CN103697694B - Negative pressure heating dual chamber tube furnace for crude benzol distillation - Google Patents
Negative pressure heating dual chamber tube furnace for crude benzol distillation Download PDFInfo
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- CN103697694B CN103697694B CN201210368097.2A CN201210368097A CN103697694B CN 103697694 B CN103697694 B CN 103697694B CN 201210368097 A CN201210368097 A CN 201210368097A CN 103697694 B CN103697694 B CN 103697694B
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Abstract
The present invention relates to the retort field of carbocyclic compound, a kind of negative pressure heating dual chamber tube furnace for crude benzol distillation.A kind of negative pressure heating dual chamber tube furnace for crude benzol distillation, including base (1), body of heater (2) and furnace roof (3), it is characterized in that: also include dividing plate (21), burner (22), radiating furnace tube (23), suspension bracket (24), convection furnace (31), convection coil (32), chimney (41) and turnover panel (42) etc., it is internal that dividing plate (21) is fixed on body of heater (2)；Each combustor of body of heater (2) inside respectively sets at least one burner (22) and a radiating furnace tube (23), convection furnace (31) is located on furnace roof (3), and the top of convection furnace (31) and chimney (41) connect.Floor space of the present invention is little, and thermic load is big, stable yield, and energy utilization rate is high, and effect on environment is little.
Description
Technical field
The present invention relates to the retort field of carbocyclic compound, a kind of negative pressure heating dual chamber tube furnace for crude benzol distillation.
Background technology
Crude benzol in coal gas is washed by coke-oven plant's coal gas through washing oil washing, then by distillation column by the crude benzol stripping in washing oil out.Crude benzol is a kind of important industrial chemicals, can be applicable to manufacture medicine, pesticide, dyestuff, spice etc. after deep processing.The normal pressure crude benzol distillation technique of coke-oven plant mainly uses separate unit diamond heating to provide thermal source containing benzene rich oil and saturated vapor at present, technical process inputs tube furnace for the richness washing oil containing benzene after heat exchange is heated to 160 DEG C, crude benzol distillation column is inputted after being heated to 180 DEG C again in tube furnace, the convection section of saturated vapor input tube furnace is heated to 400 DEG C of entrance regenerators, indirectly provides heat to crude benzol distillation column.It is insufficient that this technique also exists Btu utilization, produces and arranges outside waste water, pollutes the defect of environment, and it is big to operate operating cost, and production cost is high.
Summary of the invention
In order to overcome the defect of prior art, it is provided that a kind of simple in construction, easy to operate, effect on environment is little, and heat utilization rate is high, the distillation equipment of low cost, the invention discloses a kind of negative pressure heating dual chamber tube furnace for crude benzol distillation.
The present invention reaches goal of the invention by following technical solution:
A kind of negative pressure heating dual chamber tube furnace for crude benzol distillation, including base, body of heater and furnace roof, body of heater is placed on base, furnace roof is placed on the top of body of heater, it is characterized in that: also include dividing plate, burner, radiating furnace tube, suspension bracket, convection furnace, convection coil, chimney, turnover panel, observation door, manhole door, explosion proof door, maintenance door, staircase, dividing plate is fixed on furnace interior, the bottom of dividing plate is fixed on the bottom surface of furnace interior, the both sides of dividing plate are separately fixed on the inwall of body of heater, and furnace interior is separated into two combustor by dividing plate；Body of heater is made up of lining and shell, and lining is covered on the inwall of shell, and lining constitutes the inwall of body of heater, and shell constitutes the outer wall of body of heater；Each combustor of furnace interior respectively sets at least one burner and a radiating furnace tube, and the bottom of body of heater is located at by burner, and the top of radiating furnace tube is connected by the inwall of suspension bracket and body of heater, and radiating furnace tube is parallel with inboard wall of furnace body；Convection furnace is located on furnace roof, fixes convection coil in convection furnace, and convection coil is spiral coil, and the top of radiating furnace tube port after furnace roof passes and bottom convection coil connects, and the port at convection coil top passes from the furnace wall of convection furnace；The top of convection furnace and chimney connect, and are provided with turnover panel in chimney；Bottom of furnace body has observation door and manhole door, and the sidewall of body of heater has explosion proof door and observation door, and the outer wall of body of heater is fixed with staircase；The sidewall of convection furnace has manhole door, and the sidewall of chimney has maintenance door.
