CN107055099A - A kind of urea granules two-phase transportation method and system - Google Patents

A kind of urea granules two-phase transportation method and system Download PDF

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Publication number
CN107055099A
CN107055099A CN201710059655.XA CN201710059655A CN107055099A CN 107055099 A CN107055099 A CN 107055099A CN 201710059655 A CN201710059655 A CN 201710059655A CN 107055099 A CN107055099 A CN 107055099A
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CN
China
Prior art keywords
valve
barrel
gas
phase
pipeline
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710059655.XA
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Chinese (zh)
Inventor
杨腾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI BOLONG POWDER ENGINEERING Co Ltd
Original Assignee
SHANGHAI BOLONG POWDER ENGINEERING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201710059655.XA priority Critical patent/CN107055099A/en
Publication of CN107055099A publication Critical patent/CN107055099A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/36Arrangements of containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/40Feeding or discharging devices
    • B65G53/46Gates or sluices, e.g. rotary wheels

Abstract

A kind of urea granules two-phase transportation method and system, the dense-phase transporting system includes, two-phase transportation source of the gas control unit, rotary unloading valve cell, close phase elutriator and tail gas treating unit.Carrying method is that urea granules hopper is fed from rotated baiting valve to two-phase transportation pipeline, material bolt and conveying gas in two-phase transportation pipeline tangentially enter close phase elutriator barrel, the material and gas of serialization are realized on barrel top, stream is accelerated by accelerating tube, the particulate material of accelerating tube is gone out because inertia departs from air-flow, the separation of particulate material and powder is realized, particulate material enters aggregate bin, then enters downstream silo by gravity rotary valve;Powder is then entrained discharge bucket with air-flow opposite direction into waste line;Enter bag filter entrainment of the conveying tail gas of powder, powder is captured, and gas is discharged after filtering.Present invention firstly provides the concept of close phase elutriator, the material bolt in pipeline passes through the device, you can realize uric acid powder and the separation of pellet of serialization under dense phase conditions.

