CN203625040U - Device for improving steam yield of low-temperature residual-heat recycling system for sulfuric acid - Google Patents
Device for improving steam yield of low-temperature residual-heat recycling system for sulfuric acid Download PDFInfo
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- CN203625040U CN203625040U CN201320710555.6U CN201320710555U CN203625040U CN 203625040 U CN203625040 U CN 203625040U CN 201320710555 U CN201320710555 U CN 201320710555U CN 203625040 U CN203625040 U CN 203625040U
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- vaporizer
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000004064 recycling Methods 0.000 title abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000010521 absorption reaction Methods 0.000 claims abstract description 23
- 239000006200 vaporizer Substances 0.000 claims description 49
- 230000008676 import Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000002253 acid Substances 0.000 abstract description 25
- 239000008236 heating water Substances 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 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
- 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
Abstract
The utility model discloses a device for improving the steam yield of a low-temperature residual-heat recycling system for sulfuric acid. The device comprises a high-temperature absorption tower (1), a high-temperature circulating tank (2), a high-temperature circulating pump (3), an evaporator (4), a mixer (5), a water feed pump (6), a water jet pump (7), a deaerator (8), a second evaporator (9) and a demineralized water heater (10), wherein the second evaporator is arranged on an external acid producing pipeline of the low-temperature heat recycling system, secondary steam is generated by heating water with high-temperature sulfuric acid and injected into the inlet of a high-temperature absorption tower to serve as part of system supplementary water; heat of the secondary steam is brought into the heat recycling system, and more low-pressure stem with higher pressure can be generated by the evaporator of the heat recycling system. By virtue of the device, low-temperature residual heat which can heat feed water can produce low-pressure steam with high quality.
Description
Technical field
The sulfuric acid that the utility model relates in chemical industry is manufactured field, is specifically related to a kind of sulfuric acid low temperature residual neat recovering system steam generating capacity device that improves.
Background technology
Gas washing in SA production industry, has been provided with Low Temperature Thermal retrieving arrangement at dry absorption section at present, and its technical process is: containing SO
3process gas enter high temperature absorption tower, absorbed releases heat by spray acid in tower, acid temperature rise, high temperature concentrated acid is pumped pressurization by high temperature circulation pump and is sent into vaporizer and produce low-pressure steam, enters mixing tank and add water that to reduce acid dense after sour temperature drop is low, then sends into high temperature absorption tower circulation again and absorbs SO
3; Device produces acid and picks out from the circulation acid tube of evaporator outlet, after the cooling of feedwater heating apparatus and de-salted water well heater outside confession, the sour temperature of outer confession is generally 90 ℃ ~ 130 ℃, still has part heat to fail efficient recovery.In this class Low Temperature Thermal retrieving arrangement, the steam generating capacity of low-pressure steam is generally 1 ton of sulphuric acid production low-pressure steam 0.45t left and right of every production.
Therefore, need a kind of device that improves sulfuric acid low temperature residual neat recovering system steam generating capacity to address the above problem.。
Utility model content
For solving above-mentioned deficiency of the prior art, the purpose of this utility model is to provide a kind of device that improves sulfuric acid low temperature residual neat recovering system steam generating capacity.
For solving the problems of the technologies described above, the technical scheme that the device of raising sulfuric acid low temperature residual neat recovering system steam generating capacity of the present utility model adopts is as follows:
A kind of sulfuric acid low temperature residual neat recovering system steam generating capacity device that improves, comprise high temperature absorption tower, high temperature circulation groove, high temperature circulation pump, vaporizer, mixing tank, service pump, jet pump, deoxygenator, the second vaporizer and de-salted water well heater, described high temperature circulation groove connects the bottom on described high temperature absorption tower, described high temperature circulation pump connects the import of described high temperature circulation groove and vaporizer, the outlet of described vaporizer connects described mixing tank, and described mixing tank connects the top on described high temperature absorption tower; The outlet of described vaporizer also connects described the second vaporizer, and the import of described service pump connects described deoxygenator, and described feedwater pump outlet connects described vaporizer; The import of described jet pump connects described deoxygenator, and described injection water pump outlet connects described mixing tank and the second vaporizer; Described the second vaporizer connects described de-salted water well heater, and described de-salted water well heater connects described deoxygenator; On described the second vaporizer, be provided with secondary steam outlet, be provided with de-salted water import and sulfuric acid outlet on described de-salted water well heater, be provided with low-pressure steam outlet on described vaporizer, the top on described high temperature absorption tower is provided with process gas outlet.
Inventive principle: the second vaporizer is first sent in the product acid of heat recovery system, heating injection water produces secondary steam, and de-salted water well heater preheating de-salted water is sent in the product acid after cooling again, after sour temperature drop is low, sends outside.Extraneous de-salted water is first sent into the preheating of de-salted water well heater, then send into thermal de-aeration in deoxygenator, part deaerated water is sent into vaporizer through service pump and is produced low-pressure steam, another part deaerated water is sent into the second vaporizer through jet pump pressurization and is produced secondary steam, and some deaerated water send mixing tank to regulate the concentration of recycle acid too after jet pump pressurization.
Beneficial effect: the utility model improves sulfuric acid low temperature residual neat recovering system steam generating capacity device and sends outside on product acid tube road the second vaporizer is set at low-temperature heat recovery system, with high-temperature sulfuric acid heating water generation secondary steam, again these secondary steams are injected to high temperature absorption tower entrance, as a part for system make up water, bring the heat of secondary steam into heat recovery system simultaneously, finally, produce the more low-pressure steam of multiple pressure Li Genggao by the vaporizer of heat recovery system, originally low temperature exhaust heat that can only heated feed water can be produced to more high-grade low-pressure steam by this device.
Accompanying drawing explanation
Fig. 1 is the structural representation of raising sulfuric acid low temperature residual neat recovering system steam generating capacity device of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Referring to Fig. 1, raising sulfuric acid low temperature residual neat recovering system steam generating capacity device of the present utility model, comprises high temperature absorption tower 1, high temperature circulation groove 2, high temperature circulation pump 3, vaporizer 4, mixing tank 5, service pump 6, jet pump 7, deoxygenator 8, the second vaporizer 9 and de-salted water well heater 10.
High temperature circulation groove 2 connects the bottom on high temperature absorption tower 1, and high temperature circulation pump 3 connects high temperature circulation groove 2 and vaporizer 4.The outlet of vaporizer 4 connects mixing tank 5 and the second vaporizer 9.On vaporizer 4, be provided with low-pressure steam outlet, the top on high temperature absorption tower 1 is provided with process gas outlet.
The outlet of mixing tank 5 connects the top on high temperature absorption tower 1.The import of service pump 6 connects deoxygenator 8, and the outlet of service pump 6 connects vaporizer 4.The import of jet pump 7 connects deoxygenator 8, and the outlet of jet pump 7 connects mixing tank 5 and the second vaporizer 9.The second vaporizer 9 connects de-salted water well heater 10, and de-salted water well heater 10 connects deoxygenator 8.On the second vaporizer 9, be provided with secondary steam outlet, on de-salted water well heater 10, be provided with de-salted water import and sulfuric acid outlet.
embodiment 1
Containing SO
3the secondary steam (pressure is 0.25 ± 0.2MPa) that produces with the second vaporizer 9 of process gas mix at high temperature absorption tower 1 entrance, SO3 in process gas is recycled acid and absorbs in high temperature absorption tower 1, release of heat produces the high-temperature concentrated sulfuric acid of 205 ± 20 ℃, now in secondary steam, low-grade heat is converted into the heat of high-temperature concentrated sulfuric acid, high-temperature concentrated sulfuric acid enters high temperature circulation groove 2 in confluxing of tower bottom, send into vaporizer 4 and produce the low-pressure steam of 0.8 ± 0.2MPa through high temperature circulation pump 3 pressurization, after the vitriol oil goes out vaporizer, sour temperature drop is low to moderate 190 ± 20 ℃, the system that obtains is produced acid, the acid of part system product is sent into mixing tank 5 and is regulated acid dense, the sulfuric acid reducing after concentration returns to high temperature absorption tower 1 again, SO in circulation absorption technique gas
3, the product acid (temperature is 190 ± 20 ℃) of another part system picks out from the branch of the circulation acid tube of evaporator outlet, send into the second vaporizer 9 heated feed waters and produce the secondary steam that pressure is 0.25 ± 0.2MPa, acid temperature drop is low to moderate 130 ± 20 ℃, send into again de-salted water well heater 10 and heat de-salted water, acid temperature drop is low to moderate 70 ± 20 ℃, produces acid and send outside after cooling.The de-salted water that the external world sends into is heated to 85 ± 20 ℃ in de-salted water well heater 10, then sends into thermal de-aeration in deoxygenator 8, and the deaerated water part of 104 ℃ is sent into vaporizer 4 after service pump 6 pressurizations, produces the low-pressure steam of 0.8 ± 0.2MPa; Another deaerated water is sent into the second vaporizer 9 after jet pump 7 pressurizations, produce the secondary steam of 0.25 ± 0.2MPa, also have another deaerated water to send into the concentration of mixing tank adjusting recycle acid through jet pump 7 pressurizations, adopt the heat recovery system of this technical process, the low-pressure steam steam generating capacity of 1 ton of sulfuric acid of the every production of its system can be brought up to 0.58t by 0.45t.
