CN102140562A - Dry deduster for blast furnace gas - Google Patents
Dry deduster for blast furnace gas Download PDFInfo
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- CN102140562A CN102140562A CN 201110049123 CN201110049123A CN102140562A CN 102140562 A CN102140562 A CN 102140562A CN 201110049123 CN201110049123 CN 201110049123 CN 201110049123 A CN201110049123 A CN 201110049123A CN 102140562 A CN102140562 A CN 102140562A
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- blast furnace
- dust
- dedusting
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- Blast Furnaces (AREA)
Abstract
The invention discloses a dry deduster for blast furnace gas, which is characterized in that: a dedusting cloth bag is arranged in a dedusting tank; the lower part of the dedusting tank is provided with a blast furnace raw gas communicating branch pipe and a cinder valve; the upper part of the dedusting tank is provided with a pure gas branch pipe for outputting pure gas; and the pure gas of the pure gas branch pipe is communicated with a pure gas header pipe through a pressure regulating valve bank or a top gas pressure recovery turbine (TRT) system. The dry deduster is provided with a gas pressure-releasing pipeline; the inlet end of the gas pressure-releasing pipeline is communicated with the upper part of the dedusting tank; a valve bank for controlling the on/off of the gas pressure-releasing pipeline is arranged on the gas pressure-releasing pipeline; and the outlet end of the gas pressure-releasing pipeline can be connected to the pure gas header pipe and also can be communicated with the atmosphere. The dry dedustor has the advantages that: energy is saved, the maintenance amount is small, the dedusting effect is improved, capital investment is saved, newly increased energy consumption and pollution are absent, emission is reduced, the operating cost of blast furnace bag filter dedusting is safely and effectively reduced, and the dry deduster can be mainly applied to blast furnace bag filter dedusting.
Description
Technical field
The present invention relates to a kind of blast furnace gas nonaqueous dust cleaner in the use of metallurgical environmental protection dedusting technology field.
Background technology
Have blast furnace gas dry outside filter method bag-type dust deashing technology now, adopt the technology of nitrogen or clean gas pressurized impulse reverse-blow deashing, technical having the following disadvantages more:
1, consumes energy.The nitrogen blowback need consume nitrogen, and purified gas pressurization blowback needs consumed power.
2, maintenance capacity is big.Nitrogen or clean gas pressurized impulse reverse-blow deashing technology all need dispose the relevant device facility, need running check and maintenance.
3, influence dust removing effects.The gas condensed water that the blowback gas-holder accumulates can spirt when carrying out blowback casing, form cloth bag and harden, influence dust removing effects and reduction cloth bag work-ing life.
Summary of the invention
Purpose of the present invention just provides a kind of purified gas after utilizing bf bag filter to filter and as source of the gas cloth bag is carried out the adverse current reverse gas cleaning.During reverse gas cleaning,,, utilize the high pressure purified gas adverse current in the native system to return casing again, reach the requirement of blowback of cloth bag body and deashing earlier to the release of fly-ash separator casing by valve operation.
Solution of the present invention is such: dust-removal cloth-bag is arranged in the dust-removing box, the blast furnace raw gas arm and the unloading valve of connection arranged at the dust-removing box bottom, the purified gas arm of sending purified gas is arranged at the top of dust-removing box, the purified gas of purified gas arm is through relief valve group or TRT coal gas top pressure power generation system connectivity purified gas house steward, the present invention is provided with coal gas release pipeline, the inlet end of coal gas release pipeline is the top that is communicated with dust-removing box, and gas stop valve, blank-plate valve, the gas bleeding valve of control coal gas release pipeline break-make is installed on coal gas release pipeline.
The outlet side of described coal gas release pipeline can be connected to gas main, also can be to atmosphere emptying.
Advantage of the present invention is:
(1) save energy.The purified gas blowback does not need to consume nitrogen, and blowback is all reclaimed with purified gas, has saved the energy;
(2) maintenance capacity is few.Purified gas blowback system installations and facilities are few, and failure rate is low, and the maintenance work amount is few, and the operation ratio of casing is improved.
(3) improve dust removing effects.The purified gas blowback does not need to be provided with blowback comb and nozzle, and the phenomenon of cloth bag can not take place to damage because of its installation error; Do not have the situation that water of condensation causes cloth bag to harden.Thereby improved cloth bag work-ing life, improved dust removing effects.
(4) save initial cost.If newly-built gas dry-dedusting system then need not to be provided with nitrogen blowback or coal gas pressurization reverse gas cleaning system device facility, saved the fund input in early stage.
Description of drawings
Accompanying drawing is used to illustrate embodiments of the invention.
Accompanying drawing 1 is the structural representation of conventional dry fly-ash separator.
Accompanying drawing 2 is structural representations of the present invention.
Embodiment
Each parts detail is as follows in the accompanying drawing: 1, raw gas arm, 2, the A sealed butterfly valve, 3, the C blank-plate valve, 4, dust-removal cloth-bag, 5, the raw gas house steward, 6, unloading valve, 9, dust-removing box, 10, the D blank-plate valve, 11, the B sealed butterfly valve, 12, purified gas arm, 13, the purified gas effuser, 14, the relief valve group, 15, TRT coal gas top pressure power generation system, 16, the purified gas house steward, 17, gas stop valve, 18, blank-plate valve, 19, coal gas release pipeline, 20, gas bleeding valve.
In the dust-removing box 9 of the present invention dust-removal cloth-bag 4 is arranged, the blast furnace raw gas arm 1 and the unloading valve 6 of connection arranged at dust-removing box 9 bottoms, the purified gas arm 12 of sending purified gas is arranged at the top of dust-removing box 9, the purified gas of purified gas arm 12 is through relief valve group or TRT coal gas top pressure power generation system connectivity purified gas house steward 16, also has coal gas release pipeline 19, the inlet end of coal gas release pipeline 19 is the top air-purifying chambers that are communicated with dust-removing box 9, and gas stop valve 17, blank-plate valve 18, the gas bleeding valve 20 of control coal gas release pipeline break-make is installed on coal gas release pipeline 19.
Described coal gas release pipeline 19 outlet sides can be to be connected to purified gas house steward 16, also can be by 20 pairs of atmosphere emptying of gas bleeding valve.
In the present embodiment, described coal gas release pipeline 19 is the top air-purifying chambers that are connected dust-removing box 9; The outlet side of described coal gas release pipeline 19 is connected to purified gas house steward 16, is connected to purified gas house steward 16 and can solves the pollution problem that atmosphere emptying discharging is brought; The casing release can directly be carried out to atmosphere emptying by gas bleeding valve 20 in described coal gas release pipeline 19 outlet sides.The valve group of described control coal gas release pipeline break-make is gas stop valve 17, blank-plate valve 18 and gas bleeding valve 20.
Operating process of the present invention is: see accompanying drawing 2, close A sealed butterfly valve 2 and B sealed butterfly valve 11 that dust-removing box 9 coal gas are imported and exported, stop casing cloth bag filtration, gas stop valve 17 and blank-plate valve 18 on the release pipeline 19 turn on the gas-fire, carry out the casing release, close gas stop valve 17 then, open B sealed butterfly valve 11 again, a large amount of purified gas return dust-removing box 9 from purified gas arm 12 adverse currents, dust-removing box 9 internal gas pressures can sharply raise at short notice, because the drag effect of dust-removal cloth-bag 4, the pressure of air-purifying chamber is prior to the instantaneous rising of dirt air chamber in the dust-removing box 9, thereby dust-removal cloth-bag 4 is expanded tremble ash, the cloth bag superficial dust falls under gravity into flue-dust retainer, realizes the purified gas reverse gas cleaning.The casing release also can be diffused valve 20 and be finished by turning on the gas-fire.
Claims (3)
1. blast furnace gas nonaqueous dust cleaner, dust-removal cloth-bag (4) is arranged in the dust-removing box (9), the blast furnace raw gas arm (1) and the unloading valve (6) of connection arranged at dust-removing box (9) bottom, the purified gas arm (12) of sending purified gas is arranged at the top of dust-removing box (9), the purified gas of purified gas arm (12) is delivered to purified gas house steward (16) after relief valve group (14) or TRT coal gas top pressure power generation system (15) step-down, it is characterized in that having coal gas release pipeline (19), the inlet end of coal gas release pipeline (19) is the top that is communicated with dust-removing box (9), and the gas stop valve (17) of control coal gas release pipeline break-make is installed on coal gas release pipeline (19), blank-plate valve (18), gas bleeding valve (20).
2. blast furnace gas nonaqueous dust cleaner according to claim 1 is characterized in that the outlet side of described coal gas release pipeline (19) is connected to purified gas house steward (16).
3. blast furnace gas nonaqueous dust cleaner according to claim 1 is characterized in that gas bleeding valve (20) is passed through to atmosphere emptying in the outlet side of described coal gas release pipeline (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110049123 CN102140562A (en) | 2011-03-02 | 2011-03-02 | Dry deduster for blast furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110049123 CN102140562A (en) | 2011-03-02 | 2011-03-02 | Dry deduster for blast furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102140562A true CN102140562A (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110049123 Pending CN102140562A (en) | 2011-03-02 | 2011-03-02 | Dry deduster for blast furnace gas |
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| CN (1) | CN102140562A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745755A (en) * | 2015-04-29 | 2015-07-01 | 山东钢铁股份有限公司 | Online dust cleaning method for blast furnace gas dry dust removing system |
| CN107541576A (en) * | 2017-10-23 | 2018-01-05 | 成都瑞柯林工程技术有限公司 | Blast furnace roof feeding pressure box release exhaust gas purification recovery system |
| CN110016530A (en) * | 2019-05-06 | 2019-07-16 | 中冶赛迪工程技术股份有限公司 | A kind of blast furnace gas all dry purification system and its process flow |
| CN110205425A (en) * | 2019-03-29 | 2019-09-06 | 山东钢铁股份有限公司 | Blast furnace gas dry dusting cloth bag blowback system and back blowing process |
| CN110699505A (en) * | 2019-11-14 | 2020-01-17 | 光阳工程技术有限公司 | Blast furnace gas dry dedusting clean gas blowback ash removal system |
| CN112626300A (en) * | 2020-12-15 | 2021-04-09 | 广西钢铁集团有限公司 | Double-mode back-blowing ash removal device for blast furnace dry-method dust removal cloth bag |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105117A (en) * | 1985-06-25 | 1986-11-05 | 济南铁厂 | The reverse blowing with energy accumulator equipment and the technology of blast furnace gas cloth bag dedusting |
| CN2828056Y (en) * | 2005-10-26 | 2006-10-18 | 首钢总公司 | Bas cloth bag dust removing system for blast furnace |
| CN201969442U (en) * | 2011-03-02 | 2011-09-14 | 柳州钢铁股份有限公司 | Dry-method dust remover for blast-furnace gas |
-
2011
- 2011-03-02 CN CN 201110049123 patent/CN102140562A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105117A (en) * | 1985-06-25 | 1986-11-05 | 济南铁厂 | The reverse blowing with energy accumulator equipment and the technology of blast furnace gas cloth bag dedusting |
| CN2828056Y (en) * | 2005-10-26 | 2006-10-18 | 首钢总公司 | Bas cloth bag dust removing system for blast furnace |
| CN201969442U (en) * | 2011-03-02 | 2011-09-14 | 柳州钢铁股份有限公司 | Dry-method dust remover for blast-furnace gas |
Non-Patent Citations (1)
| Title |
|---|
| 《鞍钢技术》 20110228 赵泽文等 柳钢高炉净煤气反吹清灰工艺改造实践 52-55 1-3 , 第1期 2 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745755A (en) * | 2015-04-29 | 2015-07-01 | 山东钢铁股份有限公司 | Online dust cleaning method for blast furnace gas dry dust removing system |
| CN107541576A (en) * | 2017-10-23 | 2018-01-05 | 成都瑞柯林工程技术有限公司 | Blast furnace roof feeding pressure box release exhaust gas purification recovery system |
| CN110205425A (en) * | 2019-03-29 | 2019-09-06 | 山东钢铁股份有限公司 | Blast furnace gas dry dusting cloth bag blowback system and back blowing process |
| CN110016530A (en) * | 2019-05-06 | 2019-07-16 | 中冶赛迪工程技术股份有限公司 | A kind of blast furnace gas all dry purification system and its process flow |
| CN110016530B (en) * | 2019-05-06 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Blast furnace gas full-dry purification system and process flow thereof |
| CN110699505A (en) * | 2019-11-14 | 2020-01-17 | 光阳工程技术有限公司 | Blast furnace gas dry dedusting clean gas blowback ash removal system |
| CN112626300A (en) * | 2020-12-15 | 2021-04-09 | 广西钢铁集团有限公司 | Double-mode back-blowing ash removal device for blast furnace dry-method dust removal cloth bag |
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Application publication date: 20110803 |