CN102910592A - Quasi-isothermal venturi converter for heat energy substitution - Google Patents
Quasi-isothermal venturi converter for heat energy substitution Download PDFInfo
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- CN102910592A CN102910592A CN2012104244716A CN201210424471A CN102910592A CN 102910592 A CN102910592 A CN 102910592A CN 2012104244716 A CN2012104244716 A CN 2012104244716A CN 201210424471 A CN201210424471 A CN 201210424471A CN 102910592 A CN102910592 A CN 102910592A
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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
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- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The invention discloses a quasi-isothermal venturi converter for heat energy substitution. The high concentration conversion in sulfuric acid production is always an industry problem, the concentration of sulfur dioxide produced in a modern smelting furnace is as high as 30%-60%, the sulfur dioxide in such high concentration cannot enter converting and dry absorbing sections of the conventional sulfuric acid preparation system, the heat imbalance is caused, and the system cannot remove the heat easily, resulting in catalyst failure, high temperature deformation of equipment, excessive temperature of dry absorbing acid and too low single layer conversion rate. The problems affect the normal production of the system severely; the quasi-isothermal venturi converter for the heat energy substitution is equipment which is developed on the basis of a reaction equilibrium principle and is applicable to preparing the sulfuric acid from fume with high concentration of the sulfur dioxide; the heat can be removed from the converter continuously during the oxidation reaction of the sulfur dioxide, and the single layer conversion rate is increased by nearly 1.4 times, so that the converter facilitates the exothermic reaction towards the right continuously and has an effect of protecting the catalyst and the equipment. The quasi-isothermal venturi converter mainly comprises a housing, a gas distribution plate, a reaction tube bundle, a shell side jacket, a built-in air duct, a tube bundle supporting grid, a built-in venturi preheater and the like.
Description
Technical field
The present invention relates to gas washing in SA production and other heat recovery technology fields, particularly use SO in acid production with sulphur, metallurgical off-gas acid-making, pyrite-based sulfuric acid production and other
2The heat-exchange equipment of flue gas extracting sulfuric acid.
Background technology
Gas washing in SA production middle and high concentration transformation technology is an industry difficult problem always, along with the progress of smelting technology, and the development of oxygen-rich smelting technology, present many metallurgical furnace kilns have all improved the concentration of smelting exhaust sulfurous gas.What the sulfur dioxide concentration of modern smelting furnace production had can be up to 30%～60%, and so high sulfur dioxide concentration is difficult to enter conversion and the dry absorption section of conventional acid making system, and the individual layer transformation efficiency is excessively low.And can cause heat uneven, system is difficult to heat is well shifted out, and can cause catalyst failure, equipment high temperature deformation, do that to inhale the acid temperature too high, and these all have a strong impact on the normal production of system.
All there is the correlation technique that high density transforms in the offshore companies such as Otto Thailand, Meng Moke at present, all are to reach the purpose that transforms high density sulfurous gas by technological design.The technology of Otto Thailand is the circulating flue gas transformation technology, utilizes one section sulphur trioxide that transform to generate to return one section carrying out that suppresses one section conversion with a certain amount of, reduces one stage conversion, has also controlled one deck temperature out simultaneously.But the high-temperature blower that uses in this technology is expensive, and is fragile, and energy consumption is higher; The high density transformation technology of Meng Moke is a kind of pair of raw material method conversion process, namely adopt two kinds of different unstripped gass, high concentrations of gas and diluent air, allow all diluent airs all be added in the sub-fraction high-concentration fume, mixed gas reacts at one deck, the gas of remaining high concentrations of gas after one deck outlet and pre-inversion mixes, this technique can not surpass the temperature that catalyzer can bear, can obtain the concentration that a comparatively suitable conversion system is produced, but this technique can't be processed sulfur dioxide concentration and surpass 18% flue gas, and actual this kind technique is to have applied for patent by Frenchman Ugine Kuhlmann in nineteen thirty-five.Above two kinds of methods have certain limitation and are unfavorable for energy recovery.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of effective solution owing to entering the too high system thermal imbalance that causes of the sulfur dioxide concentration of convertor, system is difficult to heat is well shifted out, catalyst failure, equipment high temperature deformation, do the problems such as sour temperature is excessively high of inhaling, greatly improve the individual layer transformation efficiency, and recovery system heat energy well, the accurate isothermal Venturi heat energy displacement convertor of byproduct steam.