The described negative pressure heating dual chamber tube furnace for crude benzol distillation, is characterized in that: dividing plate employing clay brick, at least one being incubated in viscous, fire clay, lightening casting material and heat resisting steel are made；The number of burners of each combustor is not more than 5, and the load of each burner is less than 5MW；Radiating furnace tube uses rustless steel to make, and the stainless trade mark can select 20#, 304,316L, 304L or 316；Lining uses laying fireproof bricks, and shell and base all use carbon steel to make.
The described negative pressure heating dual chamber tube furnace for crude benzol distillation, is characterized in that: turnover panel uses manually, electrically or hydraulic-driven upset, adjusts angle of inclination according to the suction that body of heater endogenous cause of ill negative pressure produces, and the air pressure in chimney and body of heater is not higher than 300Pa；Temperature in body of heater is not higher than 700 DEG C.
When the present invention uses, delivering to pipe-still distillation tower heating chamber at the lean washing oil of 210 DEG C～250 DEG C through circulating pump pressurization containing benzene 0.2%～2% temperature at the bottom of crude benzol distillation column tower, the washing oil being 210 DEG C～260 DEG C through temperature after heating enters distillation column and contacts with liquid phase in tower and to provide heat；Delivering to tube furnace regenerator heating chamber at the regeneration washing oil of 210 DEG C～260 DEG C through circulating pump pressurization containing benzene 0.2%～2% temperature at the bottom of regenerator tower, the washing oil being 210 DEG C～270 DEG C through temperature after heating enters regenerator and contacts with liquid phase in tower and to provide heat；The outlet temperature regulation adding thermal medium controls by controlling gas quantity, two combustor be respectively provided with gas regulating device with indirectly control in body of heater temperature below 700 DEG C；Turnover panel in chimney is automatically adjusted angle of inclination to control flame combustion and body of heater internal gas pressure according to the suction size produced because of negative pressure.
The present invention uses vacuum distillation technique, vacuum equipment is utilized to produce negative pressure to reduce washing oil and the boiling point of crude benzol mixture, it is respectively regenerator by double formula tube furnaces and distillation column circulation provides heat, column bottom temperature is made to reach 200 DEG C～260 DEG C, out, can also make circulating washing oil be regenerated crude benzol stripping from washing oil simultaneously.The present invention does not use steam to heat, and can reduce and arrange outside waste water；Compare with the crude benzol distilling apparatus of identical scale and can save coke-stove gas consumption more than 20%.
The invention has the beneficial effects as follows: floor space is little, thermic load is big, stable yield, and energy utilization rate is high, and effect on environment is little, simple to operate, easily realizes automatization, and equipment investment is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
The present invention is further illustrated below by way of specific embodiment.
Embodiment 1
A kind of negative pressure heating dual chamber tube furnace for crude benzol distillation, including base 1, body of heater 2, furnace roof 3, dividing plate 21, burner 22, radiating furnace tube 23, suspension bracket 24, convection furnace 31, convection coil 32, chimney 41, turnover panel 42, observation door 51, manhole door 52, explosion proof door 53, maintenance door 54 and staircase 6, as shown in Figure 1, concrete structure is: body of heater 2 is placed on base 1, and furnace roof 3 is placed on the top of body of heater 2；It is internal that dividing plate 21 is fixed on body of heater 2, and the bottom of dividing plate 21 is fixed on the bottom surface within body of heater 2, and the both sides of dividing plate 21 are separately fixed on the inwall of body of heater 2, and dividing plate 21 is separated into two combustor by internal for body of heater 2；Body of heater 2 is made up of lining 25 and shell 26, and lining 25 is covered on the inwall of shell 26, and lining 25 constitutes the inwall of body of heater 2, and shell 26 constitutes the outer wall of body of heater 2；Each combustor within body of heater 2 respectively sets at least one burner 22 and a radiating furnace tube 23, and the bottom of body of heater 2 is located at by burner 22, and the top of radiating furnace tube 23 is connected by the inwall of suspension bracket 24 and body of heater 2, and radiating furnace tube 23 is parallel with body of heater 2 inwall；Convection furnace 31 is located on furnace roof 3, convection coil 32 is fixed in convection furnace 31, convection coil 32 is spiral coil, and the top of radiating furnace tube 23 port after furnace roof 3 passes and bottom convection coil 32 connects, and the port at convection coil 32 top passes from the furnace wall of convection furnace 31；Top and the chimney 41 of convection furnace 31 connect, and are provided with turnover panel 42 in chimney 41；Having observation door 51 and manhole door 52 bottom body of heater 2, the sidewall of body of heater 2 has explosion proof door 53 and observation door 51, and the outer wall of body of heater 2 is fixed with staircase 6；The sidewall of convection furnace 31 has manhole door 52, and the sidewall of chimney 41 has maintenance door 54.
