CN205079626U - Flue gas exhaust -heat boiler device of large -scale sulphuric acid production line - Google Patents
Flue gas exhaust -heat boiler device of large -scale sulphuric acid production line Download PDFInfo
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- CN205079626U CN205079626U CN201520814108.4U CN201520814108U CN205079626U CN 205079626 U CN205079626 U CN 205079626U CN 201520814108 U CN201520814108 U CN 201520814108U CN 205079626 U CN205079626 U CN 205079626U
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- Prior art keywords
- temperature
- flue gas
- boiler
- low
- economizer
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 239000003546 flue gas Substances 0.000 title claims abstract description 83
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 235000011149 sulphuric acid Nutrition 0.000 title abstract 5
- 239000001117 sulphuric acid Substances 0.000 title abstract 5
- 239000000779 smoke Substances 0.000 claims description 21
- 239000002699 waste material Substances 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 10
- 206010037660 Pyrexia Diseases 0.000 abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Classifications
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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
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a flue gas exhaust -heat boiler device (b) of (b) type sulphuric acid production line greatly, this flue gas exhaust -heat boiler device includes the high temperature boiler section, low temperature boiler section, medium temperature flue gas connecting pipe case, high -temperature economizer, be equipped with high temperature flue gas pipeline at high temperature boiler section flue gas inlet end, low temperature flue gas pipeline in being equipped with between the exit end of low temperature boiler section and high -temperature economizer, be equipped with low temperature flue gas pipeline at the high -temperature economizer exit end, low temperature flue gas branch line in being equipped with on well low temperature flue gas pipeline, establish the valve at a well low temperature flue gas on -line, be equipped with low temperature boiler feed water pipeline on high -temperature economizer, be equipped with the high temperature boiler water -supply line between high -temperature economizer and steam pocket, the high temperature boiler section, low temperature boiler section, medium temperature flue gas connecting pipe case, high -temperature economizer and steam pocket are according to the whole flue gas exhaust -heat boiler device that connects into of above -mentioned pipeline. The utility model discloses reduce large -scale sulphuric acid production line exhaust -heat boiler's manufacturing and mounting cost, improve sulphuric acid production stability, reduce sulphuric acid production comprehensive cost.
Description
Technical field
The utility model relates to UTILIZATION OF VESIDUAL HEAT IN, particularly a kind of smoke and waste steam boiler device of Large sulfuric acid production line.
Background technology
Sulfuric acid is basic chemical industry product, mainly contains metallurgical off-gas acid-making and sulphur incineration flue gas relieving haperacidity two kinds of techniques.The flue-gas temperature of smelting flue gas or the sulphur burning generation produced, usually between 1000-1200 DEG C, needs to be cooled to about 420 DEG C to enter follow-up conversion section by the SO in flue gas
2be converted into SO
3for absorbing relieving haperacidity.There is a large amount of thermal releases out in flue gas cooling procedure, industrially reclaiming this part heat by arranging smoke and waste steam boiler.The process unit of sulfuric acid industry is moving towards to maximize gradually, and present 30-80 ten thousand tons/year of devices are very common.Along with the expansion of single cover sulfuric acid production plant scale, the volume of smoke and waste steam boiler is also increasing.The expansion of smoke and waste steam boiler volume brings the difficulty manufacturing and install, and after waste heat boiler device maximizes simultaneously, the flue-gas temperature difficulty controlling heat boiler outlet also strengthens.Conversion section requires higher to cooled flue-gas temperature, production practices show it is regulate the flue gas exit temperature effect of waste heat boiler all not obvious, because the temperature and pressure of waste heat boiler steam is insensitive variable concerning exhaust-heat boiler flue gas outlet temperature by waste heat boiler steam pressure or temperature.The current industrial flue gas exit temperature adopting the method increasing high-temperature flue gas branch line to regulate waste heat boiler, to meet the flue gas process temperature requirement of conversion section, because the branch line temperature in existing technique is higher, often there is branch line valve and damage the phenomenon causing producing parking.
Sulfuric acid industry production in order to prevent dew point corrosion, usually the design of the flue gas exit temperature of economizer is being run higher than on flue gas dew point, according to principle of heat balance, the boiler feed temperature out entering smoke and waste steam boiler drum from economizer is general all lower than the saturated-steam temperature of smoke and waste steam boiler, therefore, the feed temperature entering smoke and waste steam boiler also has the space raised.
Summary of the invention
The purpose of this utility model is: the smoke and waste steam boiler device providing a kind of Large sulfuric acid production line, this smoke and waste steam boiler device can reduce manufacture and the mounting cost of Large sulfuric acid production line waste heat boiler, and the stability of gas washing in SA production can be improved, reduce gas washing in SA production integrated cost.
Technical solution of the present utility model is: this smoke and waste steam boiler device comprises high-temperature boiler section, low temperature boiler section, middle temperature flue gas connects bobbin carriage, high-temperature economizer and drum, high-temperature flue gas pipeline is provided with at the gas approach end of high-temperature boiler section, low-temperature flue gas pipeline in being provided with between the port of export and high-temperature economizer of low temperature boiler section, low-temperature flue gas pipeline is provided with at the port of export of high-temperature economizer, low-temperature flue gas branch line during middle low-temperature flue gas pipeline is provided with, middle low-temperature flue gas branch line is provided with valve, high-temperature economizer is provided with low temperature boiler feedwater pipeline, high-temperature boiler water-supply line is provided with between high-temperature economizer and drum, high-temperature boiler section, low temperature boiler section, middle temperature flue gas connects bobbin carriage, high-temperature economizer and drum connect into smoke and waste steam boiler device according to above-mentioned pipeline integrity.
During normal work, high-temperature flue gas enters high-temperature boiler section by high-temperature flue gas pipeline, high-temperature flue gas connects bobbin carriage, low temperature boiler section be cooled to middle low-temperature flue gas through high-temperature boiler section, middle temperature flue gas, and middle low-temperature flue gas enters high-temperature economizer and is cooled to low-temperature flue gas further and removes conversion section; To be entered after high-temperature economizer is heated by water-supply line from the boiler feedwater of low-level (stack-gas) economizer and enter drum; When the technological temperature of low-temperature flue gas lower than conversion requirement, low-temperature flue gas branch line valve in unlatching, to ensure that low-temperature flue gas meets the temperature required for conversion section.
The utility model has the advantages that: the weight 1, reducing boiler monomer by arranging high-temperature boiler section and low temperature boiler section, reduces the manufacture of smoke and waste steam boiler, transport, installation difficulty; 2, by arranging high-temperature economizer, improve control and the degree of regulation of low-temperature flue gas temperature; 3, by arranging middle low-temperature flue gas branch line valve, significantly reducing the operating temperature of branch line valve, substantially prolongs the service life of branch line valve, improve the production efficiency of Large sulfuric acid production line generally; 4, the utility model overcomes the manufacture of Large sulfuric acid production line smoke and waste steam boiler, installs and produces the difficulty regulated, and improves the temperature control precision that flue gas enters conversion section, and improves the stability of gas washing in SA production, reduce gas washing in SA production integrated cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the smoke and waste steam boiler device of Large sulfuric acid production line of the present utility model.
In figure: 1 high-temperature flue gas pipeline, 2 high-temperature boiler sections, in 3, warm flue gas connects bobbin carriage, 4 low temperature boiler section, 5 drums, low-temperature flue gas pipeline in 6, low-temperature flue gas branch line in 7,8 valves, 9 high-temperature economizers, 10 low-temperature flue gas pipelines, 11 low temperature boiler feedwater pipelines, 12 high-temperature boiler water-supply lines.
Detailed description of the invention
Should be understood that, below in conjunction with accompanying drawing, technical solution of the present utility model is described, but not limit scope of the present utility model by any way.Easy in order to describe, omit the annex such as the mouth of pipe, manhole, instrumentation tap, bearing conventional on valve conventional on pipeline, equipment in explanation, the those skilled in the art of the industry design as required.The those of ordinary skill of the industry can make many modification and improvement, such as, change mass transport mode, and increase the quantity of heat exchanger, all these modification, adjustment, improvement all should be considered as protection domain of the present utility model.
As shown in Figure 1, this Large sulfuric acid production line smoke and waste steam boiler device comprises high-temperature boiler section 2, low temperature boiler section 4, middle temperature flue gas connects bobbin carriage 3, high-temperature economizer 9 and drum 5, high-temperature flue gas pipeline 1 is provided with at the gas approach end of high-temperature boiler section 2, low-temperature flue gas pipeline 6 in being provided with between low temperature boiler section 4 and high-temperature economizer 9, low-temperature flue gas pipeline 10 is provided with at the port of export of high-temperature economizer 9, low-temperature flue gas branch line 7 during middle low-temperature flue gas pipeline 6 is provided with, middle low-temperature flue gas branch line 7 is provided with valve 8, high-temperature economizer 9 is provided with low temperature boiler feedwater pipeline 11, high-temperature boiler water-supply line 12 is provided with between high-temperature economizer 9 and drum 5, high-temperature boiler section 2, low temperature boiler section 4, middle temperature flue gas connects bobbin carriage 3, high-temperature economizer 9 and drum 5 connect into smoke and waste steam boiler device according to above-mentioned pipeline integrity.