The present invention is for solving the problems of the technologies described above, provide following technical scheme: a kind of accurate isothermal Venturi heat energy displacement convertor, it is characterized in that comprising accurate isothermal transformation device, air preheater, described accurate isothermal transformation device comprises housing, arranging up and down in the housing, two tube sheets are separated into three cabins of upper, middle and lower, top, upper cabin offers gas approach, be provided with gas distribution grid under the gas approach, described middle deck is indoor to be provided with some heat-exchanging tube bundles, also fixed seal connection in the corresponding through hole of offering on the tube sheet is stretched at described heat-exchanging tube bundle two ends, be filled with the reaction catalyst in the described heat-exchanging tube bundle, the tube sheet below on top, lower cabin is provided with supportive grid, described housing center is provided with air preheater, air preheater is circular cylinder body, the upper end stretches into that middle deck is indoor to be sealed by upper tubesheet, it is fixing that the sealing of lower cabin is stretched in the lower end, described air preheater comprises housing, arranging up and down in the housing, two tube sheets are separated into three chambers of upper, middle and lower, be provided with some heat-exchanging tube bundles in the middle chamber, the heat-exchanging tube bundle two ends are stretched in the through hole that the lower tubesheet correspondence offers, fixed seal connection, described upper chamber is communicated with the middle cabin of accurate isothermal transformation device, lower chambers is provided with the air intlet pipeline, described middle chamber is communicated with lower cabin, be provided with the preheater chuck on the middle chamber shell, be provided with exhanst gas outlet on the preheater chuck, be provided with external jacket on the described middle deck chamber enclosure, be provided with the airout pipe on the external jacket.
As preferably, offer air-guiding hole on the air preheater upper chamber shell.
As preferentially, offer air-guiding hole on the air preheater middle chamber shell.
For better explaining technical scheme of the present invention, below introduce in detail principle of work of the present invention: the flue gas that contains sulfurous gas that comes from the outside about 420 ℃ enters from accurate isothermal Venturi heat energy displacement convertor gas approach, after by gas distribution grid flue gas evenly being distributed, enter the indoor heat-exchanging tube bundle of accurate isothermal transformation device middle deck, filled reaction catalyst (catalyzer) in the heat-exchanging tube bundle, after the flue gas that contains sulfurous gas enters the heat-exchanging tube bundle reaction, supportive grid by the lower tubesheet below enters lower cabin, then enter the air preheater middle chamber, enter at last the preheater chuck, send next equipment (two sections convertor or interchanger) that enters by the exhanst gas outlet on the preheater chuck, the flue gas that contains sulfurous gas utilizes the air of percolation between pipe to continue cooling in the process by the indoor heat-exchanging tube bundle of accurate isothermal transformation device middle deck, the heat that will produce in reaction tubes continues to shift out, the air that is used for moving the heat drop temperature enters from the air intlet pipeline on the air preheater lower chambers, after first being entered the reaction flue gas heating of air preheater middle chamber behind the inflow middle chamber, enter upper chamber, because upper chamber is communicated with middle cabin, air after the preheating enters between the pipe of heat-exchanging tube bundle in cabin, high-temperature flue gas lowered the temperature move heat, flow at last external jacket, discharged by the airout pipe, be sent to the operation of byproduct steam.
Beneficial effect of the present invention: the present invention is at high density SO
2Under the condition of relieving haperacidity, the transformation efficiency of one deck is no better than three layers of transformation efficiency sum of tradition, make simple, greatly reduce cost, and occupation area of equipment is little, saves the space, by utilizing air heat-exchange, the recovery system heat has also effectively prevented the corrosion of heat transfer tube to greatest extent, and range of application is comparatively extensive.
Description of drawings
Fig. 1 is semisectional view of the present invention.
Embodiment
A kind of accurate isothermal Venturi heat energy displacement convertor, comprise accurate isothermal transformation device 001, air preheater 002, described accurate isothermal transformation device 001 comprises housing, up and down two tube sheets (011 are set in the housing, 012) is separated into three cabins (013 of upper, middle and lower, 014,015), 013 top, upper cabin offers gas approach 016, be provided with gas distribution grid 017 under the gas approach 016, be provided with some heat-exchanging tube bundles 018 in the described middle cabin 014, tube sheet (011 is stretched at described heat-exchanging tube bundle 018 two ends, 012) also fixed seal connection in the through hole that correspondence is offered on, be filled with the reaction catalyst in the described heat-exchanging tube bundle 018, tube sheet 012 below on 015 top, lower cabin is provided with supportive grid 004, described housing center is provided with air preheater 002, air preheater 002 is circular cylinder body, the upper end is stretched in the middle cabin 014 by upper tubesheet 011 sealing, it is fixing that 015 sealing of lower cabin is stretched in the lower end, described air preheater 002 comprises housing, up and down two tube sheets (021 are set in the housing, 022) is separated into three chambers (023 of upper, middle and lower, 024,025), be provided with some heat-exchanging tube bundles 026 in the middle chamber 024, lower tubesheet (021 is stretched at heat-exchanging tube bundle 026 two ends, 022) in the through hole that correspondence is offered, fixed seal connection, described upper chamber 023 is communicated with the middle cabin 014 of accurate isothermal transformation device 002, lower chambers 025 is provided with air intlet pipeline 027, described middle chamber 024 is communicated with lower cabin 015, be provided with preheater chuck 005 on middle chamber 024 shell, be provided with exhanst gas outlet 051 on the preheater chuck 005, be provided with external jacket 006 on 014 shell of described middle cabin, be provided with airout pipe 061 on the external jacket 006, as preferably, offer air-guiding hole 231 on air preheater 002 upper chamber 023 shell, as preferably, offer air-guiding hole 241 on air preheater 002 middle chamber 024 shell.
Claims (3)
1. accurate isothermal Venturi heat energy displacement convertor, it is characterized in that comprising accurate isothermal transformation device, air preheater, described accurate isothermal transformation device comprises housing, arranging up and down in the housing, two tube sheets are separated into three cabins of upper, middle and lower, top, upper cabin offers gas approach, be provided with gas distribution grid under the gas approach, described middle deck is indoor to be provided with some heat-exchanging tube bundles, also fixed seal connection in the corresponding through hole of offering on the tube sheet is stretched at described heat-exchanging tube bundle two ends, be filled with the reaction catalyst in the described heat-exchanging tube bundle, the tube sheet below on top, lower cabin is provided with supportive grid, described housing center is provided with air preheater, air preheater is circular cylinder body, the upper end stretches into that middle deck is indoor to be sealed by upper tubesheet, it is fixing that the sealing of lower cabin is stretched in the lower end, described air preheater comprises housing, arranging up and down in the housing, two tube sheets are separated into three chambers of upper, middle and lower, be provided with some heat-exchanging tube bundles in the middle chamber, the heat-exchanging tube bundle two ends are stretched in the through hole that the lower tubesheet correspondence offers, fixed seal connection, described upper chamber is communicated with the middle cabin of accurate isothermal transformation device, lower chambers is provided with the air intlet pipeline, described middle chamber is communicated with lower cabin, be provided with the preheater chuck on the middle chamber shell, be provided with exhanst gas outlet on the preheater chuck, be provided with external jacket on the described middle deck chamber enclosure, be provided with the airout pipe on the external jacket.
2. a kind of accurate isothermal Venturi heat energy displacement convertor according to claim 1 is characterized in that offering air-guiding hole on the air preheater upper chamber shell.
3. a kind of accurate isothermal Venturi heat energy displacement convertor according to claim 1 is characterized in that offering air-guiding hole on the air preheater middle chamber shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210424471.6A CN102910592B (en) | 2012-10-31 | 2012-10-31 | Quasi-isothermal venturi converter for heat energy substitution |
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| CN201210424471.6A CN102910592B (en) | 2012-10-31 | 2012-10-31 | Quasi-isothermal venturi converter for heat energy substitution |
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| CN102910592A true CN102910592A (en) | 2013-02-06 |
| CN102910592B CN102910592B (en) | 2014-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113401871A (en) * | 2021-07-06 | 2021-09-17 | 中石化宁波工程有限公司 | Tubular sectional controllable semi-isothermal converter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128092B (en) * | 2014-08-20 | 2016-03-09 | 德州奥深节能环保技术有限公司 | Integral energy-saving catalyst reaction device |
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| CN2280087Y (en) * | 1996-12-20 | 1998-04-29 | 南京化工大学 | Reactor for conversion sulfur oxides by use of heat pipe heat-exchange |
| CN1268484A (en) * | 2000-04-06 | 2000-10-04 | 应燮堂 | Improvement of high-concentration sulfur dioxide three-conversion three-absorption acid-making process |
| CN2769807Y (en) * | 2005-01-27 | 2006-04-05 | 扬州庆松化工设备有限公司 | Orifice corrugated pipe heat exchanger |
| CN201361530Y (en) * | 2009-01-06 | 2009-12-16 | 中国瑞林工程技术有限公司 | Flue gas recirculation loop of high-concentration sulfur dioxide reforming device |
| WO2011137506A1 (en) * | 2010-05-06 | 2011-11-10 | Chemetics Inc. | Shell and tube heat exchangers |
| CN102303848A (en) * | 2011-04-02 | 2012-01-04 | 中冶焦耐(大连)工程技术有限公司 | Method for exchanging heat between high-temperature process gas and low-temperature process gas in acid production process |
| CN102336397A (en) * | 2011-09-27 | 2012-02-01 | 宜兴市化工成套设备有限公司 | Continuous heat transfer sulfur dioxide converter |
| CN202880883U (en) * | 2012-10-31 | 2013-04-17 | 宜兴市化工成套设备有限公司 | Quasi isothermal venturi heat energy replacement converter |
-
2012
- 2012-10-31 CN CN201210424471.6A patent/CN102910592B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2280087Y (en) * | 1996-12-20 | 1998-04-29 | 南京化工大学 | Reactor for conversion sulfur oxides by use of heat pipe heat-exchange |
| CN1268484A (en) * | 2000-04-06 | 2000-10-04 | 应燮堂 | Improvement of high-concentration sulfur dioxide three-conversion three-absorption acid-making process |
| CN2769807Y (en) * | 2005-01-27 | 2006-04-05 | 扬州庆松化工设备有限公司 | Orifice corrugated pipe heat exchanger |
| CN201361530Y (en) * | 2009-01-06 | 2009-12-16 | 中国瑞林工程技术有限公司 | Flue gas recirculation loop of high-concentration sulfur dioxide reforming device |
| WO2011137506A1 (en) * | 2010-05-06 | 2011-11-10 | Chemetics Inc. | Shell and tube heat exchangers |
| CN102303848A (en) * | 2011-04-02 | 2012-01-04 | 中冶焦耐(大连)工程技术有限公司 | Method for exchanging heat between high-temperature process gas and low-temperature process gas in acid production process |
| CN102336397A (en) * | 2011-09-27 | 2012-02-01 | 宜兴市化工成套设备有限公司 | Continuous heat transfer sulfur dioxide converter |
| CN202880883U (en) * | 2012-10-31 | 2013-04-17 | 宜兴市化工成套设备有限公司 | Quasi isothermal venturi heat energy replacement converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113401871A (en) * | 2021-07-06 | 2021-09-17 | 中石化宁波工程有限公司 | Tubular sectional controllable semi-isothermal converter |
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| CN102910592B (en) | 2014-04-09 |
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Owner name: JINCHUAN GROUP CO., LTD. Effective date: 20130913 |
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Inventor after: Song Xiaoliang Inventor after: Liu Yuqiang Inventor after: Li Shuquan Inventor after: Chang Quanzhong Inventor after: Zhu Qibao Inventor after: Su Wenguo Inventor after: Sun Zhizhong Inventor after: Dai Yunjun Inventor before: Song Xiaoliang Inventor before: Li Shuquan Inventor before: Chang Quanzhong |
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Free format text: CORRECT: INVENTOR; FROM: SONG XIAOLIANG LI SHUQUAN CHANG QUANZHONG TO: SONG XIAOLIANG LIU YUQIANG LI SHUQUAN CHANG QUANZHONG ZHU QIBAO SU WENGUO SUN ZHIZHONG DAI YUNJUN |
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Effective date of registration: 20130913 Address after: Huankeyuan garden 214205 Yixing Road, Jiangsu city of Wuxi province No. 105 Applicant after: Yixing City Chemical Industry Complete Equipment Co., Ltd. Applicant after: Jinchuan Group Co., Ltd. Address before: Huankeyuan garden 214205 Yixing Road, Jiangsu city of Wuxi province No. 105 Applicant before: Yixing City Chemical Industry Complete Equipment Co., Ltd. |
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Owner name: SHUANGDUN ENVIRONMENTAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: YIXING CHEMICAL INDUSTRY COMPLETE-SET EQUIPMENT CO., LTD. |
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Address after: Huankeyuan garden 214205 Yixing Road, Jiangsu city of Wuxi province No. 105 Patentee after: SHUANGDUN ENVIRONMENT TECHNOLOGY CO., LTD. Patentee after: Jinchuan Group Co., Ltd. Address before: Huankeyuan garden 214205 Yixing Road, Jiangsu city of Wuxi province No. 105 Patentee before: Yixing City Chemical Industry Complete Equipment Co., Ltd. Patentee before: Jinchuan Group Co., Ltd. |