CN106755671A - A kind of top gas handling process and its system - Google Patents
A kind of top gas handling process and its system Download PDFInfo
- Publication number
- CN106755671A CN106755671A CN201611155975.7A CN201611155975A CN106755671A CN 106755671 A CN106755671 A CN 106755671A CN 201611155975 A CN201611155975 A CN 201611155975A CN 106755671 A CN106755671 A CN 106755671A
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- China
- Prior art keywords
- gas
- coal gas
- batch
- valve
- handling process
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/002—Evacuating and treating of exhaust gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention discloses a kind of top gas handling process, including：After furnace top material tank for blast furnace charging, batch can lower sealing valve is closed, and the high pressure gas in the batch can carries out removal process or bulk storage process；The removal process includes：Opening presses the coal gas recovery valve, the high pressure gas to carry out dedusting and decompression into sack cleaner by the recovery pipe, is pressed coal gas, bulk cement storage tank to store the coal gas dust that the sack cleaner is produced；Obtain the pressure coal gas and enter clean coal gas pipe network.The technique coal gas high treating effect, noise pollution is small, effectively reduces atmosphere pollution, and coal-gas recovering rate is high.
Description
Technical field
The present invention relates to steel industry view, and in particular to a kind of top gas handling process and its system.
Background technology
The increasingly serious environmental requirement of steel industry and Market Situation, it is desirable to which iron and steel enterprise must accomplish energy-saving and emission-reduction, drop
Low cost.Blast furnace ironmaking operation discharge amount of pollution occupies the major part of whole steel industry discharge capacity, therefore, reduce Iron-smelting
Discharge capacity seems particularly necessary.
Currently, technique is directly diffused to sky using pressure coal gas more, when diffusing, substantial amounts of dust enters in air, not only
Air, noise pollution are caused to environment, and is a kind of huge economic waste.
The content of the invention
In view of this, the invention provides a kind of top gas handling process and its system, the technique and its it is
System coal gas high treating effect, noise pollution is small, effectively reduces atmosphere pollution, and coal-gas recovering rate is high.
To solve above technical problem, the technical scheme that the present invention is provided is to provide science and engineering at a kind of top gas
Skill, including：
After furnace top material tank for blast furnace charging, batch can lower sealing valve is closed, and the high pressure gas in the batch can carries out removal process
Or dissipate process；The removal process includes：Opening presses coal gas recovery valve, the high pressure gas to enter by the recovery pipe
Entering sack cleaner carries out dedusting and decompression, is pressed coal gas, the coal gas dust that bulk cement storage tank is produced to the sack cleaner
Stored；Obtain the pressure coal gas and enter clean coal gas pipe network.
Preferably, the coal gas dust for being produced using the sack cleaner is transported in the batch can.
Preferably, the coal gas dust is transported in the batch can through cinder-discharging port, unloading valve and ash conveying pipe.
Preferably, the decompression process is specially：Open on the purified gas recovery channel of sack cleaner top connection
Blank-plate valve and stop valve are depressurized.
Preferably, the pressure gas pressure 1~2kPa higher than purified gas ductwork pressure.
Preferably, the purified gas ductwork pressure is 10~15kPa.
Preferably, the bulk storage process includes：Diffusion valve is opened, the high pressure gas in the batch can is through diffusing pipeline to rotation
Air is entered after wind deduster dedusting.
Preferably, the switching for carrying out removal process or dissipating process is automatically controlled by PLC.
Present invention also offers a kind of top gas system for handling, including：Batch can, coal gas recovery valve, recovery pipe,
Sack cleaner, bulk cement storage tank, purified gas recovery channel, clean coal gas pipe network, the batch can is by the recovery pipe and the cloth
Bag dust collector is connected, and the sack cleaner lower end is provided with the bulk cement storage tank, and the sack cleaner top passes through the clean coal
Gas recovery channel is connected with the clean coal gas pipe network.
Preferably, the bulk cement storage tank has cinder-discharging port, and the cinder-discharging port is connected by ash conveying pipe with the batch can；Institute
State ash conveying pipe and be provided with unloading valve with cinder-discharging port junction lower end.
Preferably, the purified gas recovery channel is provided with blank-plate valve and stop valve.
Preferably, the system for handling also includes diffusion valve, diffuses pipeline and cyclone dust collectors, and the cyclone dust collectors lead to
The pipeline that diffuses is crossed to be connected with batch can；The pipeline that diffuses is provided with the diffusion valve.
Preferably, butterfly valve and gate valve are equipped with the recovery pipe and the purified gas recovery channel.
Preferably, sealing valve is set under the batch can.
Compared with prior art, its detailed description is as follows for the application：
The application coal gas high treating effect, dust content of gas ＜ 5mg/m after recovered process treatment3, reaching purified gas makes
Required with user, coal-gas recovering rate is more than 80%；
, due to being high pressure gas in the recovery pipe of batch can, high pressure gas air-flow is in the pipeline for before pulsed for the application
Enter, relatively direct that sky is diffused, friction, covibration to pipeline are substantially eliminated, and are thus abated the noise；
The application is automatically controlled using PLC system and switches back into receipts process online and diffuse process, does not influence blast furnace normally to give birth to
Produce, can make the recovery system according to blast furnace difference operating mode from two kinds of coal gas processing mode, reduce and avoid recovery system opposite
Produce operation and produce influence, while reducing maloperation, improve security；
The application handling process is simple, solves the problems, such as directly to put idle discharge the environmental pollution and the wasting of resources for causing.
Specific embodiment
Brief description of the drawings
Fig. 1 is the structural representation of top gas processing system of the present invention.
Specific embodiment
The invention discloses a kind of top gas handling process and its system, the technique and its system coal gas are processed
Effect is good, and noise pollution is small, effectively reduces atmosphere pollution, and coal-gas recovering rate is high.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiments of the invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
Embodiment 1：
As shown in figure 1, a kind of top gas handling process, including：
After furnace top material tank for blast furnace charging, the lower sealing valve 18 of batch can 1 is closed, and the high pressure gas in the batch can reclaimed
Journey dissipates process；The removal process includes：Pressure coal gas recovery valve 2 is opened, the high pressure gas is entered by recovery pipe 3
Entering sack cleaner 4 carries out dedusting and decompression, is pressed coal gas, the gas ash that 5 pairs of sack cleaners 4 of bulk cement storage tank are produced
Dirt is stored；Obtain the pressure coal gas and enter clean coal gas pipe network 7.
The coal gas dust produced using the sack cleaner 4 is transported in the batch can 1.The coal gas dust warp
Cinder-discharging port 8, unloading valve 10 and ash conveying pipe 9 are transported in the batch can 1.The decompression process is specially：Open bag-type dust
Blank-plate valve 11 and stop valve 12 on the purified gas recovery channel 6 of the top of device 4 connection are depressurized.The bulk storage process includes：
Diffusion valve 13 is opened, the high pressure gas in the batch can 1 enters air after diffusing pipeline 14 to the dedusting of cyclone dust collectors 15.It is logical
Cross PLC and automatically control the switching for carrying out removal process or dissipating process.
The pressure of clean coal gas pipe network 7 is 10~15kPa after measured, and the pressure gas pressure is than purified gas ductwork pressure
1~2kPa high；Through the dust content of gas ＜ 5mg/m after treatment3, coal-gas recovering rate is more than 80%；The process of diffusing diffuses a dant
Gas 66.5Nm3/ time, the process of diffusing diffuses one day coal gas 2.55 × 104Nm3/ day；Removal process reclaim one day coal gas 2.04 ×
104Nm3/ time, removal process reclaims one day coal gas 7.15 × 106Nm3/ day.
Embodiment 2
As shown in figure 1, a kind of top gas system for handling, including：Batch can 1, coal gas recovery valve 2, recovery pipe 3,
Sack cleaner 4, bulk cement storage tank 5, purified gas recovery channel 6, clean coal gas pipe network 7, the batch can 1 by the recovery pipe 3 with
The sack cleaner 4 is connected, and the lower end of the sack cleaner 4 is provided with the bulk cement storage tank 5, and the top of the sack cleaner 4 leads to
The purified gas recovery channel 6 is crossed to be connected with the clean coal gas pipe network 7.
The bulk cement storage tank 5 has cinder-discharging port 8, and the cinder-discharging port 8 is connected by ash conveying pipe 9 with the batch can 1；It is described
Ash conveying pipe 9 is provided with unloading valve 10 with the junction lower end of the cinder-discharging port 8.The purified gas recovery channel 6 is provided with blank-plate valve
11 and stop valve 12.The system for handling also includes diffusion valve 13, diffuses pipeline 14 and cyclone dust collectors 15, the cyclone dust removal
Device 15 diffuses pipeline 14 and is connected with the batch can 1 described in；The pipeline 14 that diffuses is provided with the diffusion valve 13.Described time
Butterfly valve 16 and gate valve 17 are equipped with closed tube road 3 and the purified gas recovery channel 6, the batch can 1 has sealing valve 18.
The above is only the preferred embodiment of the present invention, it is noted that it is right that above-mentioned preferred embodiment is not construed as
Limitation of the invention, protection scope of the present invention should be defined by claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of top gas handling process, it is characterised in that including：
After furnace top material tank for blast furnace charging, batch can lower sealing valve is closed, and the high pressure gas in the batch can carries out removal process or dissipates
Let off journey；The removal process includes：Opening presses coal gas recovery valve, the high pressure gas to enter cloth by the recovery pipe
Bag dust collector carries out dedusting and decompression, is pressed coal gas, bulk cement storage tank to carry out the coal gas dust that the sack cleaner is produced
Storage；Obtain the pressure coal gas and enter clean coal gas pipe network.
2. handling process according to claim 1, it is characterised in that the coal gas dust produced using the sack cleaner
It is transported in the batch can.
3. handling process according to claim 1, it is characterised in that the coal gas dust is through cinder-discharging port, unloading valve and ash pipeline
Road is transported in the batch can.
4. handling process according to claim 1, it is characterised in that the decompression process is specially：Open on sack cleaner
Blank-plate valve and stop valve on the purified gas recovery channel of portion's connection are depressurized.
5. handling process according to claim 1, it is characterised in that the bulk storage process includes：Open diffusion valve, the batch can
In high pressure gas enter air after diffusing pipeline to cyclone dust collectors dedusting.
6. handling process according to claim 1, it is characterised in that being automatically controlled by PLC is carried out removal process or dissipated
The switching of journey.
7. a kind of top gas system for handling, it is characterised in that including：Batch can, coal gas recovery valve, recovery pipe, cloth bag
Deduster, bulk cement storage tank, purified gas recovery channel, clean coal gas pipe network, the batch can are removed by the recovery pipe with the cloth bag
Dirt device is connected, and the sack cleaner lower end is provided with the bulk cement storage tank, and the sack cleaner top is returned by the purified gas
Closed tube road is connected with the clean coal gas pipe network.
8. handling process according to claim 7, it is characterised in that the bulk cement storage tank has cinder-discharging port, the cinder-discharging port leads to
Ash conveying pipe is crossed to be connected with the batch can；The ash conveying pipe is provided with unloading valve with cinder-discharging port junction lower end.
9. handling process according to claim 7, it is characterised in that the purified gas recovery channel is provided with blank-plate valve and cut-out
Valve.
10. handling process according to claim 7, it is characterised in that the system for handling also includes diffusion valve, diffuse pipeline and
Cyclone dust collectors, the cyclone dust collectors diffuse pipeline and are connected with the batch can described in；The pipeline that diffuses is provided with institute
State diffusion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611155975.7A CN106755671A (en) | 2016-12-14 | 2016-12-14 | A kind of top gas handling process and its system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611155975.7A CN106755671A (en) | 2016-12-14 | 2016-12-14 | A kind of top gas handling process and its system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106755671A true CN106755671A (en) | 2017-05-31 |
Family
ID=58889016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611155975.7A Pending CN106755671A (en) | 2016-12-14 | 2016-12-14 | A kind of top gas handling process and its system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106755671A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112143844A (en) * | 2020-11-05 | 2020-12-29 | 中冶京诚工程技术有限公司 | Blast furnace damping down diffusing gas purifying and recovering device |
| CN115109876A (en) * | 2022-06-13 | 2022-09-27 | 张家港宏昌钢板有限公司 | Blast furnace burden tank anti-blocking control method and blast furnace system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892336A (en) * | 2010-06-25 | 2010-11-24 | 鞍山亨通高炉设备工程技术有限公司 | Coal-gas recovering process and device of charging, equalizing and bleeding of blast furnace |
| CN102031321A (en) * | 2010-12-23 | 2011-04-27 | 中冶京诚工程技术有限公司 | Recovery method and recovery device for blast furnace top pressure-equalizing gas |
| CN102337364A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Device for recovering coal gas in equalizing and relieving process of furnace top of blast furnace |
-
2016
- 2016-12-14 CN CN201611155975.7A patent/CN106755671A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892336A (en) * | 2010-06-25 | 2010-11-24 | 鞍山亨通高炉设备工程技术有限公司 | Coal-gas recovering process and device of charging, equalizing and bleeding of blast furnace |
| CN102031321A (en) * | 2010-12-23 | 2011-04-27 | 中冶京诚工程技术有限公司 | Recovery method and recovery device for blast furnace top pressure-equalizing gas |
| CN102337364A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Device for recovering coal gas in equalizing and relieving process of furnace top of blast furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112143844A (en) * | 2020-11-05 | 2020-12-29 | 中冶京诚工程技术有限公司 | Blast furnace damping down diffusing gas purifying and recovering device |
| CN115109876A (en) * | 2022-06-13 | 2022-09-27 | 张家港宏昌钢板有限公司 | Blast furnace burden tank anti-blocking control method and blast furnace system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |