CN202835423U - Air pre-heater for preparing sulfuric acid by high-temperature pyrolysis of waste sulfuric acid - Google Patents
Air pre-heater for preparing sulfuric acid by high-temperature pyrolysis of waste sulfuric acid Download PDFInfo
- Publication number
- CN202835423U CN202835423U CN201220386557XU CN201220386557U CN202835423U CN 202835423 U CN202835423 U CN 202835423U CN 201220386557X U CN201220386557X U CN 201220386557XU CN 201220386557 U CN201220386557 U CN 201220386557U CN 202835423 U CN202835423 U CN 202835423U
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- China
- Prior art keywords
- sulfuric acid
- air preheater
- heater
- air
- tube
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- 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.)
- Expired - Lifetime
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Air Supply (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The utility model discloses important equipment, namely an air pre-heater, in a process of preparing industrial sulfuric acid by high-temperature pyrolysis of waste sulfuric acid, and belongs to the technical field of chemical heat exchange equipment. The air pre-heater mainly comprises tube passes, shell passes, a hot side air inlet, a hot side air outlet, a cold side air inlet, a cold side air outlet, a tube pass cleaning hole, tube pass ash discharge holes, a shell pass acid discharge hole, a manhole, a secondary line connection tube and supporting seats. The air pre-heater has the advantages of good heat exchange effect, capabilities of fully utilizing heat energy and saving fuel gas, economy and high efficiency. The air pre-heater can be widely popularized and applied in the process of preparing the industrial sulfuric acid by high-temperature pyrolysis of the waste sulfuric acid.
Description
Technical field
The utility model belongs to petrochemical industry heat transmission equipment technical field, relates to an a kind of visual plant-air preheater producing industrial sulphuric acid technique for the Waste Sulfuric Acid Pintsch process.
Background technology
Air preheater is that the Waste Sulfuric Acid Pintsch process of petroleum chemical industry alkylation generation is produced a visual plant in the industrial sulphuric acid technique again, its Main Function is exactly to carry out heat exchange from boiler high-temperature furnace gas out and the normal temperature air of sending into the Waste Sulfuric Acid pyrolysis furnace, improve the temperature that enters Waste Sulfuric Acid pyrolysis furnace air, reduce the consumption of fuel gas in the Waste Sulfuric Acid cracking process, save the energy, greatly reduced operating cost.
Summary of the invention
The purpose of this utility model in order to reach taking full advantage of of the energy, improves the temperature that enters Waste Sulfuric Acid pyrolysis furnace air exactly, reduces the consumption of fuel gas, reduces the production run cost.And a kind of air preheater for Waste Sulfuric Acid Pintsch process sulfuric acid processed that proposes.
The utility model is realized by following technical scheme: the air preheater that is used for Waste Sulfuric Acid Pintsch process sulfuric acid processed, it is characterized in that this air preheater comprises tube side, shell side, hot side-inlet, hot side gas outlet, cold side air inlet, cold side gas outlet, tube side clean-up port, tube side ash discharging hole, shell side acid discharge mouth, manhole, by-pass interface, the bottom is useful on installs fixing supporting leg.
Usually, each mouth of pipe described in the utility model specifically arranges as follows: hot side air inlet/outlet is at the two ends of preheater, communicate with tube side, the cold side air inlet/outlet is at the middle part of preheater, communicate with shell side, the mouth of pipe is all opened up, and the clean-up port is in the side of equipment, communicate with tube side, the by-pass interface communicates with tube side at hot side-inlet end, totally two of ash discharging holes, be arranged on the two ends (each) of hot side air inlet/outlet, the mouth of pipe is all opened down, and ash discharging hole is located at the bottom in shell side stage casing, and manhole is located at the top in shell side stage casing, supporting leg is used for fastening, is arranged at the bottom of equipment.
The utility model is a visual plant-air preheater producing industrial sulphuric acid technique for the Waste Sulfuric Acid Pintsch process.Waste Sulfuric Acid is Pintsch process in pyrolysis furnace, produce approximately 1100 ℃ of high-temperature furnace gas, furnace gas is down to about 700 ~ 800 ℃ through temperature behind the boiler, this hot gas enters tube side from the hot side-inlet of air preheater, the normal temperature air of sending here from air blower enters shell side from the cold side air inlet of air preheater, these two kinds cold and hot gases are through after the heat exchange, the high-temperature furnace gas temperature is down to approximately 350 ~ 400 ℃, out enter the relieving haperacidity cleaning procedure from the hot side gas outlet of air preheater, air is elevated to 500 ~ 600 ℃ through temperature after the heat exchange, out enters in the pyrolysis furnace for the Waste Sulfuric Acid cracking from the cold side gas outlet of air preheater.Owing to can produce a large amount of dusts in the Waste Sulfuric Acid cracking process, therefore in the air inlet/outlet side of tube side shell a cleaning eye is set respectively, the bottom respectively arranges an ash-hole, and the shell side shell arranges an acid discharge hole, washes inner residue during easy access.Manhole and by-pass also are set simultaneously take over, the purpose that by-pass is taken over mainly is the temperature of regulating hot and cold both sides exit gas.Equipment material is stainless steel, and the equipment that can prevent is corroded.
Mouth of pipe size in the utility model is decided with unit scale.
In the petroleum chemical industry alkylation process, produce a large amount of concentration and be 80%～90% Waste Sulfuric Acid.Can alkylating development and spent acid rationally utilize closely related, along with country to the environmental protection pay attention to day by day, the pollution problem that solves Waste Sulfuric Acid is imperative.Build spent acid cracker extracting sulfuric acid, can solve problem of environmental pollution, comprehensively reclaim simultaneously Waste Sulfuric Acid, the industrial sulphuric acid that production obtains returns alkyl plant and recycles, turn waste into wealth, and be to kill two birds with one stone.
The Waste Sulfuric Acid Pintsch process is produced industrial sulphuric acid and is advanced technologies newly developed in recent years, so that the Waste Sulfuric Acid that alkylation produces is fully utilized, and this equipment is the visual plant in this new technology, and the popularization of the Waste Sulfuric Acid Pintsch process being produced industrial sulphuric acid technique plays an important role.Therefore, this device value gets in practice and promotes the use of.
Description of drawings
Accompanying drawing 1 is the utility model embodiment air preheater structural representation.In the accompanying drawing, 1-shell side; 2-tube side; 3-hot side-inlet; 4-hot side gas outlet; 5-cold side air inlet; 6-cold side gas outlet; 7-clean-up port; 8-ash discharging hole; 9-acid discharge mouth; 10-by-pass interface; 11-manhole; 12-bearing.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in detail.
Embodiment: the present embodiment as shown in Figure 1, air preheater mainly comprises stainless steel shell side 1, inside is provided with stainless steel tube side 2, hot side-inlet 3, hot side gas outlet 4, cold side air inlet 5, cold side gas outlet 6, clean-up port 7, ash discharging hole 8, acid discharge mouth 9, by-pass interface 10, manhole 11, and this equipment is installed by bearing 12 levels.
The present embodiment operates like this: Waste Sulfuric Acid is Pintsch process in pyrolysis furnace, produce approximately 1100 ℃ of high-temperature furnace gas, furnace gas is down to about 700 ~ 800 ℃ through temperature behind the boiler, this hot gas enters tube side 1 from the hot side-inlet 3 of air preheater, the normal temperature air of sending here from air blower enters shell side 2 from the cold side air inlet 5 of air preheater, these two kinds cold and hot gases are through after the heat exchange, the high-temperature furnace gas temperature is down to approximately 350 ~ 400 ℃, out enter the relieving haperacidity cleaning procedure from the hot side gas outlet 4 of air preheater, air is elevated to 500 ~ 600 ℃ through temperature after the heat exchange, out enters in the pyrolysis furnace for the Waste Sulfuric Acid cracking from the cold side gas outlet 6 of air preheater.Owing to can produce a large amount of dusts in the Waste Sulfuric Acid cracking process, therefore in hot side air inlet/outlet 3,4 sides of tube side 2 shells a cleaning eye 7 is set respectively, the bottom respectively arranges an ash-hole 8, and shell side 1 shell arranges an acid discharge mouth 9, washes inner residue during easy access.Manhole 11 and by-pass also are set simultaneously take over 10, the purpose of by-pass adapter 10 mainly is the temperature of regulating cold side outlet 6, hot side outlet 4 gases, fixes by bearing 12 levels during installation.Equipment material is stainless steel, and the equipment that can prevent is corroded.
Use of the present utility model has reached taking full advantage of of the energy, has improved the temperature that enters Waste Sulfuric Acid pyrolysis furnace air, reduces the consumption of fuel gas, reduces the production run cost.Therefore, this device value gets in practice and promotes the use of.
Claims (9)
1. air preheater that is used for Waste Sulfuric Acid Pintsch process sulfuric acid processed, it is characterized in that this air preheater comprises tube side, shell side, hot side-inlet, hot side gas outlet, cold side air inlet, cold side gas outlet, tube side clean-up port, tube side ash discharging hole, shell side acid discharge mouth, manhole, by-pass interface, the bottom is useful on installs fixing supporting leg.
2. air preheater according to claim 1 is characterized in that hot side-inlet, hot side gas outlet at the two ends of preheater, communicate with tube side, and the mouth of pipe is all opened up.
3. air preheater according to claim 1 is characterized in that cold side air inlet, cold side gas outlet at the middle part of preheater, communicate with shell side, and the mouth of pipe is all opened up.
4. air preheater according to claim 1 is characterized in that the clean-up port in the side of preheater, communicates with tube side.
5. air preheater according to claim 1 is characterized in that the by-pass interface at hot side-inlet end, communicates with tube side.
6. air preheater according to claim 1 is characterized in that totally two of ash discharging holes, is separately positioned on the two ends of hot side-inlet, hot side gas outlet, and the mouth of pipe is all opened down.
7. air preheater according to claim 1 is characterized in that the acid discharge mouth is located at the bottom in shell side stage casing.
8. air preheater according to claim 1 is characterized in that manhole is located at the top in shell side stage casing.
9. air preheater according to claim 1 is characterized in that supporting leg is arranged at the bottom of preheater, is used for fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220386557XU CN202835423U (en) | 2012-08-07 | 2012-08-07 | Air pre-heater for preparing sulfuric acid by high-temperature pyrolysis of waste sulfuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220386557XU CN202835423U (en) | 2012-08-07 | 2012-08-07 | Air pre-heater for preparing sulfuric acid by high-temperature pyrolysis of waste sulfuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202835423U true CN202835423U (en) | 2013-03-27 |
Family
ID=47947117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220386557XU Expired - Lifetime CN202835423U (en) | 2012-08-07 | 2012-08-07 | Air pre-heater for preparing sulfuric acid by high-temperature pyrolysis of waste sulfuric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202835423U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766953A (en) * | 2016-12-21 | 2017-05-31 | 中石化南京工程有限公司 | A kind of phosphorous Waste Sulfuric Acid cracking waste heat Application way |
| CN107023814A (en) * | 2017-04-25 | 2017-08-08 | 江苏科瑞工程设计有限公司 | The exhaust heat recovering method and equipment of the high-temperature flue gas containing strong corrosive medium in spent acid cracking |
| CN107143863A (en) * | 2017-03-24 | 2017-09-08 | 中石化南京工程有限公司 | A kind of spent acid cracking power-economizing method and system |
-
2012
- 2012-08-07 CN CN201220386557XU patent/CN202835423U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766953A (en) * | 2016-12-21 | 2017-05-31 | 中石化南京工程有限公司 | A kind of phosphorous Waste Sulfuric Acid cracking waste heat Application way |
| CN107143863A (en) * | 2017-03-24 | 2017-09-08 | 中石化南京工程有限公司 | A kind of spent acid cracking power-economizing method and system |
| CN107023814A (en) * | 2017-04-25 | 2017-08-08 | 江苏科瑞工程设计有限公司 | The exhaust heat recovering method and equipment of the high-temperature flue gas containing strong corrosive medium in spent acid cracking |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |