CN105782940A - Waste heat boiler for waste sulfuric acid cracking and regenerating device - Google Patents
Waste heat boiler for waste sulfuric acid cracking and regenerating device Download PDFInfo
- Publication number
- CN105782940A CN105782940A CN201610324803.1A CN201610324803A CN105782940A CN 105782940 A CN105782940 A CN 105782940A CN 201610324803 A CN201610324803 A CN 201610324803A CN 105782940 A CN105782940 A CN 105782940A
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- Prior art keywords
- boiler
- waste
- sulfuric acid
- exchanger tube
- heat exchanger
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
- F23J2700/001—Ash removal, handling and treatment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M2900/00—Special features of, or arrangements for combustion chambers
- F23M2900/05001—Preventing corrosion by using special lining materials or other techniques
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M2900/00—Special features of, or arrangements for combustion chambers
- F23M2900/05004—Special materials for walls or lining
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
A waste heat boiler for a waste sulfuric acid cracking and regenerating device comprises a boiler body composed of a shell, and is characterized in that the front portion of the boiler body is provided with a front smoke box, one ash discharging opening, a rear smoke box, manholes and the other ash discharging opening; heat exchange pipes inclined by a certain angle are arranged in the boiler body, and the inclination angles of the heat exchange pipes are determined according to the kinematic viscosity of molten salt attached to the inner walls of the pipes; and an acid-resisting thermal insulation lining is arranged on the inner side of the shell, an outer insulating layer is arranged on the outer side of the shell, and the acid-resisting thermal insulation lining is made of a binding agent and aggregate. The waste heat boiler is efficient in running, safe and stable.
Description
Technical field
The invention belongs to technical field of environmental protection in chemical industry, be specifically related to a kind of waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device.
Background technology
All kinds of chemical plant installations of China, such as relating to arrive the techniques such as sulfonation, alkylation, hydration hydrolysis, purification and dehydration, annual all can a large amount of Waste Sulfuric Acid of by-product, wherein containing a large amount of organic impuritiess and inorganic salts in a big chunk Waste Sulfuric Acid, use conventional methods extremely difficult process, bring great environmental protection pressure to enterprise.
At present, process this kind of Waste Sulfuric Acid the most thoroughly, the technique of most environmental protection be exactly Waste Sulfuric Acid pyrolysis recycle technique.In Waste Sulfuric Acid pyrolysis recycle technique, the flue-gas temperature that pyrolysis furnace is discharged is up to 1100 DEG C.Owing to flue gas containing substantial amounts of moisture and ash, before flue gas continuous operation after entering, have to pass through washing, purifying.Flue gas washing purifies and is necessary for first cooling down, waste heat boiler is undoubtedly optimum selection as chiller, is recycled by the high level heat in flue gas by waste heat boiler, produces middle pressure steam, not only save the energy, be also greatly reduced the operating cost of device.
Owing to the flue gas that pyrolysis furnace is discharged containing the SO of high concentration2、SO3、H2The components such as O, and carry more ash or even liquid salt secretly so that the flue gas entering waste heat boiler has severe corrosive and tack, it is easy to causes boiler corrosion perforation and heat exchanger tube ash deposit and slag buildup, adopts traditional waste heat boiler cannot meet the requirement of technique.
For the characteristic of Waste Sulfuric Acid pyrolysis recycle flue gas, the present invention propose a kind of can tolerate fume high-temperature corrosion for a long time again can the waste heat boiler of online ash removal salt discharge.
Summary of the invention
Owing to traditional boiler is not used to the waste heat recovery of Waste Sulfuric Acid pyrolysis recycle flue gas, the present invention is directed to above-mentioned present situation, it is proposed that a kind of waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device.
The present invention is achieved like this: for the waste heat boiler of Waste Sulfuric Acid pyrolysis recycle device, including the boiler body being made up of housing, it is characterised in that boiler body front portion is provided with front smoke box, the front end of front smoke box arranges gas approach, side arranges manhole, and bottom arranges dust inlet；Boiler body rear portion is provided with rear smoke box, and the top of rear smoke box or side arrange exhanst gas outlet, and side arranges manhole, and bottom arranges dust inlet；The heat exchanger tube of boiler body built-in skew certain angle, the kinematic viscosity of the molten state salt that the angle of inclination of heat exchanger tube is adhered to according to inside pipe wall determines；Rear smoke box is provided with and heat exchanger tube deashing pipe one to one, and deashing pipe one end communicates with heat exchanger tube, and the other end is provided with the sealing structure of convenient dismounting；Boiler body top is provided with drum；Boiler body bottom is provided with saddle；Case inside is provided with acid-proof heat-insulation lining, and hull outside is provided with external thermal insulation.
Usually, described heat-insulating acid-resisting lining consist of bonding agent and aggregate.
Described bonding agent is: one or more in silicate, aluminate or phosphate；Aggregate is: one or more in porous clinker, hollow ball, floating bead, kieselguhr, perlite, Vermiculitum, haydite.
Described porous clinker is: one or more in siliceous, clayey, High-Alumina, mullite, corundum；Hollow ball is: one or more in aluminum oxide, mullite, aluminum chromium matter, chromium matter, zirconium matter.
The inclination angle of described heat exchanger tube, by keeping boiler front portion saddle height constant, is raised the saddle height of postmedian, or is directly arranged when boiler's tube-plate welds with heat exchanger tube；Heat exchanger tube material selects cast iron, carbon steel, steel alloy, carborundum according to different flue gas compositions.
Described deashing pipe is concentric with heat exchanger tube, and deashing pipe one end communicates with heat exchanger tube, and the other end is provided with the sealing structure of convenient dismounting.
The form of described sealing structure adopts screw thread, flange, cutting ferrule, the material selection carbon steel of deashing pipe or steel alloy.
The case inside of described boiler body is welded with bitch, and for fixing the heat-insulating acid-resisting lining of case inside, the material of housing is carbon steel or steel alloy.
Described external thermal insulation adopts the insulation materials such as composition silicate fiber felt, ceramic fiber blanket or rock wool.
Described boiler body bottom is provided with 2 ~ 6 each and every one saddles, and one of them saddle is fixed saddle, and other is sliding saddle.
What the present invention was maximum is characterized in that efficiently and runs safety and stability.Owing to Waste Sulfuric Acid pyrolysis recycle flue gas has extremely strong hot, aggressive, the lining of this waste heat boiler and heat exchanger tube material have selected the material of high temperature resistant erosion for the characteristic of flue gas；It is entrained with substantial amounts of ash or even fused salt additionally, due in Waste Sulfuric Acid pyrolysis recycle flue gas, the heat exchanger tube of this waste heat boiler tilts certain angle in the horizontal direction, it is easy to the discharge of the liquid fused salt that flue gas is carried secretly, and it is provided with deashing pipe, achieve the online ash removal of waste heat boiler, solve the unplanned parking problem owing to exchanging pipe of boiler by waste ash deposit and slag buildup causes.
Accompanying drawing explanation
The following drawings is the structural representation of waste heat boiler of the present invention, and its effect only for illustrating the structure of waste heat boiler in conjunction with above-mentioned word, rather than is used for limiting the scope of the present invention.
Fig. 1 is the structural representation of embodiment of the present invention waste heat boiler.
In figure: 1, front smoke box, 2, gas approach, 3, manhole, 4, dust inlet, 5, rear smoke box, 6, exhanst gas outlet, 7, heat exchanger tube, 8, deashing pipe, 9, seal structure, 10, drum, 11, saddle, 12, acid-proof heat-insulation lining, 13, housing, 14, external thermal insulation.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail in.
In example below, waste heat boiler structure is shown in accompanying drawing 1.
Embodiment 1
Waste heat boiler for waste sulfuric acid from alkylation pyrolysis recycle device: boiler body front portion is provided with front smoke box (1), and the front end of front smoke box (1) arranges gas approach (2), and side arranges manhole (3), and bottom arranges dust inlet (4)；Smoke box (5) after boiler body rear portion is provided with, the top of rear smoke box (5) or side arrange exhanst gas outlet (6), and side arranges manhole (3), and bottom arranges dust inlet (4)；The built-in some heat exchanger tubes (7) tilting certain angle of boiler body, the kinematic viscosity of the molten state salt that the angle of inclination of heat exchanger tube (7) is adhered to according to inside pipe wall determines, inclination angle is by keeping boiler front portion saddle (11) highly constant, and the saddle (11) raising postmedian highly realizes；The material of heat exchanger tube (7) is carbon steel or steel alloy；Rear smoke box (5) is provided with and heat exchanger tube (7) deashing pipe (8) one to one, and deashing pipe (8) one end communicates with heat exchanger tube (7), and the other end is provided with the sealing structure (9) of convenient dismounting；The acid-proof heat-insulation lining (12) being provided with inside boiler body, the silicate that consists of of lining does bonding agent addition High-Alumina porous clinker；Housing (13) arranged outside has alumina silicate fibre heat-insulation layer (14).Boiler body top is provided with drum (10)；Boiler body bottom is provided with three saddles (11), and the saddle (11) at middle part is fixing end, and former and later two saddles (11) are sliding end.
