CN102721080A - Method for using coke oven gas on acid regeneration roasting furnace - Google Patents
Method for using coke oven gas on acid regeneration roasting furnace Download PDFInfo
- Publication number
- CN102721080A CN102721080A CN2012101942129A CN201210194212A CN102721080A CN 102721080 A CN102721080 A CN 102721080A CN 2012101942129 A CN2012101942129 A CN 2012101942129A CN 201210194212 A CN201210194212 A CN 201210194212A CN 102721080 A CN102721080 A CN 102721080A
- Authority
- CN
- China
- Prior art keywords
- acid regeneration
- coke oven
- oven gas
- fuel
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002253 acid Substances 0.000 title claims abstract description 33
- 230000008929 regeneration Effects 0.000 title claims abstract description 26
- 238000011069 regeneration method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000571 coke Substances 0.000 title abstract 5
- 239000000446 fuel Substances 0.000 claims abstract description 21
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 235000021110 pickles Nutrition 0.000 abstract description 7
- 150000002978 peroxides Chemical class 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000012797 qualification Methods 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 5
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229940067573 brown iron oxide Drugs 0.000 description 2
- 238000007131 hydrochloric acid regeneration reaction Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention provides a method for using coke oven gas on an acid regeneration roasting furnace, which adopts the coke oven gas as the fuel of the acid regeneration roasting furnace to carry out heating decomposition on waste pickle liquor; the air-fuel ratio of air and fuel is 1:5.2-5.5, and the air quantity is controlled at 280m3And h, controlling the furnace top temperature of the acid regeneration roasting furnace to be 400 +/-8 ℃. The invention can effectively solve the problem of unstable furnace top negative pressure caused by using the coke oven gas, realize the sufficient combustion of the peroxide amount required in the furnace, eliminate the problem of red smoke on the furnace top, reduce the fuel consumption, reduce the environmental pollution, ensure the qualification rate of acid regeneration products, and provide a feasible way for the application of the coke oven gas on the acid regeneration roasting furnace.
Description
Technical field
The invention belongs to the fuel field, relate in particular to a kind of method that adopts coke-stove gas to carry out the drag-out heating and decomposition as acid regeneration roaster fuel.
Background technology
The waste hydrochloric acid regeneration technology is along with the extensive employing of chlorohydric acid pickling grows up.At present, the waste hydrochloric acid regeneration method has only two kinds: a kind of is the evaporative crystallization method, and another kind is a pyrolysismethod.So-called pyrolysismethod is exactly to adopt the method for thermal decomposition pickle to produce regenerated acid and brown iron oxide.Pyrolysismethod is divided into " sulfuration bed method " and " spray roasting " again by its treatment process difference, and spray roasting promptly utilizes the acid regeneration roaster that abraum salt acid pickle is heated, and makes its thermal decomposition at high temperature become regenerated acid and brown iron oxide.
The main component of abraum salt acid pickle is FeCl
2The impurity of free HCl and siliceous mud thereof, abraum salt acid pickle carries out elevated temperature heat and decomposes in the acid regeneration roaster, and its chemical reaction is:
4?FeCl
2+4H
2O+O
2=2Fe
2?O
3+8HCl
In above-mentioned course of reaction, the control of the temperature of roaster is extremely important, because reaction temperature is with purity, activity and the chlorinty of direct oxidation iron powder.According to the calculating of the free energy and the enthalpy change of roaster internal reaction, if temperature is greater than 677 ℃ in the stove, reaction can be towards generating Fe
3O
4Direction carry out.Because directly temperature is difficult for realizing that the method that therefore generally adopts is the control top temperature in the control roaster, is about to top temperature and is controlled at 420-430 ℃, to guarantee reaction temperature suitable in the roaster.
Because the calorific capacity of mixed gas is lower, firepower a little less than, be convenient to control, the elevated temperature heat that is suitable for abraum salt acid pickle is decomposed, therefore, the domestic fuel that all adopts mixed gas as the acid regeneration roaster at present.Though the situation that adopts coke-stove gas to make fuel is arranged in recent years,, reaches 4200-4300kJ because the coke-stove gas calorific capacity is higher; Firepower is strong excessively, difficult control of temperature, and it is unstable to occur the furnace roof negative pressure in process of production; The situation that furnace roof emits red cigarette often appears; Both increased fuel consumption and production cost, again severe contamination surrounding environment and air, thereby influenced the application of coke-stove gas on the acid regeneration roaster.
Summary of the invention
The present invention aims to provide the method for using of a kind of coke-stove gas on the acid regeneration roaster; The problem that furnace roof negative pressure shakiness that causes when solving the use coke-stove gas and furnace roof emit red cigarette; Fully burn thereby reach peroxide amount required in the stove, for the application of coke-stove gas on the acid regeneration roaster provides a feasible approach.
For this reason, the solution that the present invention taked is:
The method for using of a kind of coke-stove gas on the acid regeneration roaster is characterized in that, adopts coke-stove gas as acid regeneration roaster fuel, carries out the drag-out heating and decomposition; The air-fuel ratio of air and fuel is 1:5.2-5.5, and air capacity is controlled at 270-280m
3/ h, acid regeneration roaster top temperature is controlled at 400 ± 8 ℃.
Beneficial effect of the present invention is:
The invention solves the unstable phenomenon of the furnace roof negative pressure that causes when using coke-stove gas; Realized that required peroxide amount is fully burnt in the stove, eliminated the problem that furnace roof emits red cigarette, reduced fuel consumption; Reduced environmental pollution; Improved operating environment, guaranteed the qualification rate of acid regeneration product, for the application of coke-stove gas on the acid regeneration roaster provides a practicable approach.
The specific embodiment
The method for using of coke-stove gas of the present invention on the acid regeneration roaster; Be to have the courage to bring forth new ideas on the one hand; Other wards off shortcut; Promptly adopt coke-stove gas as acid regeneration roaster fuel, carry out the drag-out heating and decomposition, for the acid regeneration roaster that lacks the mixed gas source of the gas has found an approach that solves fuel source.Solved on the other hand because the coke-stove gas calorific capacity is higher; Difficult control of temperature, it is unstable to occur the furnace roof negative pressure in process of production, furnace roof occurs and emits red smoke pollution problem of environment; Through reasonable setting and control air-fuel ratio top temperature; Thereby for abraum salt acid pickle in the roaster provides suitable reaction temperature, the air-fuel ratio that is about to air and fuel is set in 1:5.2-5.5, and air capacity is controlled at 280m
3/ h, acid regeneration roaster top temperature is controlled at 400 ± 8 ℃.Other all adopt common process.
Claims (1)
1. the method for using of a coke-stove gas on the acid regeneration roaster is characterized in that, adopts coke-stove gas as acid regeneration roaster fuel, carries out the drag-out heating and decomposition;
The air-fuel ratio of air and fuel is 1:5.2-5.5, and air capacity is controlled at 270-280m
3/ h, acid regeneration roaster top temperature is controlled at 400 ± 8 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101942129A CN102721080A (en) | 2012-06-13 | 2012-06-13 | Method for using coke oven gas on acid regeneration roasting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101942129A CN102721080A (en) | 2012-06-13 | 2012-06-13 | Method for using coke oven gas on acid regeneration roasting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102721080A true CN102721080A (en) | 2012-10-10 |
Family
ID=46946912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101942129A Pending CN102721080A (en) | 2012-06-13 | 2012-06-13 | Method for using coke oven gas on acid regeneration roasting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102721080A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880793Y (en) * | 2006-03-14 | 2007-03-21 | 鞍山瑞野实业有限公司 | Hydrochloric acid regenerating device |
| WO2008070885A2 (en) * | 2006-12-12 | 2008-06-19 | Gerhard Frithum | Method for increasing the specific surface of iron oxides in spray roasting plants |
| CN101654224A (en) * | 2008-08-20 | 2010-02-24 | 成都华西化工科技股份有限公司 | Method for regeneration of waste hydrochloric acid by oxygen enriched roasting |
| CN101870456A (en) * | 2010-06-12 | 2010-10-27 | 上海大学 | Industrial symbiosis processing method for recycling cold rolled waste acid |
-
2012
- 2012-06-13 CN CN2012101942129A patent/CN102721080A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880793Y (en) * | 2006-03-14 | 2007-03-21 | 鞍山瑞野实业有限公司 | Hydrochloric acid regenerating device |
| WO2008070885A2 (en) * | 2006-12-12 | 2008-06-19 | Gerhard Frithum | Method for increasing the specific surface of iron oxides in spray roasting plants |
| CN101654224A (en) * | 2008-08-20 | 2010-02-24 | 成都华西化工科技股份有限公司 | Method for regeneration of waste hydrochloric acid by oxygen enriched roasting |
| CN101870456A (en) * | 2010-06-12 | 2010-10-27 | 上海大学 | Industrial symbiosis processing method for recycling cold rolled waste acid |
Non-Patent Citations (1)
| Title |
|---|
| 李华彬、何安西、蔡斌、罗裕厚、陈东旭: "酸再生工艺参数对氧化铁粉质量的影响", 《钢铁钒钛》 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |