CN1935322A - Method for recovery sulfur dioxide from smelting smoke - Google Patents

Method for recovery sulfur dioxide from smelting smoke Download PDF

Info

Publication number
CN1935322A
CN1935322A CN 200610140861 CN200610140861A CN1935322A CN 1935322 A CN1935322 A CN 1935322A CN 200610140861 CN200610140861 CN 200610140861 CN 200610140861 A CN200610140861 A CN 200610140861A CN 1935322 A CN1935322 A CN 1935322A
Authority
CN
China
Prior art keywords
flue gas
concentration
smelting
sulfur dioxide
acid making
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.)
Pending
Application number
CN 200610140861
Other languages
Chinese (zh)
Inventor
刘玉强
刘世和
徐宾
冯拥军
王瑛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jinchuan Group Co Ltd
Original Assignee
Jinchuan Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jinchuan Group Co Ltd filed Critical Jinchuan Group Co Ltd
Priority to CN 200610140861 priority Critical patent/CN1935322A/en
Publication of CN1935322A publication Critical patent/CN1935322A/en
Pending legal-status Critical Current

Links

Abstract

The present invention relates to a method for recovering sulfur dioxide from smelting flue gas. It is characterized by that said method includes the following steps: making the flue gases with different concentrations which are produced by smelting system be connected by means of pipeline so as to form ring-shaped network; mixing gases before all the acid-making systems, after having been fully uniformly mixed the above-mentioned mixed flue gas can be fed into acid-making system to make acid.

Description

The method of sulfur dioxide recovery in a kind of flue gas during smelting
Technical field
The method of sulfur dioxide recovery in a kind of flue gas during smelting relates to a kind of method of flue gas during smelting distribution and relieving haperacidity.
Background technology
In smelting process, usually can produce a large amount of SO that contains 2Flue gas during smelting causes serious pollution to surrounding enviroment.Along with more and more stricter to environmental protection requirement, this just gives the environmental protection project of smelting---and utilize the metallurgical off-gas acid-making system to propose higher requirement, and the SO that different smelting bodies of heater is produced 2The concentration difference of flue gas.Usually utilize acid-making process to consume sulfur dioxide in the flue gas during smelting, the flue gas that will be fit to the relieving haperacidity concentration requirement is introduced acid making system, adopts the method for mending air to regulate relieving haperacidity concentration usually for the flue gas during smelting of high concentration, and SO in the flue gas 2Concentration is crossed when hanging down, and can not carry out relieving haperacidity, does not have recovery method preferably again, and the mode that can only adopt the high-altitude to efflux so not only pollutes environment, also causes the waste of high concentration acid making system equipment.
Summary of the invention
Order of the present invention is in order to overcome the deficiency that above-mentioned prior art exists, to provide a kind of flue gas during smelting that solves high concentration need mend SO in air conditioning relieving haperacidity concentration and the flue gas 2The method of sulfur dioxide recovery in the flue gas during smelting of the problem of environmental pollution that causes that the concentration high-altitude effluxes.
The objective of the invention is to be achieved through the following technical solutions.
The method of sulfur dioxide recovery in a kind of flue gas during smelting, the flue gas that it is characterized in that various concentration that smelting system is produced connects by pipeline, make it form looped network, before each acid making system, mix gas, enter acid making system relieving haperacidity after fully mixing.
The method of sulfur dioxide recovery in a kind of flue gas during smelting is characterized in that the phase mutual interference when adopting relay air blower to solve the different directions flue gas enters mixing chamber in system configuration; Fume emission pipeline place at each stove, kiln is provided with concentration monitor and electric control valve and it is chain, regulates at any time, to stablize the sulfur dioxide concentration of mixing chamber in the acid making system.
Method of the present invention will be smelted low, high concentration SO 2Flue gas is raw material mixing distribution, treat that its concentration enters acid making system after meeting acid-making process, so not only reasonably utilized low-concentration flue gas, efficiently solve because of low-concentration flue gas and efflux pollution on the environment, and replenish air need not for the high concentration flue gas, improved the utilization rate of acid-producing apparatus.
Process characteristic of the present invention is 1, each stove of smelting system, kiln flue gas is formed looped network, after fully mixing, and the concentration of balanced system acid system; 2, (concentration is<5%) is provided with the sulfur dioxide concentration self-checking device on low concentration discharged flue gas pipeline, to guarantee the concentration of sulfur dioxide in the mixing chamber; 3,, relay air blower is set according to resistance loss of pipeline and smelt the requirement of each stove, kiln to system pressure; 4, at the fume emission pipeline place of each stove, kiln concentration monitor is set, regulates at any time, to stablize sulfur dioxide concentration in the mixing chamber (acid making system).
Method of the present invention also can be regulated the production capacity of each acid making system at any time, effectively avoids certain acid making system fault to smelting the influence of producing.
The specific embodiment
The effective method that a kind of low concentration flue gas during smelting is administered, be that the low concentration that smelting system is produced is connected by pipeline with the flue gas of high concentration, make it form looped network, before each acid making system, mix gas, enter each acid making system relieving haperacidity after fully mixing, thereby administer low concentration SO 2Flue gas.Phase mutual interference when in system configuration, adopting relay air blower to solve the different directions flue gas to enter mixing chamber; Fume emission pipeline place at each stove, kiln is provided with concentration monitor and electric control valve and it is chain, regulates at any time, to stablize the sulfur dioxide concentration of mixing chamber in the acid making system.
Embodiment 1
Smelt stove to be provided with six, four acid making system technical process are example, and wherein the flue gas concentration of stove one is higher, can reach 30%, and the flue gas concentration of stove two, five is low, and particularly the gas of stove two is dense is 0.8%.
The distribution flow process is: flue gas, smelting body of heater five flue gases of smelting the flue gas of body of heater one, the flue gas of smelting body of heater two, smelting body of heater three partly enter a mixing chamber and mix gas.
Smelt body of heater six and smelt body of heater five partial fumes and after No. three mixing chambers mix gas, enter relieving haperacidity four systems;
Flue gas mixes the dense flue gas that distributes of gas that can reach according to the ability and the requirement of acid making system behind the gas at each mixing chamber.
In technical process, establish 2 relay air blowers, a flue gas relay that is used for 1# mixing chamber front furnace body one and body of heater two; 1 relay that is used for body of heater five, six flue gases in addition.
The automatic control system of high starting point is adopted in the production control of the inventive method, has guaranteed stable, accurate, the operation continuously of technology---in pipeline, be provided with SO 2Concentration analyzer and pressure transmitter can be with SO 2Adjustable gate interconnected lock mutually in concentration analyzer and the system, the arrangements for speed regulation that send device and stove with the pressure limit are interconnected lock mutually, and imports signal into the DCS system, regulates tolerance at any time, thereby reaches the purpose of control flue gas concentration.
Flue gas condition: copper synthetic furnace exhaust gas volumn 60,000 Nm 3/ h, flue gas concentration are 26%, 1,2# electric furnace flue gas amount respectively is 50,000 Nm 3/ h, gas is dense to be 0.9%, the total tolerance of 110T converter is 13Nm 3/ h, flue gas concentration are 6%.
If use conventional method, 1, the direct emptying of 2# electric furnace flue gas, copper synthetic furnace and converter gas are introduced acid making system, and the dense scope of design of the gas of acid making system is 8~10%, then need mend into air capacity to be (dense according to system gas is 10% calculating):
(60000+130000)×10%-(60000×26%+130000×6%)=44000Nm 3/h
So the sulfur content that directly effluxes is: 50000 * 0.09%=450Nm 3/ h
After selecting the inventive method for use, if can consume 1, low-concentration flue gas amount Q that the 2# electric furnace is produced:
(60000 * 26%+130000 * 6%+Q * 0.09%) ÷ (60000+130000+Q)=10% then
Can get Q=48351Nm 3/ h
The sulfur content that directly efflux this moment is: (50000-48351) * and 0.09%=14.8Nm 3/ h.
Adopt this invention back to reduce outer discharge capacity 435.2 Nm of sulphur as seen from the above 3/ h, the minimizing system is mended into air capacity 44000Nm 3/ h, but environmental pollution not only reduced, also saved the consumption of the each side such as the energy of acid making system to a great extent.
Embodiment 2
Other condition is with example 1;
Flue gas condition: 2 total tolerance 80,000 Nm of ore-smelting electric furnace 3/ h, SO 2Mean concentration is 1.3%; Copper synthetic furnace exhaust gas volumn 60,000 Nm 3/ h, SO 2Concentration about 25.59%; 3 copper converters (2 open 1 is equipped with), total tolerance 130,000 Nm 3/ h, SO 2Concentration about 6.42%; Copper self-heating stove, about 30,000 Nm of many kiln gas of Ka Er amount 3/ h, SO 2Concentration reaches as high as 6%; Flash kiln gas amount 80,000 Nm 3/ h, SO 2Concentration about 12%; Second phase 3 nickel converters (2 open 1 is equipped with). total tolerance 90,000 Nm 3/ h, SO 2Concentration about 5.20%.
Adopt this inventive method to carry out low, high concentration flue gas allotment relieving haperacidity:
1. the flue gas with ore-smelting electric furnace, copper synthetic furnace, copper converter, second phase 1 nickel converter mixes gas at a mixing chamber, and total tolerance is: 60000+80000+130000+45000=315000Nm 3/ h; Gas is dense to be: (60000 * 25.59%+80000 * 1.3%+130000 * 6.42%+45000 * 5.2%) ÷ 315000=8.5%
2.1 described in flue gas 18.5 ten thousand Nm wherein 3/ h flue gas is by relieving haperacidity three system consumption, and all the other enter No. two mixing chambers with next
Mix gas from copper self-heating stove, many kiln gas of Ka Er flue gas and enter the sulfuric acid two system, its tolerance is:
315000-185000+30000=160000Nm 3/h
Gas is dense to be: (130000 * 8.5%+30000 * 6%) ÷ 160000=8.0%
3, all the other flue gases consume tolerance by sulfuric acid four:
80000+45000=125000Nm 3/h
Gas is dense to be: (80000 * 12%+45000 * 5.2%) ÷ 125000=9.6%.