Description

A kind of urea granules two-phase transportation method and system
Technical field
The present invention relates to materials-handling technology, more particularly to a kind of urea granules two-phase transportation method and system.
Background technology
In view of the features such as pipeline flexible arrangement is easy in air-flow conveying, more environmentally-friendly, maintenance is convenient, control system is simple, has Urea production producer and the user of urea start to wish to carry out material conveying by the way of air-flow is conveyed.
Because urea granules are more crisp, (usual transporting velocity is more than 20 meters per second) is conveyed using dilute-phase pneumatic flow, is easily caused Urea granules are crushed.
Urea granules are entrained with part powder in itself, add and part dust is inevitably resulted from course of conveying, just Wish to use the method for dense-phase air conveying (transporting velocity is less than 10 meters per second) to reduce Particle Breakage, and realize urea granules Substantially the separation of pellet and powder is realized before into purpose feed bin.
The content of the invention
It is an object of the invention to provide a kind of urea granules two-phase transportation method and system, the conveying of collection dense-phase air with Urea granules and the two-phase transportation of dust separation are realized under dense phase conditions.
To reach above-mentioned purpose, the technical scheme is that:
A kind of urea granules dense-phase transporting system, it includes, two-phase transportation source of the gas control unit, including subtracting of setting gradually Pipe and corresponding Pneumatic butterfly valve are cut down in pressure valve, three groups of drawings;Wherein, pressure-reducing valve is arranged in system gas source pipe road;Three groups of drawings cut down pipe and Corresponding Pneumatic butterfly valve is arranged in parallel in the pressure-reducing valve export pipeline;Rotary unloading valve cell, is arranged at hopper outlet pipeline In, it includes rotating blanking valve, gas leakage filter, pressure sensor;Wherein, the hopper outlet pipeline is connected to described The three groups of drawings of two-phase transportation source of the gas control unit are cut down in the pipeline of the pipe port of export, and the rotating blanking valve, gas leakage filter are set It is placed in hopper outlet pipeline;The pressure sensor is arranged at described three groups of drawings of two-phase transportation source of the gas control unit and cuts down pipe outlet In the pipeline at end;Rotating blanking valve gas leakage is discharged through pneumatic filter, and rotary valve is interlocked with pressure sensor;Close phase elutriation Device, including, barrel, its side sets conveying charging aperture, and connects the hopper outlet pipeline by pipeline;Barrel bottom is cone Shape, bottom discharge mouthful;Central tube, is inserted vertically into center in barrel, center infratubal port is located at barrel from the barrel upper end Above bottom opening;Central tube top circumferentially sets some air inlets;Accelerating tube, upper port is connected to the barrel bottom discharge Mouthful, lower port flare;Aggregate bin, its be a cylinder, including, connecting tube, be arranged with outside the accelerating tube, upper port connection In the barrel bottom discharge mouthful;Gather materials body, and upper and lower ends are taper, upper port connection connection infratubal port;Lower port is Discharge gate and gravity rotary valve;Gather materials and set level-sensing device in the middle part of body;Exhaust emission tube, in a ring, is sheathed on the aggregate bin and connects Adapter is outer, and is connected by connecting branch with connecting tube;Tail gas treating unit, including, filter connects described useless by pipeline Gas discharge pipe, and the pipeline sets gas flow regulating valve;Controller, the Pneumatic butterfly valve, pressure sensor, rotating blanking valve, Controller is electrically connected in gravity rotary valve, level-sensing device.
It is preferred that, the barrel center of top is provided with standby exhaust outlet, the central tube upper end open and to should be standby Exhaust outlet, is connected in the filter, and the pipeline by pipeline and sets gas flow regulating valve.
It is preferred that, the filter is bag filter.
The carrying method of urea granules dense-phase transporting system of the present invention, it includes:
A) two-phase transportation source of the gas provides stable bleed pressure by pressure-reducing valve, and sets three groups of drawings and cut down pipe and corresponding pneumatic Butterfly valve, first group of drawing cuts down pipe and provides the gas flow that normal conveying needs for system, and second group of drawing is cut down pipe and carried for rotating blanking valve For leakage gas tolerance, the 3rd group of drawing cuts down pipe for the supplement tolerance needed for system provides blowing pipeline;
B) urea granules hopper is from rotated baiting valve to system feeding, and rotary valve gas leakage is arranged through pneumatic filter Put, rotating speed and the pressure sensor of rotary valve are interlocked, when discharge pressure is more than the 20~50% of the discharge pressure of setting When, rotary valve rotating speed is reduced, declines discharge pressure;
C) the material bolt from two-phase transportation pipeline and conveying gas, tangentially into close phase elutriator barrel, on barrel top The material and gas of serialization are realized, barrel inner central tube intake velocity makes under rotating blanking valve between 20s~30m/s Hopper outlet pipeline blanking velocity is identical with the material blanking velocity by gap between central tube and barrel tapering;Stream passes through Stream is accelerated to 25~35m/s by accelerating tube, has gone out the particulate material of accelerating tube because inertia will be disengaged from air-flow, realize particulate material with The separation of powder, particulate material enters aggregate bin, then enters downstream silo by gravity rotary valve;Powder is then with air-flow opposite direction Into waste line, discharge bucket is entrained;
D) the conveying tail gas entrainment of powder from close phase elutriator, into bag filter, powder is captured, After gas is filtered through bag filter, qualified discharge.
Further, the barrel center of top is provided with standby exhaust outlet, the central tube upper end open and to should be standby Exhaust outlet, the filter is connected by pipeline, and the pipeline sets gas flow regulating valve, and regulation enters the gas stream of accelerating tube Amount.
It is preferred that, the bag filter has the self-cleaning function of automatic back blow wind.
The close phase elutriator of the present invention, it includes, barrel, and its side sets conveying charging aperture, and top, which is set, uses exhaust outlet, and bottom is Taper, bottom discharge mouthful;Central tube, is inserted vertically into center in barrel, center infratubal port is located at material from the barrel upper end Above cylinder bottom opening;Central tube top circumferentially sets some air inlets;Accelerating tube, upper port is connected to the barrel bottom and gone out Material mouth;Aggregate bin, it is a cylinder, including, connecting tube is arranged and outside the accelerating tube, upper port is connected to the barrel bottom Portion's discharging opening;Body, upper and lower ends are taper, upper port connection connection infratubal port;Lower port is discharge gate;Waste gas is discharged Pipe, in a ring, is sheathed on outside the aggregate bin connecting tube, and connected by connecting branch with connecting tube.
It is preferred that, the acceleration infratubal port flare.
It is preferred that, the barrel center of top is provided with standby exhaust outlet and blast pipe, and the central tube upper end open is simultaneously right Should standby exhaust outlet, set gas flow regulating valve on blast pipe
Beneficial effects of the present invention:
Present invention firstly provides the concept of close phase elutriator, the material bolt in pipeline passes through the device, you can realize close phase Under the conditions of serialization uric acid powder and the separation of pellet.
Brief description of the drawings
Fig. 1 is the structural representation of urea granules dense-phase transporting system embodiment of the present invention.
Fig. 2 is the structural representation of close phase elutriator in the embodiment of the present invention.
Embodiment
Referring to Fig. 1, Fig. 2, a kind of urea granules dense-phase transporting system of the invention, it includes,
Two-phase transportation source of the gas control unit 1, including the pressure-reducing valve 11 that sets gradually, three groups of drawings cut down pipe 12~14 and corresponding Pneumatic butterfly valve F1~F3;Wherein, pressure-reducing valve 11 is arranged in system gas source pipe road 100;Pipe 12~14 and series connection phase are cut down in three groups of drawings Pneumatic butterfly valve F1~the F3 answered is arranged in parallel in the export pipeline of pressure-reducing valve 11;
Rotary unloading valve cell 2, is arranged in the export pipeline 201 of hopper 200, and it includes rotating blanking valve 21, leakage gas Body filter 22, pressure sensor 23;Wherein, the hopper outlet pipeline 201 is connected to the two-phase transportation source of the gas control list First 1 three groups of drawings are cut down in the pipeline of the pipe port of export, and the rotating blanking valve 21, gas leakage filter 22 are arranged at hopper outlet pipe In road 201;The pressure sensor 23 is arranged at the pipeline that the pipe port of export is cut down in described 1 three groups of drawings of two-phase transportation source of the gas control unit In;Rotating blanking valve gas leakage is discharged through pneumatic filter, and rotary valve is interlocked with pressure sensor;
Close phase elutriator 3, including,
Barrel 31, its side sets conveying charging aperture 311, and connects the hopper outlet pipeline 201 by pipeline;Barrel 31 Bottom is taper, bottom discharge mouthful 312;
Central tube 32, is inserted vertically into center in barrel 31, the lower port of central tube 32 is located at material from the upper end of barrel 31 Above 31 bottom openings of cylinder;The top of central tube 32 circumferentially sets some air inlets 321;
Accelerating tube 33, upper port is connected to the bottom discharge of barrel 31 mouthful, lower port flare;Aggregate bin 34, its For a cylinder, including,
Connecting tube 341, is arranged and outside the accelerating tube, upper port is connected to the barrel bottom discharge mouthful;
Gather materials body 342, and upper and lower ends are taper, the upper port connection lower port of connecting tube 341;Lower port be discharge gate and Gravity rotary valve 343;Gather materials and set level-sensing device 346 in the middle part of body;
Exhaust emission tube 344, in a ring, is sheathed on outside the aggregate bin connecting tube 341, and by connecting branch 345 with Connecting tube 341 is connected;
Tail gas treating unit 4, including, filter 41 connects the exhaust emission tube 344 by pipeline;
Controller (not shown), the Pneumatic butterfly valve F1~F3, pressure sensor 23, rotating blanking valve 21, gravity rotation Controller is electrically connected in rotary valve 343, level-sensing device 346.
It is preferred that, the center of top of barrel 31 is provided with standby exhaust outlet 313, the upper end open of central tube 32 and correspondingly The standby exhaust outlet 313, the filter 41 is connected by pipeline, and gas flow regulating valve 42 is set in the pipeline.
It is preferred that, the filter 41 is bag filter.
The carrying method of urea granules dense-phase transporting system of the present invention, it includes:
A) two-phase transportation source of the gas provides stable bleed pressure by pressure-reducing valve, and sets three groups of drawings and cut down pipe and corresponding pneumatic Butterfly valve, wherein, first group of drawing cuts down pipe and provides the gas flow that normal conveying needs for system, and second group of drawing cuts down pipe for rotary unloading Valve provides leakage gas tolerance, and the 3rd group of drawing cuts down pipe for the supplement tolerance needed for system provides blowing pipeline;
B) urea granules hopper is from rotated baiting valve to system feeding, and rotary valve gas leakage is arranged through pneumatic filter Put, rotating speed and the pressure sensor of rotary valve are interlocked, when discharge pressure is more than the 20~50% of the discharge pressure of setting, Rotary valve rotating speed is reduced, declines discharge pressure;
C) the material bolt from two-phase transportation pipeline and conveying gas, tangentially into close phase elutriator barrel, on barrel top The material and gas of serialization are realized, barrel inner central tube intake velocity makes the material under rotating blanking valve between 20~30m/s The export pipeline blanking velocity that struggles against is identical with the material blanking velocity by gap between central tube and barrel tapering;Stream is by adding Stream is accelerated to 25~35m/s by fast pipe, has been gone out the particulate material of accelerating tube because inertia will be disengaged from air-flow, has been realized particulate material and powder The separation of material, particulate material enters aggregate bin, then enters downstream silo by gravity rotary valve;Powder is then as air-flow opposite direction is entered Enter waste line, be entrained discharge bucket;
D) the conveying tail gas entrainment of powder from close phase elutriator, into filter (bag filter), powder quilt Seizure is got off, after gas is filtered through bag filter, qualified discharge.
Further, the barrel center of top is provided with standby exhaust outlet, the central tube upper end open, and to should be standby Exhaust outlet, the filter is connected by pipeline, and the pipeline sets gas flow regulating valve, and regulation enters the gas stream of accelerating tube Amount.
It is preferred that, the bag filter has the self-cleaning function of automatic back blow wind.

Claims (9)

1. a kind of urea granules dense-phase transporting system, it is characterised in that including,
Two-phase transportation source of the gas control unit, including the pressure-reducing valve that sets gradually, three groups of drawings cut down pipe and corresponding Pneumatic butterfly valve;Its In, pressure-reducing valve is arranged in system gas source pipe road;Pipe is cut down in three groups of drawings and corresponding Pneumatic butterfly valve is arranged in parallel in the pressure-reducing valve Export pipeline;
Rotary unloading valve cell, is arranged in hopper outlet pipeline, and it includes rotating blanking valve, gas leakage filter, pressure Sensor;Wherein, the hopper outlet pipeline is connected to described three groups of drawings of two-phase transportation source of the gas control unit and cuts down the pipe port of export In pipeline, the rotating blanking valve, gas leakage filter are arranged in hopper outlet pipeline;The pressure sensor is arranged at Described three groups of drawings of two-phase transportation source of the gas control unit are cut down in the pipeline of the pipe port of export;Rotating blanking valve gas leakage is through gas filtration Device is discharged, and rotary valve is interlocked with pressure sensor;
Close phase elutriator, including,
Barrel, its side sets conveying charging aperture, and connects the hopper outlet pipeline by pipeline;Barrel bottom is taper, bottom Portion's discharging opening;
Central tube, is inserted vertically into center in barrel, center infratubal port is located on barrel bottom opening from the barrel upper end Side;Central tube top circumferentially sets some air inlets;
Accelerating tube, upper port is connected to the barrel bottom discharge mouthful, lower port flare;
Aggregate bin, it is a cylinder, including,
Connecting tube, is arranged and outside the accelerating tube, upper port is connected to the barrel bottom discharge mouthful;
Gather materials body, and upper and lower ends are taper, upper port connection connection infratubal port;Lower port is that discharge gate and gravity rotate Valve;Gather materials and set level-sensing device in the middle part of body;
Exhaust emission tube, in a ring, is sheathed on outside the aggregate bin connecting tube, and connected by connecting branch with connecting tube;
Tail gas treating unit, including,
Filter, the exhaust emission tube is connected by pipeline;
Control is electrically connected in controller, the Pneumatic butterfly valve, pressure sensor, rotating blanking valve, gravity rotary valve, level-sensing device Device processed.
2. urea granules dense-phase transporting system as claimed in claim 1, it is characterised in that the barrel center of top is provided with standby With exhaust outlet, the center tube opening and to should standby exhaust outlet, connected and set in the filter, and the pipeline by pipeline Gas flow regulating valve.
3. urea granules dense-phase transporting system as claimed in claim 1 or 2, it is characterised in that the filter is pocket type mistake Filter.
4. the carrying method of urea granules dense-phase transporting system as claimed in claim 1, it is characterized in that, including:
A) two-phase transportation source of the gas provides stable bleed pressure by pressure-reducing valve, and sets three groups of drawings and cut down pipe and corresponding pneumatic butterfly Valve, first group of drawing cuts down pipe and provides the gas flow that normal conveying needs for system, and second group of drawing is cut down pipe and provided for rotating blanking valve Gas tolerance is leaked, the 3rd group of drawing cuts down pipe for the supplement tolerance needed for system provides blowing pipeline;
B) the rotated baiting valve of urea granules hopper is to system feeding, and rotary valve gas leakage is discharged through pneumatic filter, rotation The rotating speed of valve is interlocked with pressure sensor, when discharge pressure is more than the 20~50% of the discharge pressure of setting, reduction rotation Rotary valve rotating speed, declines discharge pressure;
C) the material bolt from two-phase transportation pipeline and conveying gas, tangentially into close phase elutriator barrel, are realized on barrel top The material and gas of serialization, barrel inner central tube intake velocity are controlled between 20~30m/s, make the material under rotating blanking valve The export pipeline blanking velocity that struggles against is identical with the material blanking velocity by gap between central tube and barrel tapering;Stream is by adding Stream is accelerated to 25~35m/s by fast pipe, has been gone out the particulate material of accelerating tube because inertia will be disengaged from air-flow, has been realized particulate material and powder The separation of material, particulate material enters aggregate bin, then enters downstream silo by gravity rotary valve;Powder is then as air-flow opposite direction is entered Enter waste line, be entrained discharge bucket;
D) the conveying tail gas entrainment of powder from close phase elutriator, into bag filter, powder is captured, gas After being filtered through bag filter, qualified discharge.
5. carrying method as claimed in claim 4, it is characterised in that the barrel center of top is provided with standby exhaust outlet, institute State central tube upper end open and to should standby exhaust outlet, the filter is connected by pipeline, and the pipeline sets gas flow Regulating valve, regulation enters the gas flow of accelerating tube.
6. the carrying method of urea granules dense-phase transporting system as claimed in claim 4, it is characterized in that, the bag filter With the self-cleaning function of automatic back blow wind.
7. a kind of urea granules two-phase transportation is with close phase elutriator, it is characterised in that including,
Barrel, its side sets conveying charging aperture, and bottom is taper, bottom discharge mouthful;
Central tube, is inserted vertically into center in barrel, center infratubal port is located on barrel bottom opening from the barrel upper end Side;Central tube top circumferentially sets some air inlets;
Accelerating tube, upper port is connected to the barrel bottom discharge mouthful;
Aggregate bin, it is a cylinder, including,
Connecting tube, is arranged and outside the accelerating tube, upper port is connected to the barrel bottom discharge mouthful;
Body, upper and lower ends are taper, upper port connection connection infratubal port;Lower port is discharge gate;
Exhaust emission tube, in a ring, is sheathed on outside the aggregate bin connecting tube, and connected by connecting branch with connecting tube.
8. close phase elutriator as claimed in claim 7, it is characterised in that the acceleration infratubal port flare.
9. close phase elutriator as claimed in claim 7, it is characterised in that the barrel center of top provided with standby exhaust outlet and Blast pipe, the central tube upper end open and to should standby exhaust outlet, set gas flow regulating valve on blast pipe.
CN201710059655.XA 2017-01-24 2017-01-24 A kind of urea granules two-phase transportation method and system Pending CN107055099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710059655.XA CN107055099A (en) 2017-01-24 2017-01-24 A kind of urea granules two-phase transportation method and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710059655.XA CN107055099A (en) 2017-01-24 2017-01-24 A kind of urea granules two-phase transportation method and system

Publications (1)

Publication Number Publication Date
CN107055099A true CN107055099A (en) 2017-08-18

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ID=59599209

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710059655.XA Pending CN107055099A (en) 2017-01-24 2017-01-24 A kind of urea granules two-phase transportation method and system

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112648052A (en) * 2020-12-25 2021-04-13 一汽解放汽车有限公司 Urea tank pressure maintaining control system and maintenance method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112648052A (en) * 2020-12-25 2021-04-13 一汽解放汽车有限公司 Urea tank pressure maintaining control system and maintenance method thereof

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Address after: No.1356, Xinxie Road, Huaxin Town, Qingpu District, Shanghai, 201708

Applicant after: Shanghai Bolong Equipment Technology Co., Ltd

Address before: No.1356, Xinxie Road, Huaxin Town, Qingpu District, Shanghai, 201708

Applicant before: SHANGHAI BLOOM POWDER ENGINEERING Inc.