CN103112720B - High pressure conveyance gas recovery method - Google Patents

High pressure conveyance gas recovery method Download PDF

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Publication number
CN103112720B
CN103112720B CN201310052700.0A CN201310052700A CN103112720B CN 103112720 B CN103112720 B CN 103112720B CN 201310052700 A CN201310052700 A CN 201310052700A CN 103112720 B CN103112720 B CN 103112720B
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China
Prior art keywords
lock hopper
pressure
batch
tank
gas
Prior art date
Application number
CN201310052700.0A
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Chinese (zh)
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CN103112720A (en
Inventor
于涛
亓为华
刘伟
柳春
王吉林
汤心逵
李嗣源
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安徽晋煤中能化工股份有限公司
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Priority to CN201310052700.0A priority Critical patent/CN103112720B/en
Publication of CN103112720A publication Critical patent/CN103112720A/en
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Publication of CN103112720B publication Critical patent/CN103112720B/en

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Abstract

The invention discloses a high pressure conveyance gas recovery method which comprises a first storage tank, a second storage tank, a first locking hopper, a second locking hopper, a first feeding tank, a second feeding tank and a gas coupling tank. After the first feeding tank (second feeding tank) correspondingly receives a batch of power from the first locking hopper (second locking hopper), the first locking hopper (second locking hopper) is separated from the first feeding tank (second feeding tank). The first locking hopper is opened for equalizing pressure with a communication valve of the gas coupling tank, after pressure is balanced, the second locking hopper is opened for equalizing pressure with the communication valve of the gas coupling tank. When pressure of the first locking hopper, the gas coupling tank and the second locking hopper is balanced, the gas coupling tank is isolated, gases are discharged into a powdered coal storage tank so that a filter is used for discharging pressure of the first locking hopper, and meanwhile, pressure conveyance gases are used for punching the second locking hopper. According to the high pressure conveyance gas recovery method, conveyance gases can be partly recycled, energy dissipation is reduced, and recovery use ratio of conveyance gases is 50% compared with a single system.

Description

A kind of high-pressure delivery Gas recovering method

Technical field

The present invention relates to a kind of high-pressure delivery Gas recovering method.

Background technology

In recent years, along with the development of Coal Gasification Technology, dried coal powder pressurized gasification rises rapidly at home, but the N2/CO2 that high pressure coal dust delivery consumes is a large amount of, the emptying completely after conveying of this part conveying gas, causes a large amount of wastes of energy.The present invention can increase conveying gas effciency, emissions reduction, reduction energy resource consumption, and double system or multi-system (even number) interval that can be widely used in high pressure powder conveying puts (defeated) material unit.

In prior art, single system pressurization blowing process is as follows:

Once feeding in raw material in process, fine coal in normal pressure fine coal basin enters fine coal lock hopper by Action of Gravity Field, after being full of fine coal in fine coal lock hopper, namely isolate with fine coal basin and all low-voltage equipments, then pressurize, when its pressure rises to identical with fine coal feed pressure tank, and fine coal to the material level in tank be reduced to be enough to receive a collection of fine coal time, open fine coal lock hopper and fine coal carries out equilibrium of pressure to compensation flap between batch can, then fine coal lock hopper and fine coal is opened successively to the shutoff valve of two between batch can, fine coal enters fine coal to batch can by Action of Gravity Field, after the discharging of fine coal lock hopper completes, by gas discharging is carried out pressure release to fine coal basin filter, after pressure release completes again with fine coal basin UNICOM after equilibrium of pressure, now, once feed in raw material.

Summary of the invention

Object of the present invention provides a kind of high-pressure delivery Gas recovering method, conveying gas can partially recycledly utilize, and reduces energy dissipation, and the recovery utilization rate carrying gas compared with single system is 50%.

Technical scheme of the present invention is as follows:

A kind of high-pressure delivery Gas recovering method, comprises the first basin, the second basin, the first lock hopper, the second lock hopper, first to batch can, gas coupling tank, is characterized in that: specifically comprise following step to batch can, second:

A, basin blowing step: the powder in the first basin, the second basin by Action of Gravity Field respectively correspondence enter the first lock hopper, the second lock hopper;

B, lock hopper pressurization steps: after the first lock hopper, the second lock hopper are full of powder, isolate with the first corresponding basin, the second basin and all low-voltage equipments, UNICOM first lock hopper, the second lock hopper are coupled with gas tank, all press, after equilibrium of pressure, separation gas coupling tank, utilizes high-pressure delivery gas to continue to carry out punching press to the first lock hopper, the second lock hopper, until pressure and corresponding first gives batch can equal to batch can or second, punching press completes;