Inventive principle: the second vaporizer is first sent in the product acid of heat recovery system, heating injection water produces secondary steam, and de-salted water well heater preheating de-salted water is sent in the product acid after cooling again, after sour temperature drop is low, sends outside.Extraneous de-salted water is first sent into the preheating of de-salted water well heater, then send into thermal de-aeration in deoxygenator, part deaerated water is sent into the low-pressure steam of vaporizer generation 0.8 ± 0.2MPa through service pump, another part deaerated water is sent into the second vaporizer through jet pump pressurization and is produced the secondary steam that pressure is 0.25 ± 0.2MPa, and some deaerated water send mixing tank to regulate recycle acid dense too after jet pump pressurization.
Raising sulfuric acid low temperature residual neat recovering system steam generating capacity device of the present utility model is sent outside to produce on acid tube road at low-temperature heat recovery system the second vaporizer is set, with high-temperature sulfuric acid heating water generation secondary steam, again these secondary steams are injected to high temperature absorption tower entrance, as a part for system make up water, bring the heat of secondary steam into heat recovery system simultaneously, finally, produce the more low-pressure steam of multiple pressure Li Genggao by the vaporizer of heat recovery system, low temperature exhaust heat that originally can only heated feed water can be produced to more high-grade low-pressure steam by this device.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (1)
1. one kind is improved sulfuric acid low temperature residual neat recovering system steam generating capacity device, it is characterized in that, comprise high temperature absorption tower (1), high temperature circulation groove (2), high temperature circulation pump (3), vaporizer (4), mixing tank (5), service pump (6), jet pump (7), deoxygenator (8), the second vaporizer (9) and de-salted water well heater (10), described high temperature circulation groove (2) connects the bottom on described high temperature absorption tower (1), described high temperature circulation pump (3) connects the import of described high temperature circulation groove (2) and vaporizer (4), the outlet of described vaporizer (4) connects described mixing tank (5), described mixing tank (5) connects the top on described high temperature absorption tower (1), the outlet of described vaporizer (4) also connects described the second vaporizer (9), and the import of described service pump (6) connects described deoxygenator (8), and the outlet of described service pump (6) connects described vaporizer (4), the import of described jet pump (7) connects described deoxygenator (8), and the outlet of described jet pump (7) connects described mixing tank (5) and the second vaporizer (9), described the second vaporizer (9) connects described de-salted water well heater (10), and described de-salted water well heater (10) connects described deoxygenator (8), on described the second vaporizer (9), be provided with secondary steam outlet, on described de-salted water well heater (10), be provided with de-salted water import and sulfuric acid outlet, on described vaporizer (4), be provided with low-pressure steam outlet, the top on described high temperature absorption tower (1) is provided with process gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710555.6U CN203625040U (en) | 2013-11-13 | 2013-11-13 | Device for improving steam yield of low-temperature residual-heat recycling system for sulfuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710555.6U CN203625040U (en) | 2013-11-13 | 2013-11-13 | Device for improving steam yield of low-temperature residual-heat recycling system for sulfuric acid |
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| Publication Number | Publication Date |
|---|---|
| CN203625040U true CN203625040U (en) | 2014-06-04 |
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| CN201320710555.6U Expired - Lifetime CN203625040U (en) | 2013-11-13 | 2013-11-13 | Device for improving steam yield of low-temperature residual-heat recycling system for sulfuric acid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483409A (en) * | 2018-04-02 | 2018-09-04 | 南京海陆化工科技有限公司 | One kind containing SO3Gas relieving haperacidity energy recycle device and method |
| CN117142439A (en) * | 2023-08-29 | 2023-12-01 | 美景（北京）环保科技有限公司 | Dry heat absorption capacity recovery device and method |
-
2013
- 2013-11-13 CN CN201320710555.6U patent/CN203625040U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483409A (en) * | 2018-04-02 | 2018-09-04 | 南京海陆化工科技有限公司 | One kind containing SO3Gas relieving haperacidity energy recycle device and method |
| CN117142439A (en) * | 2023-08-29 | 2023-12-01 | 美景（北京）环保科技有限公司 | Dry heat absorption capacity recovery device and method |
| CN117142439B (en) * | 2023-08-29 | 2024-04-02 | 美景（北京）环保科技有限公司 | Dry heat absorption capacity recovery device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: NANJING HAILU CHEMICAL TECHNOLOGY Co.,Ltd. Assignor: Yu Xiangdong Contract record no.: 2014320000728 Denomination of utility model: Device for improving steam yield of low-temperature residual-heat recycling system for sulfuric acid Granted publication date: 20140604 License type: Exclusive License Record date: 20141124 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |