CN103148705B - Afterheat integral utilization system for sulfuric acid production process - Google Patents
Afterheat integral utilization system for sulfuric acid production process Download PDFInfo
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- CN103148705B CN103148705B CN201310117460.8A CN201310117460A CN103148705B CN 103148705 B CN103148705 B CN 103148705B CN 201310117460 A CN201310117460 A CN 201310117460A CN 103148705 B CN103148705 B CN 103148705B
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- heat exchanger
- slag
- waste heat
- furnace gas
- afterheat
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000002893 slag Substances 0.000 claims abstract description 47
- 238000010248 power generation Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000009835 boiling Methods 0.000 claims abstract description 9
- 239000002918 waste heat Substances 0.000 claims description 54
- 239000007789 gas Substances 0.000 claims description 34
- 238000010410 dusting Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to an afterheat integral utilization system for a sulfuric acid production process. The afterheat integral utilization system comprises deoxygenated water, a production shop, a next work procedure, a heat exchanger, furnace gas from a third heat exchanger, boiling furnace slag, a slag cooler, a slag discharge machine, an evaporator, furnace gas after primary dust removal, an afterheat power generating boiler and a steam turbine, wherein the deoxygenated water is connected to the heat exchanger, the heat exchanger is connected to the next work procedure, the furnace gas from the third heat exchanger is also connected to the heat exchanger, the heat exchanger is connected to the evaporator, the slag cooler and the afterheat power generating boiler through a high-temperature water supply pipeline, the boiling furnace slag is conveyed to the slag cooler, the slag cooler is simultaneously connected to the production shop and the slag discharge machine, the furnace gas after the primary dust removal is connected to the evaporator, the evaporator is simultaneously connected to the next work procedure and the production shop, the afterheat power generating boiler is connected to the steam turbine for driving the steam turbine to rotate, and the power generation is realized. The afterheat integral utilization system has the advantages that the integral structure is simple, the installation, the operation and the use are convenient, the stability is good, and the reliability is high. According to the characteristics of the sulfuric acid production process, the afterheat is utilized to the maximum degree, the energy is saved, and the consumption is reduced.
Description
Technical field
The present invention relates to the UTILIZATION OF VESIDUAL HEAT IN technology in contact acid production technology, for the feature of distinct device waste heat in sulfuric acid production process, consider the characteristic of furnace gas corrosion, carry out entirety for available waste heat in gas washing in SA production and consider, designed brand-new energy conserving system and carried out waste heat recovery.
Background technology
In contact acid production technology, the furnace gas containing sulfur dioxide that troilite generates after fluidizing reactor calcination enters boiler of power generation by waste heat, and after deduster rough dusting, temperature, about more than 300 ℃, then enters next procedure and continues to purify.In this technique, lower this operation that do not affect of flue-gas temperature that enters next procedure.In conversion process, the 3rd heat exchanger furnace gas export temperature is out generally 230 ℃, and this furnace gas, according to technological requirement, enters before absorption tower, needs only temperature and can guarantee more than 160 ℃, does not just affect operation below.This waste heat is not utilized at present.The slag temperature that fluidized bed furnace produces is about 900 ℃ of left and right, and this waste heat is not utilized at present.The feedwater of boiler of power generation by waste heat is generally that the water after oxygen-eliminating device deoxygenation is directly sent into boiler, and its enthalpy is lower, affects the steam production of boiler of power generation by waste heat.And some equipment of workshop also needs to utilize low-pressure steam to heat.For the problems referred to above in sulfuric acid production process, the present invention has designed utilization system, and by rational advancing equipment, optimization system, has realized and effectively utilized waste heat, saves the object of the energy.
Summary of the invention
In order to solve the problem of UTILIZATION OF VESIDUAL HEAT IN of sulfuric acid production process, the invention provides a kind of method of comprehensive utilization, according to each segment process feature, effectively utilize waste-heat working medium, low-pressure steam is provided, improves the gas production of boiler of power generation by waste heat, reach energy-saving and cost-reducing object.
Sulfuric acid production process waste heat comprehensive utilization system of the present invention, includes furnace gas, boiler of power generation by waste heat, workshop B and steam turbine after furnace gas out of deaerated water, workshop A, next procedure A, heat exchanger, the 3rd heat exchanger, boiling furnace slag, slag cooler, mucking machine, next procedure B, evaporimeter, rough dusting.Deaerated water is connected to heat exchanger, and heat exchanger is connected to next procedure A, and the 3rd heat exchanger furnace gas out is also connected to heat exchanger, and heat exchanger is connected to evaporimeter, slag cooler and boiler of power generation by waste heat by high temperature water-supply pipeline.Boiling furnace slag is transported to slag cooler, and slag cooler is connected to workshop A and mucking machine simultaneously.Furnace gas after rough dusting is connected to evaporimeter, and evaporimeter is connected to again next procedure B and workshop B simultaneously.Boiler of power generation by waste heat is connected to steam turbine, and driving steam turbine rotates, and realizes generating.Sulfuric acid production process waste heat comprehensive utilization system of the present invention, through boiler of power generation by waste heat cooling, the furnace gas after deduster rough dusting, because temperature is higher, is used for heating fumigators, makes it produce steam.Slag adopts slag cooler to produce steam.Heat by heat exchanger the water that oxygen-eliminating device is come with the 3rd heat exchanger furnace gas out, improve its enthalpy, become high temperature water-supply, be then divided into three tunnels through high temperature water-supply pipeline.One tunnel, as the feedwater of boiler of power generation by waste heat, because Enthalpy of Feed Water improves, has therefore increased the steam production of boiler of power generation by waste heat; The second tunnel, as the feedwater of evaporimeter, produces steam for workshop B; Third Road, as the feedwater of slag cooler, produces steam for workshop A.By heat exchanger heated feed water, become high temperature water-supply with the 3rd heat exchanger burner gas residual heat out, send into high temperature water-supply pipeline; Heat high temperature water-supply by evaporimeter with the burner gas residual heat after rough dusting, produce steam; Heat high temperature water-supply by slag cooler with the waste heat of slag, produce steam; The feedwater of evaporimeter, slag cooler, boiler of power generation by waste heat is all supplied with by high temperature water-supply pipeline.
Sulfuric acid production process waste heat comprehensive utilization system of the present invention, overall structure is simple, installation and easy for operation, good stability, reliability is high.Sulfuric acid production process waste heat comprehensive utilization system of the present invention, according to the feature of sulfuric acid production process, organically combines the waste heat of each several part in sulfuric acid production process and whole system, by the maximized waste heat, energy-saving and cost-reducing that utilizes of waste heat comprehensive utilization system.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of the waste heat comprehensive utilization system application in sulfuric acid production process of the present invention, and dotted portion is that carbonated drink is moved towards schematic diagram.Furnace gas 12-boiler of power generation by waste heat 13-workshop B 14-steam turbine after 1-deaerated water, 2-workshop, 3-next procedure A, 4-heat exchanger the 5-the three heat exchanger furnace gas 6-boiling furnace slag 7-slag cooler 8-mucking machine 9-next procedure B 10-evaporimeter 11-rough dusting out.
The specific embodiment
Referring now to accompanying drawing 1, be described as follows: sulfuric acid production process waste heat comprehensive utilization system of the present invention, includes furnace gas 11, boiler of power generation by waste heat 12, workshop B13 and steam turbine 14 after furnace gas 5 out of deaerated water 1, workshop A2, next procedure A3, heat exchanger 4, the 3rd heat exchanger, boiling furnace slag 6, slag cooler 7, mucking machine 8, next procedure B9, evaporimeter 10, rough dusting in conjunction with the embodiments.Deaerated water 1 is connected to heat exchanger 4, and heat exchanger 4 is connected to next procedure A3, and the 3rd heat exchanger furnace gas 5 out is also connected to heat exchanger 4, and heat exchanger 4 is connected to evaporimeter 10, slag cooler 7 and boiler of power generation by waste heat 12 by high temperature water-supply pipeline.Boiling furnace slag 6 is transported to slag cooler 7, and slag cooler 7 is connected to workshop A2 and mucking machine 8 simultaneously.Furnace gas 11 after rough dusting is connected to evaporimeter 10, and evaporimeter 10 is connected to again next procedure B9 and workshop B13 simultaneously.Boiler of power generation by waste heat 12 is connected to steam turbine 14, and driving steam turbine 14 rotates, and realizes generating.Sulfuric acid production process waste heat comprehensive utilization system of the present invention, lowers the temperature through boiler of power generation by waste heat 12, and the furnace gas 11 after deduster rough dusting, because temperature is higher, is used for heating fumigators 10, makes evaporimeter 10 produce steam.Slag adopts slag cooler 7 to produce steam.Heat by heat exchanger 4 water that oxygen-eliminating device is come with the 3rd heat exchanger furnace gas 5 out, improve its enthalpy, become high temperature water-supply, be then divided into three tunnels through high temperature water-supply pipeline.One tunnel, as the feedwater of boiler of power generation by waste heat 12, because Enthalpy of Feed Water improves, has therefore increased the steam production of boiler of power generation by waste heat 12; The second tunnel, as the feedwater of evaporimeter 10, produces steam for workshop B13; Third Road, as the feedwater of slag cooler 7, produces steam for workshop A2.By heat exchanger 4 heated feed waters, become high temperature water-supply with the 3rd heat exchanger furnace gas 5 waste heats out, send into high temperature water-supply pipeline; Heat high temperature water-supply by evaporimeter 10 with furnace gas 11 waste heats after rough dusting, produce steam; Heat high temperature water-supply by slag cooler 7 with the waste heat of slag, produce steam; The feedwater of evaporimeter 10, slag cooler 7, boiler of power generation by waste heat 12 is all supplied with by high temperature water-supply pipeline.With reference in accompanying drawing 1 take 100,000 sulfuric acid production systems as example, heat exchanger 4 is reduced to 160 ℃ by the 3rd heat exchanger furnace gas 5 out by 230 ℃ by heat exchange, enter next procedure A3, deaerated water (general 104 ℃) heating is brought up to 145 ℃ simultaneously, become high temperature water-supply.High temperature water-supply is divided into three tunnels through high temperature water-supply pipeline.One tunnel enters boiler of power generation by waste heat, because Enthalpy of Feed Water improves, has therefore increased the steam production of boiler of power generation by waste heat; The second tunnel enters evaporimeter, and the heating of 320 ℃ of furnace gases after rough dusting produces the saturated vapor of 1.0MPa for workshop, and furnace gas is down to 230 ℃ simultaneously, enters next procedure; Third Road enters slag cooler, and the saturated vapor that the slag of 900 ℃ is carried out to cooling generation 1.0 MPa is for workshop, and the slag after just cold enters mucking machine.Selecting of heat exchanger, evaporator material, consider sulfuric acid corrosion, cooled furnace gas temperature should be considered corrosion condition, also will guarantee the requirement of production technology.Sulfuric acid production process waste heat comprehensive utilization system of the present invention, overall structure is simple, installation and easy for operation, good stability, reliability is high.Sulfuric acid production process waste heat comprehensive utilization system of the present invention, according to the feature of sulfuric acid production process, organically combines the waste heat of each several part in sulfuric acid production process and whole system, by the maximized waste heat, energy-saving and cost-reducing that utilizes of waste heat comprehensive utilization system.
Claims (1)
1. sulfuric acid production process waste heat comprehensive utilization system, include deaerated water (1), workshop A(2), next procedure A(3), heat exchanger (4), the 3rd heat exchanger furnace gas (5) out, boiling furnace slag (6), slag cooler (7), mucking machine (8), next procedure B(9), evaporimeter (10), furnace gas (11) after rough dusting, boiler of power generation by waste heat (12), workshop B(13) and steam turbine (14), it is characterized in that deaerated water (1) is connected to heat exchanger (4), heat exchanger (4) is connected to next procedure A(3), the 3rd heat exchanger furnace gas (5) out is also connected to heat exchanger (4), heat exchanger (4) is connected to evaporimeter (10) by high temperature water-supply pipeline, slag cooler (7) and boiler of power generation by waste heat (12), boiling furnace slag (6) is transported to slag cooler (7), slag cooler (7) is connected to workshop A(2 simultaneously) and mucking machine (8), furnace gas (11) after rough dusting is connected to evaporimeter (10), evaporimeter (10) is connected to again next procedure B(9 simultaneously) and workshop B(13), boiler of power generation by waste heat (12) is connected to steam turbine (14), driving steam turbine (14) rotates, realize generating, with the 3rd heat exchanger furnace gas (5) waste heat out by heat exchanger (4) heated feed water, become high temperature water-supply, send into high temperature water-supply pipeline, by evaporimeter (10) heating high temperature water-supply, produce steam with the furnace gas after rough dusting (11) waste heat, by slag cooler (7) heating high temperature water-supply, produce steam with the waste heat of slag, the feedwater of evaporimeter (10), slag cooler (7), boiler of power generation by waste heat (12) is all supplied with by high temperature water-supply pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310117460.8A CN103148705B (en) | 2013-04-07 | 2013-04-07 | Afterheat integral utilization system for sulfuric acid production process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310117460.8A CN103148705B (en) | 2013-04-07 | 2013-04-07 | Afterheat integral utilization system for sulfuric acid production process |
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| CN103148705A CN103148705A (en) | 2013-06-12 |
| CN103148705B true CN103148705B (en) | 2014-06-11 |
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| CN109668131B (en) * | 2018-12-10 | 2020-01-17 | 山东京博众诚清洁能源有限公司 | System and process for preparing medium-pressure steam by utilizing waste heat in sulfuric acid production |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1791283A (en) * | 1982-08-12 | 1984-02-16 | Metallgesellschaft Aktiengesellschaft | Process of producing sulphuric acid |
| US5130112A (en) * | 1990-03-23 | 1992-07-14 | Monsanto Company | Method for recovering high grade process energy from a contact sulfuric acid process |
| CN2622558Y (en) * | 2003-06-18 | 2004-06-30 | 敖建军 | Heat-exchange system for coal-saving device |
| CN2780738Y (en) * | 2005-04-28 | 2006-05-17 | 南京圣诺热管有限公司 | Waste heat recovery system and device of sulfuric acid production |
| CN1986389A (en) * | 2005-12-22 | 2007-06-27 | 南化集团研究院 | Method of utilizing waste heat after boiling furnace in sulfuric acid production |
| CN201190585Y (en) * | 2008-03-14 | 2009-02-04 | 西安思安新能源有限公司 | Power installation by waste heat of sulfuric acid |
-
2013
- 2013-04-07 CN CN201310117460.8A patent/CN103148705B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1791283A (en) * | 1982-08-12 | 1984-02-16 | Metallgesellschaft Aktiengesellschaft | Process of producing sulphuric acid |
| US5130112A (en) * | 1990-03-23 | 1992-07-14 | Monsanto Company | Method for recovering high grade process energy from a contact sulfuric acid process |
| CN2622558Y (en) * | 2003-06-18 | 2004-06-30 | 敖建军 | Heat-exchange system for coal-saving device |
| CN2780738Y (en) * | 2005-04-28 | 2006-05-17 | 南京圣诺热管有限公司 | Waste heat recovery system and device of sulfuric acid production |
| CN1986389A (en) * | 2005-12-22 | 2007-06-27 | 南化集团研究院 | Method of utilizing waste heat after boiling furnace in sulfuric acid production |
| CN201190585Y (en) * | 2008-03-14 | 2009-02-04 | 西安思安新能源有限公司 | Power installation by waste heat of sulfuric acid |
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| CN103148705A (en) | 2013-06-12 |
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Effective date of registration: 20180607 Address after: 272000 Li Ying Street office, Rencheng District, Jining, Shandong province (Jining Jinyu warehousing Co., Ltd.) Patentee after: Jining China moral eco-friendly power source science and technology limited Company Address before: 272000 Jining special branch of Shandong special equipment inspection institute, No. 132 Wutai Gate Road, Rencheng District, Jining, Shandong Patentee before: Yang Qunfeng |
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