During normal work, high-temperature flue gas enters high-temperature boiler section 2 by high-temperature flue gas pipeline 1, high-temperature flue gas connects bobbin carriage 3, low temperature boiler section 4 be cooled to middle low-temperature flue gas through high-temperature boiler section 2, middle temperature flue gas, and middle low-temperature flue gas enters high-temperature economizer 9 by middle low-temperature flue gas pipeline 6 and is cooled to low-temperature flue gas further and removes conversion section by low-temperature flue gas pipeline 10; To be entered after high-temperature economizer is heated by water-supply line 11 from the boiler feedwater of low-level (stack-gas) economizer and enter drum 5 by boiler feedwater pipeline 12; When the technological temperature of low-temperature flue gas lower than conversion requirement, the valve 8 in unlatching on low-temperature flue gas branch line 7, to ensure that low-temperature flue gas meets the temperature required for conversion section.
The utility model reduces the weight of boiler monomer by arranging high-temperature boiler section 2 and low temperature boiler section 4, reduce the manufacture of smoke and waste steam boiler, transport, installation difficulty; Control and the degree of regulation of low-temperature flue gas temperature is improve by arranging high-temperature economizer 9; Significantly reduced the operating temperature of valve by the valve 8 arranging middle low-temperature flue gas branch line, substantially prolongs the service life of valve 8.
Claims (1)
1. Large sulfuric acid production line smoke and waste steam boiler device, it is characterized in that: this smoke and waste steam boiler device high-temperature boiler section (2), low temperature boiler section (4), middle temperature flue gas connects bobbin carriage (3), high-temperature economizer (9) and drum (5), high-temperature flue gas pipeline (1) is provided with at the gas approach end of high-temperature boiler section (2), middle low-temperature flue gas pipeline (6) is provided with between low temperature boiler section (4) and high-temperature economizer (9), low-temperature flue gas pipeline (10) is provided with at the port of export of high-temperature economizer (9), middle low-temperature flue gas pipeline (6) is provided with middle low-temperature flue gas branch line (7), middle low-temperature flue gas branch line (7) is provided with valve (8), high-temperature economizer (9) is provided with low temperature boiler feedwater pipeline (11), high-temperature boiler water-supply line (12) is provided with between high-temperature economizer (9) and drum (5), high-temperature boiler section (2), low temperature boiler section (4), middle temperature flue gas connects bobbin carriage (3), high-temperature economizer (9) and drum (5) connect into smoke and waste steam boiler device according to above-mentioned pipeline integrity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814108.4U CN205079626U (en) | 2015-10-21 | 2015-10-21 | Flue gas exhaust -heat boiler device of large -scale sulphuric acid production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814108.4U CN205079626U (en) | 2015-10-21 | 2015-10-21 | Flue gas exhaust -heat boiler device of large -scale sulphuric acid production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205079626U true CN205079626U (en) | 2016-03-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520814108.4U Active CN205079626U (en) | 2015-10-21 | 2015-10-21 | Flue gas exhaust -heat boiler device of large -scale sulphuric acid production line |
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| CN (1) | CN205079626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289428A (en) * | 2017-07-11 | 2017-10-24 | 贺照刚 | For burning the device and method that sulphur UTILIZATION OF VESIDUAL HEAT IN and steam are produced in bromine water production |
-
2015
- 2015-10-21 CN CN201520814108.4U patent/CN205079626U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289428A (en) * | 2017-07-11 | 2017-10-24 | 贺照刚 | For burning the device and method that sulphur UTILIZATION OF VESIDUAL HEAT IN and steam are produced in bromine water production |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 223002 Huaian City, Jiangsu province Qingpu District West Road No. 40 Patentee after: Jiangsu Kesheng Intelligent Equipment Co.,Ltd. Address before: 223002 Huaian City, Jiangsu province Qingpu District West Road No. 40 Patentee before: JIANGSU KESHENG CHEMICAL MACHINERY Co.,Ltd. |