Claims (2)

1. the method for sulfur dioxide recovery in the flue gas during smelting, the flue gas that it is characterized in that various concentration that smelting system is produced connects by pipeline, make it form looped network, before each acid making system, mix gas, enter acid making system relieving haperacidity after fully mixing.
2. the method for sulfur dioxide recovery in a kind of flue gas during smelting according to claim 1 is characterized in that the phase mutual interference when adopting relay air blower to solve the different directions flue gas enters mixing chamber in system configuration; Fume emission pipeline place at each stove, kiln is provided with concentration monitor and electric control valve and it is chain, regulates at any time, to stablize the sulfur dioxide concentration of mixing chamber in the acid making system.
CN 200610140861 2006-10-13 2006-10-13 Method for recovery sulfur dioxide from smelting smoke Pending CN1935322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200610140861 CN1935322A (en) 2006-10-13 2006-10-13 Method for recovery sulfur dioxide from smelting smoke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200610140861 CN1935322A (en) 2006-10-13 2006-10-13 Method for recovery sulfur dioxide from smelting smoke

Publications (1)

Publication Number Publication Date
CN1935322A true CN1935322A (en) 2007-03-28

Family

ID=37953170

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200610140861 Pending CN1935322A (en) 2006-10-13 2006-10-13 Method for recovery sulfur dioxide from smelting smoke

Country Status (1)

