CN107365603A - A kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method - Google Patents
A kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method Download PDFInfo
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- CN107365603A CN107365603A CN201710634877.XA CN201710634877A CN107365603A CN 107365603 A CN107365603 A CN 107365603A CN 201710634877 A CN201710634877 A CN 201710634877A CN 107365603 A CN107365603 A CN 107365603A
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- coal gas
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method, as follows：1）The coal gas of high temperature that melting gasification furnace is discharged is picked out from furnace roof by pipeline, coarse granule separation is carried out into coarse dust removal equipment；2）After being separated by coarse granule, coal gas is sent into gas cooler；3）Coal gas after cooling is sent into bag-type dust equipment, coal gas purified under filtration velocity；4）Secondary cooling is carried out to coal gas by secondary cooling equipment；5）System is pressurizeed by pressue device；Coal gas is divided into 3 parts, is used separately as the pressure coal gas for cooling down gas, melting gasification furnace and reduction furnace of fusion and gasification outlet of still coal gas, remainder is as energy regenerating coal gas.Efficiency of dust collection of the present invention greatly improves, and simultaneity factor resistance damage is low, for gas pressure system after melting gasification furnace, reduces the ability of pressuring machine, reduces energy consumption while reducing investment outlay again.
Description
Technical field
The present invention relates to technical field of industrial dust removal, more particularly to a kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method.
Background technology
Steel and iron industry is to break away from environmental protection requirement, the drop that yoke, adaptation of the coking coal resource shortage to development increasingly improve
Low steel energy consumption, improve steel products structure and improve quality and quality, seek solve steel scrap shortage and waste steel quality not
The disconnected approach deteriorated, the comprehensive utilization for realizing resource, develop the energy based on noncaking coal non-blast furnace ironmaking technology or
Referred to as non-burnt ironmaking technology.
The method of existing shaft furnace gas purification recovery is mainly completed by cleaning coal gas, and this method is mainly continued to use
Traditional blast furnace gas cleaning way, there is mature and reliable, steady performance.But its exist system energy consumption it is higher, take up an area
The shortcomings such as area is big, dedusting is got off the inconvenient transport processing of wet ash, TRT recovery gas turbine generated energy be low.
The content of the invention
Present invention aim to address above-mentioned deficiency, there is provided a kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method.
The present invention technical solution be：A kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method, as follows：1）
The coal gas of high temperature that melting gasification furnace is discharged is picked out from furnace roof by pipeline, coarse granule separation is carried out into coarse dust removal equipment；2）
After being separated by coarse granule, coal gas is sent into gas cooler, is completely heat exchanged and temperature is reduced to 150-200 DEG C；3）
Coal gas after cooling is sent into bag-type dust equipment, coal gas purified under 0.2 ~ 0.3m/min filtration velocity, is collected
To flue dust collect and recycle by Pneumatic conveyer；4）Secondary cooling is carried out to coal gas by secondary cooling equipment；
5）420kPa is forced into system by pressue device；Coal gas is divided into 3 parts, is used separately as fusion and gasification outlet of still coal gas
The pressure coal gas of gas, melting gasification furnace and reduction furnace is cooled down, remainder is as energy regenerating coal gas；6）To being come out by reduction furnace
Raw gas carry out dry-method bag-type dust collecting and energy regenerating：After temperature is reduced to 150-200 DEG C by gas cooler, then enter
Enter bag-type dust facility, under 0.2 ~ 0.3m/min filtration velocity, dust-laden coal gas is by bag-type dust equipment, so as to coal gas
Purified, the flue dust being collected into is collected and recycled by Pneumatic conveyer；7）After by bag-type dust facility
After reduction producer gas converges with melting gasification furnace residual gas, such as meet TRT power generation conditions, then pass through TRT apparatus for energy recovery
Top pressure power generation is carried out, condition is such as unsatisfactory for, is then followed by by bypassing valve group pressure release to gaspipe network.
The present invention has the following advantages：Efficiency of dust collection greatly improves, and simultaneity factor resistance damage is low, for coal gas after melting gasification furnace
For compression system, the ability of pressuring machine is reduced, reduces energy consumption while reducing investment outlay again.
Embodiment
A kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method of the present invention, as follows：1）By fusion and gasification
The coal gas of high temperature that fire grate goes out is picked out from furnace roof by pipeline, and coarse granule separation is carried out into coarse dust removal equipment；2）Pass through coarse granule
After separation, coal gas is sent into gas cooler, is completely heat exchanged and temperature is reduced to 150-200 DEG C；3）After cooling
Coal gas is sent into bag-type dust equipment, coal gas is purified under 0.2 ~ 0.3m/min filtration velocity, the flue dust being collected into leads to
Pneumatic conveyer is crossed to collect and recycle；4）Secondary cooling is carried out to coal gas by secondary cooling equipment；5）Pass through pressurization
Device is forced into 420kPa to system；Coal gas is divided into 3 parts, the cooling gas of fusion and gasification outlet of still coal gas is used separately as, melts
Melt the pressure coal gas of gasification furnace and reduction furnace, remainder is as energy regenerating coal gas；6）To the raw gas come out by reduction furnace
Carry out dry-method bag-type dust collecting and energy regenerating：After temperature is reduced to 150-200 DEG C by gas cooler, enters back into cloth bag and remove
Dirt facility, under 0.2 ~ 0.3m/min filtration velocity, dust-laden coal gas is net so as to be carried out to coal gas by bag-type dust equipment
Change, the flue dust being collected into is collected and recycled by Pneumatic conveyer；7）The reduction furnace after bag-type dust facility will be passed through
After coal gas and melting gasification furnace residual gas converge, such as meet TRT power generation conditions, then carried out by TRT apparatus for energy recovery more than
Pressure electricity, is such as unsatisfactory for condition, is then followed by by bypassing valve group pressure release to gaspipe network.
Claims (1)
- A kind of 1. shaft furnace coal gas dry-method bag-type dust collecting recovery method, it is characterised in that：As follows：1）By fusion and gasification fire grate The coal gas of high temperature gone out is picked out from furnace roof by pipeline, and coarse granule separation is carried out into coarse dust removal equipment；2）Separated by coarse granule Afterwards, coal gas is sent into gas cooler, is completely heat exchanged and temperature is reduced to 150-200 DEG C；3）By the coal gas after cooling Bag-type dust equipment is sent into, coal gas is purified under 0.2 ~ 0.3m/min filtration velocity, the flue dust being collected into passes through gas Power conveying device is collected and recycled；4）Secondary cooling is carried out to coal gas by secondary cooling equipment；5）Pass through pressue device 420kPa is forced into system；Coal gas is divided into 3 parts, is used separately as cooling gas, the melting gas of fusion and gasification outlet of still coal gas Change the pressure coal gas of stove and reduction furnace, remainder is as energy regenerating coal gas；6）The raw gas come out by reduction furnace is carried out Dry-method bag-type dust collecting and energy regenerating：After temperature is reduced to 150-200 DEG C by gas cooler, enters back into bag-type dust and set Apply, under 0.2 ~ 0.3m/min filtration velocity, dust-laden coal gas, so as to be purified to coal gas, is received by bag-type dust equipment The flue dust collected is collected and recycled by Pneumatic conveyer；7）By by the reduction producer gas after bag-type dust facility with After melting gasification furnace residual gas converge, such as meet TRT power generation conditions, then top pressure power generation carried out by TRT apparatus for energy recovery, Condition is such as unsatisfactory for, then is followed by by bypassing valve group pressure release to gaspipe network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710634877.XA CN107365603A (en) | 2017-07-30 | 2017-07-30 | A kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710634877.XA CN107365603A (en) | 2017-07-30 | 2017-07-30 | A kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method |
Publications (1)
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| CN107365603A true CN107365603A (en) | 2017-11-21 |
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| CN201710634877.XA Pending CN107365603A (en) | 2017-07-30 | 2017-07-30 | A kind of shaft furnace coal gas dry-method bag-type dust collecting recovery method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260539A (en) * | 2011-07-01 | 2011-11-30 | 中冶赛迪工程技术股份有限公司 | COREX shaft furnace gas dry process cloth bag dust removal and energy recycling method and system |
| CN202139252U (en) * | 2011-06-24 | 2012-02-08 | 北京首钢国际工程技术有限公司 | Spark collecting type cloth-bag purifying and recycling device using converter coal gas dry method |
| CN103468323A (en) * | 2013-09-13 | 2013-12-25 | 神木富油能源科技有限公司 | Raw coke oven gas dedusting device and raw coke oven gas dedusting method |
-
2017
- 2017-07-30 CN CN201710634877.XA patent/CN107365603A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202139252U (en) * | 2011-06-24 | 2012-02-08 | 北京首钢国际工程技术有限公司 | Spark collecting type cloth-bag purifying and recycling device using converter coal gas dry method |
| CN102260539A (en) * | 2011-07-01 | 2011-11-30 | 中冶赛迪工程技术股份有限公司 | COREX shaft furnace gas dry process cloth bag dust removal and energy recycling method and system |
| CN103468323A (en) * | 2013-09-13 | 2013-12-25 | 神木富油能源科技有限公司 | Raw coke oven gas dedusting device and raw coke oven gas dedusting method |
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Application publication date: 20171121 |