C, lock hopper blowing step: when the first lock hopper, the second lock hopper pressure and corresponding first give batch can, the second feed pressure tank identical, and first gives batch can, second when being enough to receive a collection of powder to batch can, first of UNICOM first lock hopper, the second lock hopper and correspondence gives batch can, second to batch can, powder enters first to batch can, second to batch can by Action of Gravity Field, after blowing, isolate the first lock hopper, the second lock hopper;

D, lock hopper blowdown step: UNICOM first lock hopper, the second lock hopper are coupled with gas tank, all press, after equilibrium of pressure, separation gas coupling tank, open the first lock hopper, the second lock hopper atmospheric valve, until pressure becomes normal pressure, pressure leak process completes;

Wherein each circulation comprises above four steps, and two overlap the system simultaneously run, and when ensureing first set system lock hopper pressure process, the second cover system is in lock hopper pressure leak process.

By gas coupling tank, the pressurization of two cover systems and pressure leak process are combined.

Compared with prior art, beneficial effect of the present invention is as follows:

1, carry gas partially recycledly to utilize, reduce energy dissipation.Compared with single system, the recovery utilization rate of conveying gas is 50%.Assuming that fine coal lock hopper is coupled with gas, the volume of tank is 50m 3, conveying gas CO 2, fine coal lock hopper operation pressure is 6.0MPa(G), operating temperature is 80 DEG C, circulates each time, under can 1.5MPa being saved, actual gas 65Nm 3.This part conveying gas is compressed into operation pressure theoretical power consumption 62Kw.The i.e. recyclable 62Kw energy of the single complete equipment of each circulation.

2, simple to operate, small investment, meets the expansion tank of operating conditions.

3, lock hopper can realize self-cleaning function with the powder filter be coupled between tank, and during guarantee lock hopper pressure release, powder is not brought into coupling tank.

4, can be widely used in utilizing high-pressure delivery gas to carry the technique of normal pressure powder.

Accompanying drawing explanation

Fig. 1 is process schematic representation of the present invention.

Detailed description of the invention

See accompanying drawing, a kind of high-pressure delivery Gas recovering method, comprises the first basin 1, second basin 2, first lock hopper 3, second lock hopper 4, first to batch can 5, second to batch can 6, gas coupling tank 7, specifically comprises following step:

A, basin blowing step: the powder in the first basin 1, second basin 2 by Action of Gravity Field respectively correspondence enter the first lock hopper 3, second lock hopper 4;

B, lock hopper pressurization steps: after the first lock hopper 3, second lock hopper 4 is full of powder, isolate with the first corresponding basin 1, second basin 2 and all low-voltage equipments, UNICOM first lock hopper 3, second lock hopper 4 is coupled with gas tank 7, all press, after equilibrium of pressure, separation gas coupling tank 7, utilizes high-pressure delivery gas to continue to carry out punching press to the first lock hopper 3, second lock hopper 4, until pressure and corresponding first gives batch can 5 or second equal to batch can 6, punching press completes;

C, lock hopper blowing step: when the first lock hopper 3, second lock hopper 4 pressure and corresponding first gives batch can 5, second identical to batch can 6 pressure, and first when to batch can 5, second to be enough to receive a collection of powder to batch can 6, first of UNICOM first lock hopper 3, second lock hopper 4 and correspondence gives batch can 5, second to batch can 6, powder enters first to batch can 5, second to batch can 6 by Action of Gravity Field, after blowing, isolate the first lock hopper 3, second lock hopper 4;

D, lock hopper blowdown step: UNICOM first lock hopper 3, second lock hopper 4 is coupled with gas tank 7, all presses, after equilibrium of pressure, separation gas coupling tank 7, open the first lock hopper 3, second lock hopper 4 atmospheric valve, until pressure becomes normal pressure, pressure leak process completes;

Wherein each circulation comprises above four steps, and two overlap the system simultaneously run, and when ensureing first set system lock hopper pressure process, the second cover system is in lock hopper pressure leak process.

By gas coupling tank, the pressurization of two cover systems and pressure leak process are combined.

The present invention, by increasing coupling tank in two cover high-pressure delivery techniques, makes two cover techniques unite two into one, realizes the comprehensive application of high-pressure delivery gas, reduce emptying, reduce the loss of material because emptying brings and degradation of energy.Gas coupling tank (as figure), to be coupled tank by gas, and the high pressure realizing set of device is dropped a hint and carried out punching press to the lock hopper of another set of device.The present invention by two cover identical systems couplings together, both can realize the coupling operation of two covering devices, can realize again the independent operation of single complete equipment, switch simple.

Claims (2)

1. a high-pressure delivery Gas recovering method, comprise the first basin, the second basin, the first lock hopper, the second lock hopper, first give batch can, second give batch can, gas coupling tank, it is characterized in that: specifically comprise following step:
A, basin blowing step: the powder in the first basin, the second basin by Action of Gravity Field respectively correspondence enter the first lock hopper, the second lock hopper;
B, lock hopper pressurization steps: after the first lock hopper, the second lock hopper are full of powder, isolate with the first corresponding basin, the second basin and all low-voltage equipments, UNICOM first lock hopper, the second lock hopper are coupled with gas tank, all press, after equilibrium of pressure, separation gas coupling tank, utilizes high-pressure delivery gas to continue to carry out punching press to the first lock hopper, the second lock hopper, until pressure and corresponding first gives batch can equal to batch can or second, punching press completes;
C, lock hopper blowing step: when the first lock hopper, the second lock hopper pressure and corresponding first give batch can, the second feed pressure tank identical, and first gives batch can, second when being enough to receive a collection of powder to batch can, first of UNICOM first lock hopper, the second lock hopper and correspondence gives batch can, second to batch can, powder enters first to batch can, second to batch can by Action of Gravity Field, after blowing, isolate the first lock hopper, the second lock hopper;
D, lock hopper blowdown step: UNICOM first lock hopper, the second lock hopper are coupled with gas tank, all press, after equilibrium of pressure, separation gas coupling tank, open the first lock hopper, the second lock hopper atmospheric valve, until pressure becomes normal pressure, pressure leak process completes;
Wherein each circulation comprises above four steps, and two overlap the system simultaneously run, and when ensureing first set system lock hopper pressure process, the second cover system is in lock hopper pressure leak process.
2. high-pressure delivery Gas recovering method according to claim 1, is characterized in that: the pressurization of two cover systems and pressure leak process are combined by gas coupling tank.
CN201310052700.0A 2013-02-18 2013-02-18 High pressure conveyance gas recovery method CN103112720B (en)

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CN103112720B true CN103112720B (en) 2015-04-15

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103482365B (en) * 2013-09-27 2017-05-24 大连金重鼎鑫科技有限公司 Solid material transporter and method utilizing solid material transporter to recycle high pressure gas
CN103662837B (en) * 2013-11-13 2017-09-19 新奥科技发展有限公司 Dense-phase transporting system and method
CN104194839B (en) * 2014-09-01 2016-08-24 中科合成油工程股份有限公司 Fine coal pressurized delivered is to the method for pressurized-gasification furnace
CN105567335B (en) * 2014-10-13 2018-06-29 彭万旺 A kind of coal dust pressure treatment method
CN104495389B (en) * 2014-12-03 2017-09-08 福建龙净环保股份有限公司 A kind of material conveying method
CN105253631B (en) * 2015-11-18 2018-01-09 神华集团有限责任公司 A kind of powder pressure conveyer device
CN106906005A (en) * 2017-04-17 2017-06-30 航天长征化学工程股份有限公司 A kind of fine coal pressure conveyer device and method
CN110760327B (en) * 2019-10-28 2020-11-13 安徽理工大学 Coal liquefaction device and process
CN110669551B (en) * 2019-10-28 2020-11-13 安徽理工大学 Coal gasification system and method

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CN1702149A (en) * 2005-06-28 2005-11-30 庞玉学 Safety sealing and air flow conveying method for fine coal gasification process
CN1715160A (en) * 2005-07-11 2006-01-04 西安热工研究院有限公司 Dry coal pressure closed phase conveyer with several discharge branches
CN102756920A (en) * 2012-07-30 2012-10-31 巨石集团有限公司 Continuous dense-phase positive-pressure pneumatic conveying apparatus and conveying method
CN203332973U (en) * 2013-06-07 2013-12-11 北京神雾环境能源科技集团股份有限公司 Pulverized coal pressurization conveying system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1702149A (en) * 2005-06-28 2005-11-30 庞玉学 Safety sealing and air flow conveying method for fine coal gasification process
CN1715160A (en) * 2005-07-11 2006-01-04 西安热工研究院有限公司 Dry coal pressure closed phase conveyer with several discharge branches
CN102756920A (en) * 2012-07-30 2012-10-31 巨石集团有限公司 Continuous dense-phase positive-pressure pneumatic conveying apparatus and conveying method
CN203332973U (en) * 2013-06-07 2013-12-11 北京神雾环境能源科技集团股份有限公司 Pulverized coal pressurization conveying system

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Denomination of invention: A method of high pressure gas recovery

Effective date of registration: 20200927

Granted publication date: 20150415

Pledgee: Anhui Linquan rural commercial bank Limited by Share Ltd.

Pledgor: ANHUI JINMEI ZHONGNENG CHEMICAL INDUSTRIAL Co.,Ltd.

Registration number: Y2020980006516