CN203332973U - Pulverized coal pressurization conveying system - Google Patents

Pulverized coal pressurization conveying system Download PDF

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Publication number
CN203332973U
CN203332973U CN201320328315XU CN201320328315U CN203332973U CN 203332973 U CN203332973 U CN 203332973U CN 201320328315X U CN201320328315X U CN 201320328315XU CN 201320328315 U CN201320328315 U CN 201320328315U CN 203332973 U CN203332973 U CN 203332973U
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CN
China
Prior art keywords
fine coal
pulverized coal
storage tank
pressure
pressure storage
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CN201320328315XU
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Chinese (zh)
Inventor
吴道洪
徐国壮
肖磊
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北京神雾环境能源科技集团股份有限公司
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Priority to CN201320328315XU priority Critical patent/CN203332973U/en
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Publication of CN203332973U publication Critical patent/CN203332973U/en

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Abstract

The utility model provides a pulverized coal pressurization conveying system which comprises a cloth bag filter, a pulverized coal conveying tank, a pulverized coal lower-pressure storage tank, a pulverized coal lock hopper, a pulverized coal high-pressure storage tank and a rotating feeder. The cloth bag filter is sequentially connected with the pulverized coal conveying tank, the pulverized coal lower-pressure storage tank, the pulverized coal lock hopper, the pulverized coal high-pressure storage tank and the rotating feeder. The gas phase outlet of the pulverized coal lower-pressure storage tank, the gas phase outlet of the pulverized coal lock hopper and the gas phase outlet of the pulverized coal high-pressure storage tank are respectively connected with the cloth bag filter through pipelines, ventilation cannons are arranged inside the pulverized coal conveying tank, the pulverized coal lower-pressure storage tank, the pulverized coal lock hopper, the pulverized coal high-pressure storage tank and the rotating feeder, and the ventilation cannons are of a porous pipeline structure. According to the pulverized coal pressurization conveying system, fluidization, pressurization and discharging of pulverized coal are achieved through the ventilation cannons of which the main components are porous pipelines, and stable conveying and flow adjustment of pulverized coal are achieved through the rotating feeder with a discharge flow guiding device.

Description

A kind of fine coal pressure-flow system

Technical field

The utility model relates to technical field of chemistry and chemical engineering, is specifically related to a kind of fine coal pressure-flow system.

Background technology

Along with the scarcity day by day of petroleum and natural gas resource, the utilization that cleans of coal more and more is subject to people's attention.Develop the key that large-scale Coal Gasification Technology is the clean utilization coal resources.In the middle of large-scale Coal Gasification Technology, the air flow bed technology gets most of the attention.The air-flow bed coal-gasification technology mainly contains the air-flow bed coal-gasification technology such as Shell bed pulverized coal gasification technology (SCGP), G.E. coal water slurry gasification technology and GSP, HT-L, CROLIN, two sections stoves, E-GAS.The air-flow bed coal-gasification technology can be divided into two types of coal water slurry and fine coal chargings by its feeding manner.Facts have proved: the stability of air flow bed charging directly affects gasification efficiency and security of system.The stability of fine coal charging is particularly important, can directly affect the control of oxygen coal ratio and the safe operation of powder coal gasification furnace.In addition, fine coal pressurization and mode of movement also directly affect equipment investment, construction and operating cost.

The fine coal positive delivery method that has realized commercialized running has the fine coal positive delivery technique of the process matchings such as SCGP, HT-L.Such technique typical process is as follows: at first the fine coal from coal-grinding and drying section send into low-pressure tank, through the lock hopper pressurization, sends into pressure storage tank.In the fine coal pressure storage tank, certain unreactable gas is bored with after fine coal mixes by ventilation, through fine coal feeder and fine coal control cock, enters seam, and formation concentration is 150~550kg/m 3coal stream.Such technique is relatively ripe, but the close conveying mutually of fine coal is often unstable, and the coal burner is easily jumped car; The technological process complexity, adopt the frame arrangement equipment up to 100 meters, and equipment and valve are more; Adopted complicated sequence control, regulating loop and technique interlocking, the instrument control investment is also higher; In addition, the aeration equipment that adopts sintering metal to prepare is easy to damage, and expensive.

Domestic disclosed other technology also has the technique that patent CN1376761A sets forth at present.This patent principal feature is that the fine coal pressures partially adopts the sintering metal vent board as fluidizing equipment, and the fine coal transport portion utilizes rotatory feeder valve to control the fine coal discharge quantity, then by carrier gas, carries fine coal to gasification furnace.This patent adopts rotatory feeder valve to control blanking, and aeration equipment is not passed through in carrier gas, fluidisation fine coal well, and fine coal is close to be carried mutually and is difficult to stablely, and the fine coal flow can not accurately be controlled; This technology does not have fine coal driving circulation loop, realizes that the coal burning is chewed normal ignition comparatively difficult; In addition, the sintering metal vent board is expensive, after breakage, also is difficult for changing.

The utility model content

The purpose of this utility model is to solve problems of the prior art, and a kind of novel fine coal pressure-flow system is provided.This system adopts the ventilation big gun that major part is void channels, completes fluidisation, pressurization and the discharging of fine coal; Employing, with the Rotary feeder of blanking guiding device, realizes stable conveying and the flow regulating of fine coal; High-efficiency tissue positive delivery flow process, reduction equipment, construction and over-the-road expense.

The purpose of this utility model is achieved through the following technical solutions:

A kind of fine coal pressure-flow system, comprise cloth envelop collector 1, fine coal transfer pot 2, fine coal low-pressure tank 3, fine coal lock hopper 4, fine coal pressure storage tank 5 and Rotary feeder 6, wherein said cloth envelop collector 1 is connected successively with fine coal transfer pot 2, fine coal low-pressure tank 3, fine coal lock hopper 4, fine coal pressure storage tank 5 and Rotary feeder 6, and the gaseous phase outlet of described fine coal low-pressure tank 3, fine coal lock hopper 4, fine coal pressure storage tank 5 is connected with cloth envelop collector 1 by pipeline respectively.

Described fine coal transfer pot 2, fine coal low-pressure tank 3, fine coal lock hopper 4, fine coal pressure storage tank 5 and Rotary feeder 6 outsides are provided with inert gas import and take over, and inside is equipped with the ventilation big gun, and described ventilation big gun is porous disc coil road structure.

Described Rotary feeder 6 comprises the blanking guiding device, and described blanking guiding device adopts the ventilation big gun structure of porous winding pipeline.

The application the beneficial effects of the utility model:

(1) aeration equipment that the ventilation big gun that the employing void channels are made replaces porous sintered metal to make, facilitated the manufacture of pressure resistant vessel, reduced equipment and established money.

(2) the ventilation big gun is with respect to ventilation cone (plate), not fragile, is convenient to maintenance yet and changes, and has reduced operation expense.

(3) fine coal that adopts pneumatic conveying mode to carry cloth envelop collector to accumulate, cloth envelop collector and fine coal storage tank needn't be connected and be laid, and avoid building too high framework.

(4) pass through the Rotary feeder with the ventilation big gun, fine coal is carried out to fluidisation and conveying, regulate the fine coal flow, avoid using expensive, damageable fine coal control cock, and degree of regulation is higher, the close conveying mutually of fine coal is comparatively stable.

The accompanying drawing explanation

The flow scheme that Fig. 1 is the utility model fine coal pressure-flow system

1-cloth envelop collector 2-fine coal transfer pot 3-fine coal low-pressure tank

4-fine coal lock hopper 5-fine coal pressure storage tank 6-Rotary feeder

The specific embodiment

For the utility model is described better, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.

As shown in Figure 1, fine coal positive delivery process system comprises cloth envelop collector 1, fine coal transfer pot 2, fine coal low-pressure tank 3, fine coal lock hopper 4, fine coal pressure storage tank 5 and Rotary feeder 6.

Wherein, cloth envelop collector 1 is selected the commercially available prod of ash bucket with aeration equipment according to design condition.

Fine coal transfer pot 2 is used for carrying cloth envelop collector 1 to filter the fine coal of gained, and the tank body by an inside with the top discharge pipeline forms; The bottom of top discharge pipeline consists of the ventilation big gun, and the tank body lateral surface has 2~4 entrance sleeves of unreactable gas.

Fine coal low-pressure tank 3 is used for storing fine coal, cone under the cylindrical shell connection of a upper end band end socket, consists of, and lower cone is inverted cone; Lower cone medial surface is provided with the ventilation big gun, and lateral surface has 4~8 entrance sleeves of low-pressure inert gas.

Fine coal lock hopper 4 is used for the fine coal that pressurizes, and connects lower cone by the cylindrical shell of a upper end band end socket and forms, and lower cone is inverted cone; Lower cone medial surface is provided with the ventilation big gun, and lateral surface is provided with 2~4 entrance sleeves of high-pressure inert gas.

Fine coal pressure storage tank 5 is used for storing fine coal, cone under the cylindrical shell connection of a upper end band end socket, consists of, and lower cone is inverted round stage; The inverted round stage inboard is provided with the ventilation big gun, and lateral surface has 2~4 entrance sleeves of high-pressure inert gas.

Rotary feeder 6 is used for water conservancy diversion and fluidisation fine coal, regulates the fine coal flow, and gabarit is hollow cylinder shape or reversed round bench shaped, and there is the blanking guiding device of particular design inside; Inwall is provided with the ventilation big gun, and lateral surface is provided with 1~2 entrance sleeve of unreactable gas.The blanking guiding device is with aeration equipment, by stand to or the traverse gear driven rotary.

The major part of fine coal transfer pot 2, fine coal low-pressure tank 3, fine coal lock hopper 4, fine coal pressure storage tank 5 and Rotary feeder 6 internal ventilation big guns is porous disc coil road, and the major part of blanking guiding device ventilation big gun is the porous winding pipeline.

The technological process that utilizes above-mentioned fine coal pressure-flow system to carry out automatically performs by sequence control, comprises the sequence control of fine coal blowing and sequence of batching products control process.Take the fine coal operational throughput as 200~500kg/h, be forced into 1.0MPa, and the stable process that is transported to powder coal gasification furnace is the example (see figure 1).

(1) from the fine coal of coal-grinding and dehumidification system, (temperature is 80 ℃, liquid water content≤2%; Particle diameter: 5um≤5%, 95um≤5%; Operational throughput: 200~500kg/h), by the sealed type belt conveyor, send into fine coal low-pressure tank (3).

(2) after blowing sequence control initialization, start the sequence control of fine coal blowing, fine coal low-pressure tank 3 is communicated with blowing with fine coal lock hopper 4; Lock hopper 4 blowings finish, and isolation is pressurized to 1.0MPa; After the pressure reduction of fine coal lock hopper 4 and fine coal pressure storage tank 5 reaches permissible value, fine coal lock hopper 4 is communicated with blowing with pressure storage tank 5; After fine coal lock hopper 4 high pressure blowings finish, the isolation pressure release.Enter cloth envelop collector 1 from the emptying unreactable gas of fine coal low-pressure tank 3, fine coal lock hopper 4 and fine coal pressure storage tank 5, emptying after filtering; The fine coal of collecting is sent into fine coal low-pressure tank 3 by fine coal transfer pot 2.

(3) after sequence of batching products is controlled initialization, start sequence of batching products and control, at first the fine coal delivery duct is purged.After purging end, adjust logical Rotary feeder 6 outlet circulation loops, start Rotary feeder 6, set up stable fine coal and circulate.After the stable conveying of fine coal, fine coal switches to the gasification furnace direction, and fine coal enters the coal burner, is lighted a fire; The circulation seam purges.Receive coal and burn while chewing cutoff command, fine coal is switched to circulation loop, and stokehold fine coal pipeline purges; Rotary feeder 6 is out of service, and outlet is cut off and purged.

The above; it is only the preferably specific embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.

Claims (3)

1. a fine coal pressure-flow system, it is characterized in that, comprise cloth envelop collector (1), fine coal transfer pot (2), fine coal low-pressure tank (3), fine coal lock hopper (4), fine coal pressure storage tank (5) and Rotary feeder (6), wherein said cloth envelop collector (1) and fine coal transfer pot (2), fine coal low-pressure tank (3), fine coal lock hopper (4), fine coal pressure storage tank (5) and Rotary feeder (6) connect successively, described fine coal low-pressure tank (3), fine coal lock hopper (4), the gaseous phase outlet of fine coal pressure storage tank (5) is connected with cloth envelop collector (1) by pipeline respectively.
2. a kind of fine coal pressure-flow system according to claim 1, it is characterized in that, described fine coal transfer pot (2), fine coal low-pressure tank (3), fine coal lock hopper (4), fine coal pressure storage tank (5) and Rotary feeder (6) outside are provided with inert gas import and take over, inside is equipped with the ventilation big gun, and described ventilation big gun is porous disc coil road structure.
3. a kind of fine coal pressure-flow system according to claim 1, is characterized in that, described Rotary feeder (6) comprises the blanking guiding device, and described blanking guiding device adopts the ventilation big gun structure of porous winding pipeline.
CN201320328315XU 2013-06-07 2013-06-07 Pulverized coal pressurization conveying system CN203332973U (en)

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Application Number Priority Date Filing Date Title
CN201320328315XU CN203332973U (en) 2013-06-07 2013-06-07 Pulverized coal pressurization conveying system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103112720A (en) * 2013-02-18 2013-05-22 安徽晋煤中能化工股份有限公司 High pressure conveyance gas recovery method
CN103303681A (en) * 2013-06-07 2013-09-18 北京神雾环境能源科技集团股份有限公司 Pulverized coal pressure transmission system and process
CN103787085A (en) * 2014-02-25 2014-05-14 上海捷世欧国际贸易有限公司 Mechanical powdered coal pressurizing device, continuous conveying system and continuous conveying method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103112720A (en) * 2013-02-18 2013-05-22 安徽晋煤中能化工股份有限公司 High pressure conveyance gas recovery method
CN103112720B (en) * 2013-02-18 2015-04-15 安徽晋煤中能化工股份有限公司 High pressure conveyance gas recovery method
CN103303681A (en) * 2013-06-07 2013-09-18 北京神雾环境能源科技集团股份有限公司 Pulverized coal pressure transmission system and process
CN103787085A (en) * 2014-02-25 2014-05-14 上海捷世欧国际贸易有限公司 Mechanical powdered coal pressurizing device, continuous conveying system and continuous conveying method
CN103787085B (en) * 2014-02-25 2015-10-28 航天长征化学工程股份有限公司 A kind of mechanical type fine coal pressure device and continuous conveying system and continus convergence method

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AV01 Patent right actively abandoned

Granted publication date: 20131211

Effective date of abandoning: 20151223

C25 Abandonment of patent right or utility model to avoid double patenting