The high-temperature flue gas that pyrolysis furnace is discharged enters waste heat boiler from gas approach (2), is discharged into follow-up equipment from the exhanst gas outlet (6) of rear smoke box (5) after reclaiming heat energy by heat exchanger tube (7).High level heat in flue gas enters boiler-steam dome (10) by producing middle pressure steam after heat exchanger tube (7) heat exchange.The ash part carried secretly in flue gas is deposited to dust inlet (4) in smoke box (1,5), and a part is attached in the middle of heat exchanger tube (7).When heat exchanger tube (7) ash deposit and slag buildup is more, exhaust-heat boiler flue gas is imported and exported the pressure drop of (2,6) and can be continued to raise, and at this moment needs the sealing structure (9) unloading deashing pipe (8) one by one to carry out deashing.Owing to waste heat boiler is negative-pressure operation, during operation, high-temperature flue gas and dust stratification will not be overflowed, it is ensured that device properly functioning.
Embodiment 2
Waste heat boiler for high saliferous Waste Sulfuric Acid pyrolysis recycle device: boiler body front portion is provided with front smoke box (1), and the front end of front smoke box (1) arranges gas approach (2), and side arranges manhole (3), and bottom arranges dust inlet (4)；Smoke box (5) after boiler body rear portion is provided with, the top of rear smoke box (5) or side arrange exhanst gas outlet (6), and side arranges manhole (3), and bottom arranges dust inlet (4)；The built-in some heat exchanger tubes (7) of boiler body, the kinematic viscosity of the molten state salt that the angle of inclination of heat exchanger tube (7) is adhered to according to inside pipe wall determines, inclination angle is directly arranged when boiler's tube-plate welds with heat exchanger tube (7)；The material of heat exchanger tube (7) is carborundum；Rear smoke box (5) is provided with and heat exchanger tube (7) deashing pipe (8) one to one, and deashing pipe (8) one end communicates with heat exchanger tube (7), and the other end is provided with the sealing structure (9) of convenient dismounting；Being provided with acid-proof heat-insulation lining (12) inside boiler body, the aluminate bonding agent that consists of of lining adds corundum porous clinker；Housing (13) arranged outside has alumina silicate fibre heat-insulation layer (14).Boiler body top is provided with drum (10)；Boiler body bottom is provided with three saddles (11), and the height of three saddles is gradually lowered before backward, and to ensure the inclination certain angle of heat exchanger tube, the saddle (11) at waste heat boiler rear portion is fixing end, and two other saddle (11) is sliding end.
The high-temperature flue gas that pyrolysis furnace is discharged enters waste heat boiler from gas approach (2), is discharged into follow-up equipment from the exhanst gas outlet (6) of rear smoke box (5) after reclaiming heat energy by heat exchanger tube (7).High level heat in flue gas enters boiler-steam dome (10) by producing middle pressure steam after heat exchanger tube (7) heat exchange.The liquid fused salt carried secretly in flue gas is constantly enriched with after being attached on heat exchanger tube (7) wall, and the heat exchanger tube prolonging inclination under gravity flows into front smoke box (1)；The ash part carried secretly in flue gas is deposited to dust inlet (4) in smoke box (1,5), and a part is attached in the middle of heat exchanger tube (7).When heat exchanger tube (7) ash deposit and slag buildup is more, exhaust-heat boiler flue gas is imported and exported the pressure drop of (2,6) and can be continued to raise, and at this moment needs the sealing structure (9) unloading deashing pipe (8) one by one to carry out deashing.Owing to waste heat boiler is negative-pressure operation, during operation, high-temperature flue gas and dust stratification will not be overflowed, it is ensured that device properly functioning.
Claims (10)
1., for a waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device, including the boiler body being made up of housing, it is characterised in that boiler body front portion is provided with front smoke box, the front end of front smoke box arranges gas approach, and side arranges manhole, and bottom arranges dust inlet；Boiler body rear portion is provided with rear smoke box, and the top of rear smoke box or side arrange exhanst gas outlet, and side arranges manhole, and bottom arranges dust inlet；The heat exchanger tube of boiler body built-in skew certain angle, the kinematic viscosity of the molten state salt that the angle of inclination of heat exchanger tube is adhered to according to inside pipe wall determines；Rear smoke box is provided with and heat exchanger tube deashing pipe one to one, and deashing pipe one end communicates with heat exchanger tube, and the other end is provided with the sealing structure of convenient dismounting；Boiler body top is provided with drum；Boiler body bottom is provided with saddle；Case inside is provided with acid-proof heat-insulation lining, and hull outside is provided with external thermal insulation.
2. the waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device according to claim 1, it is characterised in that heat-insulating acid-resisting lining consist of bonding agent and aggregate.
3. the waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device according to claim 2, it is characterised in that bonding agent is: one or more in silicate, aluminate or phosphate；Aggregate is: one or more in porous clinker, hollow ball, floating bead, kieselguhr, perlite, Vermiculitum, haydite.
4. the waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device according to claim 3, it is characterised in that porous clinker is: one or more in siliceous, clayey, High-Alumina, mullite, corundum；Hollow ball is: one or more in aluminum oxide, mullite, aluminum chromium matter, chromium matter, zirconium matter.
5. the waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device according to claim 1, it is characterized in that the inclination angle of heat exchanger tube is by keeping boiler front portion saddle height constant, raise the saddle height of postmedian, or directly arrange when boiler's tube-plate welds with heat exchanger tube；Heat exchanger tube material selects cast iron, carbon steel, steel alloy, carborundum according to different flue gas compositions.
6. the waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device according to claim 1, it is characterised in that deashing pipe is concentric with heat exchanger tube, deashing pipe one end communicates with heat exchanger tube, and the other end is provided with the sealing structure of convenient dismounting.
7. the waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device according to claim 1 or 6, it is characterised in that the form sealing structure adopts screw thread, flange, cutting ferrule, the material selection carbon steel of deashing pipe or steel alloy.
8. the waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device according to claim 1, is characterized in that the case inside of boiler body is welded with bitch, and for fixing the heat-insulating acid-resisting lining of case inside, the material of housing is carbon steel or steel alloy.
9. the waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device according to claim 1, it is characterised in that external thermal insulation adopts the insulation materials such as composition silicate fiber felt, ceramic fiber blanket or rock wool.
10. the waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device according to claim 1, is characterized in that boiler body bottom is provided with 2 ~ 6 each and every one saddles, and one of them saddle is fixed saddle, and other is sliding saddle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610324803.1A CN105782940A (en) | 2016-05-17 | 2016-05-17 | Waste heat boiler for waste sulfuric acid cracking and regenerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610324803.1A CN105782940A (en) | 2016-05-17 | 2016-05-17 | Waste heat boiler for waste sulfuric acid cracking and regenerating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105782940A true CN105782940A (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610324803.1A Pending CN105782940A (en) | 2016-05-17 | 2016-05-17 | Waste heat boiler for waste sulfuric acid cracking and regenerating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105782940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724095A (en) * | 2019-01-28 | 2019-05-07 | 安庆市泰发能源科技有限公司 | A kind of waste heat boiler for Hand scarf tube bank blocking of not stopping work |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2622556Y (en) * | 2003-05-07 | 2004-06-30 | 上海海陆昆仑高科技工程有限公司 | Sectional boiler with fire tube for preparing acid by sulphur |
| CN102182999A (en) * | 2011-01-26 | 2011-09-14 | 常州市奥琳斯邦热能设备有限公司 | Waste heat evaporator |
| CN204115526U (en) * | 2014-09-15 | 2015-01-21 | 沈阳海盛人工环境有限公司 | Gas-gas inclined tube-type heat exchanger |
| CN204873832U (en) * | 2015-06-23 | 2015-12-16 | 中国石油化工股份有限公司 | Modified is used for spent acid of sulfur waste acid cleavage technology to burn burning furnace |
| CN205065677U (en) * | 2015-10-20 | 2016-03-02 | 泰山集团股份有限公司 | Fire -tube type exhaust -heat boiler |
| CN205746752U (en) * | 2016-05-17 | 2016-11-30 | 江苏科瑞工程设计有限公司 | A kind of waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device |
-
2016
- 2016-05-17 CN CN201610324803.1A patent/CN105782940A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2622556Y (en) * | 2003-05-07 | 2004-06-30 | 上海海陆昆仑高科技工程有限公司 | Sectional boiler with fire tube for preparing acid by sulphur |
| CN102182999A (en) * | 2011-01-26 | 2011-09-14 | 常州市奥琳斯邦热能设备有限公司 | Waste heat evaporator |
| CN204115526U (en) * | 2014-09-15 | 2015-01-21 | 沈阳海盛人工环境有限公司 | Gas-gas inclined tube-type heat exchanger |
| CN204873832U (en) * | 2015-06-23 | 2015-12-16 | 中国石油化工股份有限公司 | Modified is used for spent acid of sulfur waste acid cleavage technology to burn burning furnace |
| CN205065677U (en) * | 2015-10-20 | 2016-03-02 | 泰山集团股份有限公司 | Fire -tube type exhaust -heat boiler |
| CN205746752U (en) * | 2016-05-17 | 2016-11-30 | 江苏科瑞工程设计有限公司 | A kind of waste heat boiler for Waste Sulfuric Acid pyrolysis recycle device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724095A (en) * | 2019-01-28 | 2019-05-07 | 安庆市泰发能源科技有限公司 | A kind of waste heat boiler for Hand scarf tube bank blocking of not stopping work |
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Application publication date: 20160720 |