The control valve operates the cylinder -piston as per load requirement. 

Compare hydraulic and pneumatic system.

Description : Compare hydraulic and pneumatic system.

Last Answer : Criteria Hydraulics Pneumatics Energy Carrier Oil Air Energy conversion From mech.  Hydraulic pumps  Air Compressors Energy transmission Pipes, hoses, tubes etc. ... Low Due to losses in primary conversion, in valves and secondary conversions. Fair to good.

Enlist Merits(Advantages) and demerits(Disadvantages) of Pneumatic system

Description : Enlist Merits(Advantages) and demerits(Disadvantages) of Pneumatic system

Last Answer : Advantages of pneumatic system : 1.Easily available air - The working medium used by pneumatic system is easily and freely available everywhere. 2.Neat and clean system - Due to air being working medium ... is no load on the system where as in hydraulics pressure is developed due to external load. 

State the applications of Pneumatic system.

Description : State the applications of Pneumatic system.

Last Answer : 1.Manufacturing industries, Automotive industry, machine tool manufacturers and domestic and commercial appliance manufacturers. 2.Processing industries, such as chemical, petrochemical, food processing, ... and printing presses. 4.Application of Pneumatics systems is widely in industrial robots

Draw the general layout of Pneumatic system and its symbolic representation?

Description : Draw the general layout of Pneumatic system and its  symbolic representation?

Last Answer : Pneumatic systems are the power transmitting assemblies employing pressurized air to transmit energy from an energy generating source to the application area. Pneumatic system has air as the working medium ( ... figure below. Symbolic representation of general layout of pneumatic system  

Differentiate between pneumatic and hydraulic system.

Description : Differentiate between pneumatic and hydraulic system. 

Last Answer : Pneumatic System Hydraulic System 1 Pneumatic system uses gas for power transmission, after compression and it is used as medium for carrying out mechanical work. ... : In industrial applications, air conditioners Applications: In petrochemical industries, oil refineries.

Draw block diagram of pneumatic system showing its basic components. State the functions of control value and air actuator.

Description : Draw block diagram of pneumatic system showing its basic components. State the functions of control value and air actuator.

Last Answer : Diagram : Control valve: - control and regulates the direction of flow and pressure etc. Air actuator: - Air cylinders and motors are used to obtain the required movements of direction flow.

In electrical-pneumatic system analogy the current is considered analogous to?

Description : In electrical-pneumatic system analogy the current is considered analogous to?

Last Answer : In electrical-pneumatic system analogy the current is considered analogous to air flow rate.

. A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because (A) Total heat transfer area of all the effects is -less than that in a single effect evaporator system (B) Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect (C) Boiling point elevation in a single effect system is much higher than that in any effect in a multi-effect system (D) Heat transfer co-efficient in a single effect is much lower than that in any effect in a multi-effect system

Description : . A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because (A) Total heat transfer area of ... in a single effect is much lower than that in any effect in a multi-effect system

Last Answer : (B) Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect

How does the pneumatic valve work as the flow changes?

Description : How does the pneumatic valve work as the flow changes?

Last Answer : Through pressure differentials.

Hollow air - filled bones ( pneumatic bones ) occurs in

Description : Hollow air - filled bones ( pneumatic bones ) occurs in

Last Answer : Hollow air - filled bones ( pneumatic bones ) occurs in A. Mammals B. Urodela C. Reptiles D. Aves

Pneumatic bones occur in

Description : Pneumatic bones occur in

Last Answer : Pneumatic bones occur in A. Amphibians B. Reptile C. Birds D. Mammals

Pneumatic bones, four chambered heart and feathers occur in

Description : Pneumatic bones, four chambered heart and feathers occur in

Last Answer : Pneumatic bones, four chambered heart and feathers occur in A. Cyclostmata B. Aves C. Mammilia D. Reptilia

Where can I find a pneumatic jumping spider prop for my yard haunt?

Description : Where can I find a pneumatic jumping spider prop for my yard haunt?

Last Answer : You can find a lot of "How To" videos on making your own pneumatic jumping spider. Here is a link to a great how to build a jumping spider; http://www.YouTube.com/watch?v=iY3NZA5ZA2c.

Are all air valves pneumatic?

Description : Are all air valves pneumatic?

Last Answer : Pneumatic is defined as air driven and therefore the two terms are synonomous. However pneumatic is not as frequently used in describing a valve.

How do pneumatic tube systems work?

Description : How do pneumatic tube systems work?

Last Answer : Pneumatic tube systems today are most seen at the drive-through windows of banks. Pneumatic tubes use pressured air to push a sealed object through the system. how do pneumatic truck trailers work?

What is the function of a pneumatic actuator?

Description : What is the function of a pneumatic actuator?

Last Answer : A pneumatic actuator converts energy.The energy is used to make different types of motions.

What machines use pneumatic tube systems?

Description : What machines use pneumatic tube systems?

Last Answer : A variety of automation systems use pneumatic tubes to move material via puffs of air. Bank systems still use them. In the Denver Airport, large pneumatic tubes move aircraft parts around the terminals.

Where would I purchase a pneumatic stapler?

Description : Where would I purchase a pneumatic stapler?

Last Answer : Home Depot is definitely a good place to begin researching and price checking storage tubs. Their website offers a buying guide that may be useful: http://www.newegg.com/Product/Product.aspx? ... that you are interested, compare prices at Lowes, Walmart, Target and other home improvement stores.

Where can I find a pneumatic stapler?

Description : Where can I find a pneumatic stapler?

Last Answer : Clothing racks can be purchased online. Two great options are websites that specialize in store supply products and Amazon.com, which offers a variety of products related to store supply.

External pneumatic compression has been advocated for the prevention of deep venous thrombosis during operative procedures. Which of the following statement(s) concerning the use of external pneumatic compression devices is/are true? a. Intermittent pneumatic compression is as effective as low-dose heparin in prevention of venous thrombosis b. These devices function by compressing the lower extremities therefore augmenting venous return c. Pneumatic compression devices may also exhibit their antithrombotic effect through stimulating local and systemic fibrinolysis d. The length of time that intermittent pneumatic compression should be used includes through the operation and for at least several days in the postoperative period

Description : External pneumatic compression has been advocated for the prevention of deep venous thrombosis during operative procedures. Which of the following statement(s) concerning the use of external pneumatic ... includes through the operation and for at least several days in the postoperative period

Last Answer : Answer: b, c, d In many well-controlled studies of venous prophylaxis, intermittent pneumatic compression has been found to be as effective as low-dose heparin therapy. In addition to augmentation ... be used through the operation and for at least five days in the face or prolonged immobilization