Country Link
CN (1) CN1935322A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101275813B (en) * 2007-12-20 2010-05-12 金川集团有限公司 Method for processing acid mud in chimney smelting flue gas
CN101492154B (en) * 2009-02-12 2011-08-31 中国瑞林工程技术有限公司 Method for economically recycling sulphur dioxide from low-concentration or non-continuity flue gas to produce sulphuric acid
CN103521060A (en) * 2012-07-04 2014-01-22 辽宁大唐国际阜新煤制天然气有限责任公司 Method for desulfurization of sulfur recovery tail gas by using boiler flue gas ammonia method
CN103552993A (en) * 2013-11-14 2014-02-05 南京化工职业技术学院 DCS (distributed control system) controlled sulfur-based sulfuric acid producing device and production method
CN104132555A (en) * 2014-08-13 2014-11-05 铜陵有色金属集团股份有限公司金冠铜业分公司 Treatment system for low concentration SO2 flue gas of anode furnace
CN104147923A (en) * 2014-08-13 2014-11-19 铜陵有色金属集团股份有限公司金冠铜业分公司 Method for treating low-concentration SO2 flue gas produced by anode furnace
CN104477853A (en) * 2014-12-25 2015-04-01 湖南水口山有色金属集团有限公司 Pre-reforming and pre-absorption technology for production expansion of acid preparation from lead smelting gas
CN107128884A (en) * 2017-04-27 2017-09-05 北京矿冶研究总院 A kind of current stabilization state high concentration SO2Flue gas Sulphuric acid method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101275813B (en) * 2007-12-20 2010-05-12 金川集团有限公司 Method for processing acid mud in chimney smelting flue gas
CN101492154B (en) * 2009-02-12 2011-08-31 中国瑞林工程技术有限公司 Method for economically recycling sulphur dioxide from low-concentration or non-continuity flue gas to produce sulphuric acid
CN103521060A (en) * 2012-07-04 2014-01-22 辽宁大唐国际阜新煤制天然气有限责任公司 Method for desulfurization of sulfur recovery tail gas by using boiler flue gas ammonia method
CN103521060B (en) * 2012-07-04 2017-01-25 江苏新世纪江南环保股份有限公司 Method for desulfurization of sulfur recovery tail gas by using boiler flue gas ammonia method
CN103552993A (en) * 2013-11-14 2014-02-05 南京化工职业技术学院 DCS (distributed control system) controlled sulfur-based sulfuric acid producing device and production method
CN104132555A (en) * 2014-08-13 2014-11-05 铜陵有色金属集团股份有限公司金冠铜业分公司 Treatment system for low concentration SO2 flue gas of anode furnace
CN104147923A (en) * 2014-08-13 2014-11-19 铜陵有色金属集团股份有限公司金冠铜业分公司 Method for treating low-concentration SO2 flue gas produced by anode furnace
CN104477853A (en) * 2014-12-25 2015-04-01 湖南水口山有色金属集团有限公司 Pre-reforming and pre-absorption technology for production expansion of acid preparation from lead smelting gas
CN107128884A (en) * 2017-04-27 2017-09-05 北京矿冶研究总院 A kind of current stabilization state high concentration SO2Flue gas Sulphuric acid method

Similar Documents

Publication Publication Date Title
CN1935322A (en) Method for recovery sulfur dioxide from smelting smoke
CN102242254A (en) High sulfide pyrite pellet reinforced roasting consolidation technology
CN103542407A (en) Flying ash recirculating device and flying ash recirculating method for circulating fluidized bed boiler
CN104748566A (en) Method for iron mine sintering energy conservation and emission reduction
CN205473853U (en) Oxygenating apparatus before blast furnace axial fan machine
CN203148245U (en) System for treating flue gas of anode furnace
CN102003886B (en) Sintering machine flue gas separation conduction type desulfurizing device and method
CN205361063U (en) Low temperature SCR reactor deNOx systems that connects in parallel
CN204338013U (en) The circulating sulfuration bed process sintering flue gas desulfurization system preventing filter bag of dust collector from hardening
CN105540635B (en) Treatment device for semi-dry desulfurized fly ash
CN201885585U (en) Guiding type desulfurizer for smoke of sintering machine
CN202744581U (en) Gas recovery control system of converter
CN109603528A (en) A kind of denitrating system and its working method of multi-stage reacting device
CN204307526U (en) For the mixed cigarette thermoregulating system of boiler SCR denitration system
CN204601970U (en) A kind of device reduced discharging for the fuming furnace sulfur-containing tail gas degree of depth
CN204582943U (en) Flue gas desulphurization system
CN102888247B (en) Device and method for preventing oxygen-enriched gas accumulation in semiwater gas production process
CN204063997U (en) Anode furnace low concentration SO 2the treatment system of flue gas
CN105969933A (en) Device and method for controlling converter mouth micro-differential pressure in converter flue gas dry dedusting system
CN203816494U (en) Solution metering module for SNCR (selective non-catalytic reduction) flue gas denitration system
CN207324503U (en) A kind of column for smoke purification
CN210833105U (en) Sintering machine exhaust gas recycling system
CN212651631U (en) Flue gas purification system for diluting ammonia gas by desulfurized flue gas
CN209741060U (en) Fixed flue gas guiding device and coke oven system
CN209271187U (en) Denitration reaction device and smoke processing system

Legal Events

Date Code Title Description
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