CN106241382B - A kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type and its transport system - Google Patents
A kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type and its transport system Download PDFInfo
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- CN106241382B CN106241382B CN201610808630.0A CN201610808630A CN106241382B CN 106241382 B CN106241382 B CN 106241382B CN 201610808630 A CN201610808630 A CN 201610808630A CN 106241382 B CN106241382 B CN 106241382B
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- outer barrel
- material issuing
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- cone bucket
- issuing tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
Abstract
A kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type disclosed by the invention and its transport system, its material issuing tank is internally provided with multiple cone buckets, realize single cone bucket and outer barrel inside material issuing tank, and natural rounding off and being connected without dead band designs between cone bucket and cone bucket, it ensure that in material issuing tank powder freely downward overall flow, prevent interfering with each other and crossfire phenomenon for the gas in material issuing tank between the accumulation of powder, trapping phenomena, and more cone buckets and powder.The system can realize that stablizing for the identical conveying capacity of multichannel of superelevation dense phase powder conveys single material issuing tank under high pressure, and realize with the powder amount of minimum transport medium maximum, avoid easily blocked in streaming tank top discharge mode, the defects of stifled difficult and each road transfer pipeline material conveying capacity that disappears is unstable, possess the regulation performance of preferable powder conveying flow at the same time, equipment reliability of operation and controllability are improved, reduces the quantity of conveying system device.
Description
Technical field
The present invention relates to one kind using pressure sending type multichannel high pressure Dense Phase Pneumatic Conveying to provide ultra-dense phase, high stability, big
The powder material supply material issuing tank and its transport system of conveying capacity, it is hydrogenated with coal gasification especially suitable for dry pulverized coal, IGCC generates electricity,
Chemical industry, it is metallurgical fly, etc. processing industry obtain powder material conveying.
Background technology
Nearly recent decades, with dry coal powder pressure gasifying and hydrogasification, the development of IGCC technology, to reduce transport system
Cost of investment, floor space and system complexity, single tank multichannel high pressure Dense Phase Pneumatic Conveying technology more and more closed
Note.
At present, the coal dust feed technology applied to high pressure dry coal powder gasification process is mostly that fluidisation pot type high pressure Pipe in Dense Phase Pneumatic is defeated
Feed technique.Disclosed technology such as CN101798022B etc. uses streaming tank to be carried out in the form of the discharging of top discharge, bottom discharge or side
High pressure Dense Phase Pneumatic Conveying, it is conveyed, and jar structure is relative complex, and fluidized wind control is more demanding in tank, and delivery pipe must be goed deep into
Fluidisation area in tank, has a certain impact overall flow in tank；Simultaneously because conveying is in fluidization, its pulverized coal conveying concentration
Relatively limited, the high pressure dry coal powder hydrogasification technique for requiring higher coal powder density is not very suitable.For further drop
The cost of investment and floor space of low transport system, simplify transport system, reduce maintenance cost, using single material issuing tank at the same time into
The high pressure mass flow technique of row multichannel powder is increasingly taken seriously.CN101544310A is realized more using a material issuing tank
Road conveys, but the material issuing tank, using air distribution plate, the mode of movement of more discharge nozzles, air chamber structure is complicated, and discharge nozzle is in material issuing tank
Distribution is more and long, destroys space integration structure in material issuing tank so that each road transfer pot conveying inventory can not realize equivalent
Stablize conveying.And easily blocked in tedge accelerating sections, dredge and repair extremely difficult after blocking and take time and effort, to reality
Engineer application brings very big inconvenience.Using the material issuing tank of bottom discharge form, it is disposed with many gas around conical discharge port
Inflow entrance, the size of air-flow injection have a great influence to what is flowed in tank, are unfavorable for conveying stability contorting, and coal powder density is relatively
It is low.CN103213845A installs a star-shaped pocket feeder in material issuing pot bottom and carrys out control material flow rate, this causes material issuing tank to be additionally arranged
Power running component so that high-pressure system security is severely impacted.In addition, the difficult point of single material issuing tank multichannel transfer designs
It is how to ensure that the movement of the powder in material issuing tank has good overall flow performance and one-way flow performance, at the same it is also simultaneous
Care for the interference between overall flow and one-way flow and the coordination system.
The content of the invention
Goal of the invention：For the above-mentioned prior art, propose a kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type and
Its transport system, solves single material issuing tank and uses powder overall flow in the material issuing tank brought during the conveying of multichannel bottom discharge pressure sending type
Or one-way flow is obstructed and flows uneven, and powder overall flow and one-way flow interfering with each other and assisting in material issuing tank
The problem of same-action.
Technical solution：A kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type, including outer barrel and 2~6 cone buckets,
The busbar angle of each cone bucket is 10 °~30 °, and all cone buckets are vertically arranged inside outer barrel, and along outer barrel even circumferential
Distribution；The maximum horizontal section of each cone bucket is respectively positioned on same level, and the central point of the round exit of each cone bucket bottom is extremely
The vertical range of outer barrel internal face is a quarter of outer barrel internal diameter, uses smooth intersection mutual between all cone buckets
Handing-over forms more cone bucket interconnected bodies, and circumferentially the contour of the maximum horizontal section of two neighboring cone bucket a crosspoint is positioned at outer
On cylinder, each cone bucket is connected with outer barrel using smooth intersection.
Further, in the material issuing tank, separator sheet is welded vertically upward along adjacent two cone buckets intersection, the separation
Thin plate is parallel with outer barrel busbar and the wall of one end and outer barrel connects, and the other end of separator sheet is terminated in outer barrel
On mandrel line, it is connected together at all separator sheets highly consistent and central axis in outer barrel；The top of demarcation strip
Horizontal line is held not less than the intersection position of adjacent two cone buckets intersection and outer barrel.
Further, the outer barrel of the material issuing tank has low head, and the low head bottom is equipped with some discharging straight tubes
Section, each straight pipe that discharges correspond to the discharge port of one cone bucket of connection, 8-30 are symmetrically issued in four peripheral wall surfaces of each cone bucket
A a diameter of 5-10 millimeters of aperture；The vomit pipe with baiting valve is equipped with the low head center of material issuing tank outer barrel.
A kind of bottom discharge pressure sending type multichannel High-pressure Super Dense-phase air-transport system, including material issuing tank, the material issuing tank include
Outer barrel and 2~6 cone buckets, the busbar angle of each cone bucket is 10 °~30 °, and all cone buckets are vertically arranged inside outer barrel,
And it is distributed along outer barrel even circumferential；The maximum horizontal section of each cone bucket is respectively positioned on same level, each cone bucket bottom
The vertical range of the central point of round exit to outer barrel internal face is a quarter of outer barrel internal diameter, between all cone buckets
Mutually join to form more cone bucket interconnected bodies using smooth intersection, circumferentially the contour of the maximum horizontal section of two neighboring cone bucket
A crosspoint be located on outer barrel, each cone bucket is connected with outer barrel using smooth intersection.
Further, in the material issuing tank, separator sheet is welded vertically upward along adjacent two cone buckets intersection, the separation
Thin plate is parallel with outer barrel busbar and the wall of one end and outer barrel connects, and the other end of separator sheet is terminated in outer barrel
On mandrel line, it is connected together at all separator sheets highly consistent and central axis in outer barrel；The top of demarcation strip
Horizontal line is held not less than the intersection position of adjacent two cone buckets intersection and outer barrel.
Further, the outer barrel of the material issuing tank has low head, and the low head bottom is equipped with some discharging straight tubes
Section, each straight pipe that discharges correspond to the discharge port of one cone bucket of connection, 8-30 are symmetrically issued in four peripheral wall surfaces of each cone bucket
A a diameter of 5-10 millimeters of aperture.
Further, it is equipped with the vomit pipe with baiting valve at the low head center of material issuing tank outer barrel.
Further, it is equipped with the side of each straight pipe and loosens wind entrance, the loosening wind entrance and outer barrel
The distance of body low head is 100-500mm, described to loosen wind entrance with the angle of low head vertically downward direction less than 90 degree.
Further, each straight pipe be down linked in sequence successively the first contraction section, the second straight pipe, second shrink
Section, by arc powder conveying pipe connecting conveying pipe line, the outlet of the feed-line passes through for the outlet of second contraction section
Imported valve is connected to the entrance of gasification furnace；Wherein, second straight pipe is equipped with high pressure sealing ball valve, the arc powder
Delivery pipe is equipped with tangential feed adjustment wind entrance；Upper cover is equipped with the top of the outer barrel of the material issuing tank, the upper cover
Top is equipped with pressurising mouth；The multiple-channel output of source of the gas is communicated to pressurising mouth by flowmeter and regulating valve respectively, each wind that loosens enters
Mouth and each tangential feed adjustment wind entrance.
Further, the contraction cone wire clamp angle of first contraction section is 8 ° -25 °, and the contraction of second contraction section is bored
Wire clamp angle is 8 ° -25 °；The arc powder conveying pipe R/D ratios are between 8-30.
Beneficial effect：A kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type of the present invention, greatly simplifies hair
The structure of batch can, without any rotatable parts and auxiliary accessory in tank, avoids the complicated of streaming tank form, fluidized wind in tank
The deficiencies of controlling more demanding, delivery pipe unfavorable to powder fluidization and overall flow in tank, eliminates in streaming tank discharge method
Easily block, the defects of stifled difficult and each road transfer pipeline material conveying capacity that disappears is unstable, realize naturally round and smooth inside material issuing tank
Connection, ensure that in material issuing tank powder freely downward overall flow, it is therefore prevented that the accumulation of powder, trapping phenomena in material issuing tank, with
And gas between more cone buckets and powder interfere with each other and crossfire phenomenon.
Cone bucket is non-pressure design in material issuing tank, is rolled and formed using sheet metal, and multiple 5-10 millis are symmetrically provided with cone bucket
The aperture of rice connects come the gas circuit realized between cone bucket and outer barrel, not only significantly reduces the cost of manufacture of material issuing tank and rolls
Difficulty, and the overall performance that flows freely for being powder in cone bucket provides a favorable guarantee, while also so that high-pressure delivery system
System security obtained more it is effectively guaranteed that.
A kind of bottom discharge pressure sending type multichannel High-pressure Super Dense-phase air-transport system of the present invention, based on above-mentioned material issuing tank knot
Structure, can not only realize that multiple spot simultaneous equal stablizes Dense Phase Pneumatic Conveying under single material issuing tank high-pressure high-concentration, coal dust volume is dense
Degree is up to 0.15-0.52, for hydrogen in the case of pumped (conveying) medium, pulverized coal conveying solid-gas ratio is up to 250-300kg coal dusts/kg hydrogen
Gas, considerably reduces the quantity of transport system material issuing tank, reduces cost of investment and the occupation of land face of high pressure dense-phase transporting system
Product；While can also realize the function such as position control conveying and quantitative adjusting, and reach with minimum transport medium maximum
Powder amount, improves equipment reliability of operation and controllability, especially to Geldart-D particle SS later process stability requirement compared with
High and its effect of the technique of superelevation coal powder density is more notable.
Brief description of the drawings
Fig. 1 is the normal cross-section schematic diagram of the high five road Geldart-D particle material issuing tank of densification phase of pressure sending type in embodiment；
Fig. 2 is along section schematic top plan view at A-A in Fig. 1；
Fig. 3 is a kind of structure diagram of five road High-pressure Super Dense-phase air-transport system of bottom discharge pressure sending type.
Embodiment
Further explanation is done to the present invention below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of high five road Geldart-D particle material issuing tank of densification phase of pressure sending type, including outer barrel 1 and 5 cone buckets 4,
The busbar angle of each cone bucket 4 is 10 °~30 °, and all cone buckets 4 are vertically arranged inside outer barrel 1, and along 1 circumference of outer barrel
It is uniformly distributed.The maximum horizontal section of each cone bucket 4 is respectively positioned on same level, in the round exit 3 of each cone bucket bottom
The vertical range of heart point to 1 internal face of outer barrel is a quarter of outer barrel internal diameter, as shown in Figure 2.Between all cone buckets
Mutually join to form more cone bucket interconnected bodies using smooth intersection, circumferentially the week of the maximum horizontal section of two neighboring cone bucket 4
One crosspoint of line is located on outer barrel 1, and each cone bucket 4 is connected with outer barrel 1 using smooth intersection, as shown in Figure 1.Should
Structure is realized natural rounding off between the single cone bucket in material issuing tank inside and outer barrel, and cone bucket and cone bucket and is connected without dead band
Design.Circumferentially a crosspoint of the contour of the maximum horizontal section of two neighboring cone bucket is located on outer barrel, this structure is protected
It is not in control tower to have demonstrate,proved in material issuing tank, so that avoiding the accumulation of powder from causing powder integrally to flow downward is obstructed or is formed powder
Put up a bridge.
Since all cone buckets are welded using intersection with outer barrel, to reduce the cost of manufacture of cone bucket and rolling
Difficulty, cone bucket are rolled using 4-6mm sheet metals and formed, and steel plate material can use ordinary carbon steel or stainless steel, in each cone bucket 4
8-30 apertures 5-10 millimeters a diameter of are symmetrically issued in four peripheral wall surfaces.
Further to lift the stability that each cone bucket independently conveys, hang down in material issuing tank along adjacent two cone buckets intersection
The separator sheet that straight throat thickness upwards is 2-5mm, the separator sheet it is parallel with 1 busbar of outer barrel and with the wall of outer barrel 1
Face is mutually welded, and the separator sheet other end is terminated on the center line of outer barrel 1, all separator sheets highly consistent and in outer barrel
It is connected together on 1 central axis with welding form；The top horizontal line of demarcation strip is not less than adjacent two cone buckets intersection
With the intersection position of outer barrel 1.
The outer barrel 1 of material issuing tank has low head 5, and 5 bottom of low head is equipped with some discharging straight pipes 8, and each discharging is straight
Pipeline section 8 corresponds to the discharge port of one cone bucket 4 of connection, is equipped with the side of each straight pipe 8 and loosens wind entrance 9, loosens wind and enters
Mouth 9 and the distance of outer barrel low head 5 are 100-500mm, and it is small with the angle of 5 vertically downward direction of low head to loosen wind entrance 9
In 90 degree.The vomit pipe 6 with baiting valve 7 is equipped with the low head center of material issuing tank outer barrel 1.
As shown in figure 3, the transport system based on above-mentioned material issuing tank, each straight pipe 8 is down linked in sequence the first receipts successively
Contracting section 10, the second straight pipe 11, the second contraction section 13, the outlet of the second contraction section 13 are connected defeated by arc powder conveying pipe 14
Pipeline 16 is sent, the outlet of feed-line 16 is connected to the entrance of gasification furnace 19 by imported valve 18.Wherein, the second straight pipe 11
Two high pressure sealing ball valve 12a, 12b are equipped with successively, and arc powder conveying pipe 14 is equipped with tangential feed adjustment wind entrance 15.
The contraction cone wire clamp angle of first contraction section 10 is 8 ° -25 °, and the contraction cone wire clamp angle of the second contraction section 13 is 8 ° -25 °.Arc powder
The R/D ratios of body delivery pipe 14 are between 8-30.Feed-line 16 has horizontal segment and vertical section, divides on horizontal segment and vertical section
She You not differential pressure measuring installation 22,23.R/D is the bend pipe arc radius and pipe diameter ratio of arc powder conveying pipe.
The top of outer barrel 1 of material issuing tank is equipped with upper cover 2, the top of upper cover 2 be equipped with material issuing tank pressurising mouth 201,
Powder import 202, material issuing tank relief port 203, material issuing tank nitrogen displacement gas pressurising mouth 204, material issuing tank nitrogen displacement gas relief port
205th, relief valve connection 206, gas sample mouth 207.Material issuing tank material position measurement mouth 208, material issuing tank are equipped with material issuing pot sidewall face
Pressure tap 209, material issuing tank temperature-measuring port 210.Source of the gas 17 is connected respectively to pressurising mouth 201 by multichannel pipeline, each wind that loosens enters
Mouthfuls 9 and each tangential feed adjustment wind entrance 15, per road pipeline on be equipped with the meter of flow 20 and regulating valve 21.
In said structure, the busbar angle of each cone bucket in material issuing tank is designed using 10 ° -30 °, is meeting cone bucket not
It is excessively elongated to cause in the case of processing inconvenience, ensure stocking angle the inclining much smaller than cone bucket wall of any powder in material issuing tank
Oblique angle, reduces delay resistance of the powder in cone bucket wall as far as possible.The design allows the powder in material issuing tank freely whole downwards
Body Uniform Flow, effectively prevent the key technology such as material issuing tank inside and the powder accumulation of connecting portion and unsmooth flowing
Problem.Simultaneously as nature rounding off is realized between cone bucket and outer barrel, and cone bucket and cone bucket and is set without dead band connection
Meter, is designed, this not only greatly facilitates powder in cone bucket in conjunction with the busbar angle of each cone bucket using 10 ° of -30 ° of low-angles
Free-flowing, also so that the depth of cone bucket has appropriate lifting, so as to improve the sealing performance of the powder in cone bucket, and then
Solve the problems, such as in material issuing tank interfering with each other and the generality common technology such as crossfire for powder and air-flow between more cone buckets so that material issuing
Tank can have both been realized outside multichannel simultaneous equal powder conveying, can also realize the operating characteristics that single cone bucket independently conveys.
The design of separator sheet in material issuing tank, by the spaced-apart spatial domain into multiple natural rounding ofves of multiple cone buckets,
Further weaken in material issuing tank interfering with each other and crossfire phenomenon for powder and air-flow between more cone buckets.Separator sheet cannot monolithic or
Part is set, and according to cone bucket quantity polylith must be set independently to separate each cone bucket at the same time when setting separator sheet,
Ensure the harmony between the overall flow of material issuing tank and the mobility and cone bucket of single cone bucket.
All cone buckets symmetrically issue 8-30 5-10 millimeters of aperture phase with being used between outer barrel in four peripheral wall surfaces of cone bucket
Connection, this design can be achieved outer barrel pressure-bearing, and the function of internal cone bucket not pressure-bearing, this reduce cone bucket because of pressure-bearing by larger and
The larger convex-concave deformation of wall and center displacement of the lines etc. in whole or in part of cone bucket caused by caused cone bucket welding position deformation
Serious consequence, and then flow resistance of the powder on cone bucket surface is substantially increased, influence the free mobility of cone bucket inner powder body
Can be with the blanking characteristic of powder.In addition, pressure-bearing can also not avoid the cone bucket interconnected body weld seam caused by cone bucket pressure-bearing to cone bucket
The explosion of material issuing tank caused by tear is dangerous, greatly improves the security performance of material issuing tank.
The discharge gate 6 at the center of the low head of outer barrel be used to excluding when overhauling to leave out by mistake in cone bucket by cone bucket venthole and
Powder in outer barrel crack space, prevents fire and explosive risks caused by dust long-term accumulation.Loosen wind entrance 9 and material issuing tank outer barrel
Body bottom head distance loosens wind entrance and discharging straight pipe arrangement at a certain angle between 100mm-500mm, ensures
Loosening wind direction has the flow tendency flowed upwardly toward in material issuing tank, it is mainly used for preventing powder from putting up a bridge in the cone bucket of material issuing tank
Or channel is formed, ensure powder in material issuing tank generally in loose free state and proper flow；At the same time by controlling the pine
Dynamic wind flow or flow velocity can improve the fluidization characteristic for loosening local cell domain around wind in course of conveying, have and adjust material issuing tank
The effect of powder discharge quantity and material issuing tank powder discharging gas-solid ratio.
Powder and conveying wind are drawn downwards in the first contraction section that all outlet ports discharging straight tube pars infrasegmentalis is all connected with, it shrinks
It is 8 ° -25 ° to bore wire clamp angle, to ensure in the first contraction section powder freely downward overall flow.Each first contraction pars infrasegmentalis goes out
Mouth is respectively connected with the second straight pipe, twice high pressure sealing ball valve is connected with second straight pipe, it is used to control coal in material issuing tank
Powder and transport gas mixture flow downward, and can be used for selectively cutting off the conveying for controlling certain road delivery pipe, with
Close the needs of subsequent technique.The contraction cone wire clamp angle of second contraction section is 8 ° -25 °, to ensure that powder is free in the second contraction section
Downward overall flow.The arc powder conveying pipe of second contraction section outlet lower part connection, its R/D ratio is between 8-30, powder
The arc of delivery pipe is equipped with tangential feed adjustment wind entrance, it is mainly used for the drainage before powder conveying, ensures powder
Normal feed status is delivered into, while when needing to adjust conveying solid-gas ratio, can be by adjusting tangential feed adjustment wind come real
It is existing.
The five tunnel high pressure Dense Phase Pneumatic Conveying material issuing tank of pressure sending type of the present invention is main body, and powder is equipped with the top of material issuing tank
Import, material issuing tank pressure tap, material issuing tank pressurising mouth, material issuing tank relief port, material issuing tank displacement gas pressurising mouth, material issuing tank displacement gas unload
Press mouth, relief valve connection, gas sample mouth；Material issuing tank material position measurement mouth, material issuing tank pressure tap, hair are equipped with material issuing pot sidewall face
Batch can temperature-measuring port.Convey powder to add by the import of material issuing tank powder, when reaching certain material position, stop feeding and closing adding
Expect valve.The loosening wind entrance to be discharged by the pressurising mouth on material issuing tank and material issuing tank lower part on straight pipe is filled with material issuing tank defeated
Medium hydrogen or carbon dioxide or nitrogen are sent, ensures that powder, in loose easy flow regime, reaches in material issuing tank in material issuing tank
Pressurising wind is closed after certain high-voltage value and loosens wind.When making pumped (conveying) medium using hydrogen, hair need to be passed through first with nitrogen
Air in batch can displacement gas pressurising mouth and material issuing tank displacement gas relief port displacement material issuing tank, ensures that oxygen content is less than 0.5%.
Open on powder conveying pipe it is tangential adjust wind system, ensure the superficial gas velocity of initial delivery wind in delivery pipe certain value with
On, the initial delivery tube environment that keeps clear, on the second straight pipe for opening the connection of the first contraction section lower part outlet afterwards
Twice high pressure sealing ball valve, makes material and transport gas mixture in material issuing tank flow downward, and enters normal powder high pressure
Feed status.When needing to adjust powder conveying solid-gas ratio, can be realized by adjusting tangential feed adjustment wind.The pressure of material issuing tank
Power is adjusted by the pressurising wind of material issuing tank pressurising mouth.
With reference to Fig. 3, by taking the five tunnel high pressure Dense Phase Pneumatic Conveyings to high pressure dry coal powder hydrogasification stove for coal dust as an example for
Bright embodiment of the present invention.According to process requirements, normal pressure nitrogen purging is carried out to system first, ensures oxygen in transport system
Content is less than 0.5%.Then powder import is closed after adding coal dust to setting material position by the powder import 202 of material issuing tank 1
202, the air in nitrogen atmospheric replacement material issuing tank 1 is recycled, ensures that oxygen content is less than 0.5% in material issuing tank 1.According to technique
The needs of pressure, by the loosening wind entrance 9 on the discharging straight pipe 8 of the pressurising mouth 201 on material issuing tank 1 and material issuing tank to hair
It is 7-8.6Mpa that coal dust, which carries out hydrogen and is pressurized to pressure, in batch can 1, ensures powder in material issuing tank 1 in loose easily flowing shape
State, the valve of material issuing tank pressurising mouth 201 is closed after the high-voltage value that material issuing tank 1 reaches certain and loosens the valve of wind entrance 9.Dimension
Hold the high 0.2-0.8Mpa of pressure of pressure ratio hydrogasification stove 20 in material issuing tank 1.The tangential conveying opened on powder conveying pipe is adjusted
The valve of wind entrance 15 is saved, ensures the pressure of a little higher than hydrogasification stove 19 of pressure in feed-line 16, then opens hydrogasification
Stove coal dust delivery pipe imported valve 18, maintains the superficial gas velocity of initial delivery wind hydrogen in more than 0.6m/s, to ensure delivery pipe
Interior unobstructed initial environment, successively opens the twice on the second straight pipe 11 of 13 lower part outlet of the first contraction section connection again afterwards
High pressure sealing ball valve 12a, 12b, make coal dust and hydrogen mixture in material issuing tank 1 flow downward, and through the second contraction section 13 and its go out
The arc powder conveying pipe 14 of mouthful lower part connection, into coal dust high-pressure delivery pipeline 16, through coal dust hydrogasification stove nozzle, into
Enter and gasify in coal dust hydrogasification stove 19.After conveying, which reaches, stablizes conveying, close tangential on arc powder conveying pipe
The valve of feed adjustment wind entrance 15.
When needing to adjust coal dust conveying solid-gas ratio, tangentially conveyed by the valve regulated of tangential feed adjustment wind entrance 15
Wind is adjusted to realize.The pressure of material issuing tank 1 is adjusted by the pressurising wind of material issuing tank pressurising mouth 201.
When the coal dust amount in material issuing tank 1 drops to 20-50%, in the case where ensureing that pressure is constant in material issuing tank 1, from
When the powder import 202 of material issuing tank 1 continuously adds coal dust to certain material position, the powder import 202 for closing material issuing tank 1 stops adding
Enter coal dust.When continuing coal powder, it need to ensure that the oxygen content in material issuing tank 1 is less than 0.5%.
During above-mentioned pulverized coal conveying, material issuing tank 1 can realize that five road transfer pipelines convey at the same time, also can be a certain by closing
Twice high pressure sealing ball valve 12a on second straight pipe 11 of 10 lower part outlet of the first contraction section connection on the transfer pipeline of road,
12b realizes the closing to any of which coal dust transfer pipeline all the way.When closing certain road transfer pipeline coal dust conveying, need to open
The valve of tangential feed adjustment wind entrance 15 on the road powder conveying pipeline, maintains the conveying wind hydrogen of the transfer pipeline all the time
Superficial gas velocity in more than 0.6m/s, to prevent the high-temperature gas in gasification furnace 19 to be back in the delivery pipeline system, at the same time
Good initial environment is kept for the coal dust conveying that is again started up of the transfer pipeline.
The above is only the preferred embodiment of the present invention, and the cone bucket quantity in material issuing tank could be provided as needed
2~6, set up bottom discharge pressure sending type multichannel High-pressure Super Dense-phase air-transport system；It should be pointed out that for the general of the art
For logical technical staff, various improvements and modifications may be made without departing from the principle of the present invention, these improve and
Retouching also should be regarded as protection scope of the present invention.
Claims (6)
- A kind of 1. high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type, it is characterised in that：Bored including outer barrel (1) and 2~6 Struggle against (4), the busbar angle of each cone bucket (4) is 10 °~30 °, and all cone buckets (4) are vertically arranged at outer barrel (1) inside, and edge Outer barrel (1) even circumferential is distributed；The maximum horizontal section of each cone bucket (4) is respectively positioned on same level, each cone bucket bottom Round exit (3) central point to outer barrel (1) internal face vertical range be outer barrel internal diameter a quarter, own Mutually join to form more cone bucket interconnected bodies using smooth intersection between cone bucket (4), circumferentially the maximum of two neighboring cone bucket (4) One crosspoint of the contour of horizontal cross-section is located on outer barrel (1), and each cone bucket (4) uses with outer barrel (1) and smoothly mutually passes through Line connects；In the material issuing tank, separator sheet is welded vertically upward along adjacent two cone buckets intersection, the separator sheet and outer barrel (1) busbar is parallel and one end is connected with the wall of outer barrel (1), and the other end of separator sheet terminates in the center of outer barrel (1) On axis, all separator sheets highly consistent is simultaneously connected together at the central axis of outer barrel (1)；The top of demarcation strip Horizontal line is held not less than the intersection position of adjacent two cone buckets intersection and outer barrel (1)；The outer barrel (1) of the material issuing tank has low head (5), and low head (5) bottom is equipped with some discharging straight pipes (8), each discharge the corresponding discharge port for connecting a cone bucket (4) of straight pipe (8), right in four peripheral wall surfaces of each cone bucket (4) Claim to issue 8-30 apertures 5-10 millimeters a diameter of；Band baiting valve (7) is equipped with the low head center of material issuing tank outer barrel (1) Vomit pipe (6).
- A kind of 2. bottom discharge pressure sending type multichannel High-pressure Super Dense-phase air-transport system, it is characterised in that：Including material issuing tank, the hair Batch can includes outer barrel (1) and 2~6 cone buckets (4), and the busbar angle of each cone bucket (4) is 10 °~30 °, all cone buckets (4) It is internal to be vertically arranged at outer barrel (1), and be distributed along outer barrel (1) even circumferential；The maximum horizontal section of each cone bucket (4) is equal Positioned at same level, the vertical range of central point to outer barrel (1) internal face of the round exit (3) of each cone bucket bottom is equal For a quarter of outer barrel internal diameter, mutually join to form more cone bucket interconnected bodies using smooth intersection between all cone buckets (4), Circumferentially a crosspoint of the contour of the maximum horizontal section of two neighboring cone bucket (4) is located on outer barrel (1), each cone bucket (4) it is connected with outer barrel (1) using smooth intersection；In the material issuing tank, separator sheet is welded vertically upward along adjacent two cone buckets intersection, the separator sheet and outer barrel (1) busbar is parallel and one end is connected with the wall of outer barrel (1), and the other end of separator sheet terminates in the center of outer barrel (1) On axis, all separator sheets highly consistent is simultaneously connected together at the central axis of outer barrel (1)；The top of demarcation strip Horizontal line is held not less than the intersection position of adjacent two cone buckets intersection and outer barrel (1)；The outer barrel (1) of the material issuing tank has low head (5), and low head (5) bottom is equipped with some discharging straight pipes (8), each discharge the corresponding discharge port for connecting a cone bucket (4) of straight pipe (8), right in four peripheral wall surfaces of each cone bucket (4) Claim to issue 8-30 apertures 5-10 millimeters a diameter of.
- 3. a kind of bottom discharge pressure sending type multichannel High-pressure Super Dense-phase air-transport system according to claim 2, its feature exist In：The vomit pipe (6) with baiting valve (7) is equipped with the low head center of material issuing tank outer barrel (1).
- 4. a kind of bottom discharge pressure sending type multichannel High-pressure Super Dense-phase air-transport system according to claim 2, its feature exist In：It is equipped with the side of each discharging straight pipe (8) and loosens wind entrance (9), the loosening wind entrance (9) and outer barrel The distance of low head (5) is 100-500mm, and the angle of the loosening wind entrance (9) and low head (5) vertically downward direction is less than 90 degree.
- 5. a kind of bottom discharge pressure sending type multichannel High-pressure Super Dense-phase air-transport system according to claim 2, its feature exist In：Each discharging straight pipe (8) be down linked in sequence successively the first contraction section (10), the second straight pipe (11), second receive Contracting section (13), the outlet of second contraction section (13) are described by arc powder conveying pipe (14) connecting conveying pipe line (16) The outlet of feed-line (16) is connected to the entrance of gasification furnace (19) by imported valve (18)；Wherein, second straight pipe (11) high pressure sealing ball valve (12) is equipped with, the arc powder conveying pipe (14) is equipped with tangential feed adjustment wind entrance (15)；Upper cover (2) is equipped with the top of the outer barrel (1) of the material issuing tank, the top of the upper cover (2) is equipped with pressurising mouth (201)；The multiple-channel output of source of the gas (17) is communicated to pressurising mouth (201) by flowmeter and regulating valve respectively, each wind that loosens enters Mouth (9) and each tangential feed adjustment wind entrance (15).
- 6. a kind of bottom discharge pressure sending type multichannel High-pressure Super Dense-phase air-transport system according to claim 5, its feature exist In：The contraction cone wire clamp angle of first contraction section (10) is 8 ° -25 °, the contraction cone wire clamp angle of second contraction section (13) For 8 ° -25 °；Arc powder conveying pipe (14) the R/D ratios are between 8-30.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808630.0A CN106241382B (en) | 2016-09-08 | 2016-09-08 | A kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type and its transport system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610808630.0A CN106241382B (en) | 2016-09-08 | 2016-09-08 | A kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type and its transport system |
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| CN106241382B true CN106241382B (en) | 2018-05-15 |
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| CN108545483B (en) * | 2018-06-13 | 2024-02-27 | 华东理工大学 | Dense-phase pneumatic conveying equipment and method for powder materials |
| CN111375768A (en) * | 2020-04-14 | 2020-07-07 | 罗哲 | Automatic powder material blanking device of powder metallurgy equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| HU171129B (en) * | 1974-09-20 | 1977-11-28 | Laszlo Kocsanyi | Apparatus for thickening sludge |
| CN1017873B (en) * | 1987-09-18 | 1992-08-19 | 国际壳牌研究有限公司 | Feed hopper design for coal gasifier |
| DE4400457A1 (en) * | 1994-01-11 | 1995-07-13 | E S C H Engineering Service Ce | Method of pneumatically transporting fine granular material |
| JPH07285665A (en) * | 1994-04-19 | 1995-10-31 | Mitsubishi Heavy Ind Ltd | Supply device of powder/grain |
| CN205032404U (en) * | 2015-09-30 | 2016-02-17 | 福建泉能石粉综合利用有限公司 | Marble powder automatic classification collection device |
| CN206013895U (en) * | 2016-09-08 | 2017-03-15 | 东南大学 | A kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type and its induction system |
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