Dividing plate 21 can use that clay brick, insulation be viscous, fire clay, lightening casting material or heat resisting steel are made, and the present embodiment selects fire clay；Burner 22 quantity of each combustor is not more than 5, and the present embodiment takes 1, and the load of each burner 22 is less than 5MW；Radiating furnace tube 23 uses rustless steel to make, and the stainless trade mark can select 20#, 304,316L, 304L or 316；Lining 25 uses laying fireproof bricks, shell 26 and base 1 all to use carbon steel to make.
Turnover panel 42 can use manually, electrically or hydraulic-driven upset, adjusts angle of inclination according to the suction that body of heater 2 endogenous cause of ill negative pressure produces, and the air pressure in chimney 41 and body of heater 2 is not higher than 300Pa；Temperature in body of heater 2 is not higher than 700 DEG C.
Burner 22 should be able to keep flameholding and strong adaptability, it is possible to meets coke gas pressure and can stably burn under big ups and downs, and the carbide produced when simultaneously ensure that burner not by the impurity in coal gas and burning blocks.For ensureing safety in production, burner 22 arranges flame detector, lighter and Everlasting fire device.
It is additionally provided with temperature and pressure detection device in body of heater 2 and CO detects device.
When the present embodiment uses, delivering to pipe-still distillation tower heating chamber at the lean washing oil of 210 DEG C～250 DEG C through circulating pump pressurization containing benzene 0.2%～2% temperature at the bottom of crude benzol distillation column tower, the washing oil being 210 DEG C～260 DEG C through temperature after heating enters distillation column and contacts with liquid phase in tower and to provide heat；Delivering to tube furnace regenerator heating chamber at the regeneration washing oil of 210 DEG C～260 DEG C through circulating pump pressurization containing benzene 0.2%～2% temperature at the bottom of regenerator tower, the washing oil being 210 DEG C～270 DEG C through temperature after heating enters regenerator and contacts with liquid phase in tower and to provide heat；The outlet temperature regulation adding thermal medium controls by controlling gas quantity, two combustor be respectively provided with gas regulating device with indirectly control in body of heater temperature below 700 DEG C；Turnover panel in chimney is automatically adjusted angle of inclination to control flame combustion and body of heater internal gas pressure according to the suction size produced because of negative pressure.
Claims (1)
1. the negative pressure heating dual chamber tube furnace for crude benzol distillation, including base (1), body of heater (2) and furnace roof (3), body of heater (2) is placed on base (1), furnace roof (3) is placed on the top of body of heater (2), it is characterized in that: also include dividing plate (21), burner (22), radiating furnace tube (23), suspension bracket (24), convection furnace (31), convection coil (32), chimney (41), turnover panel (42), observation door (51), manhole door (52), explosion proof door (53), maintenance door (54), staircase (6),
It is internal that dividing plate (21) is fixed on body of heater (2), the bottom of dividing plate (21) is fixed on the bottom surface that body of heater (2) is internal, the both sides of dividing plate (21) are separately fixed on the inwall of body of heater (2), and dividing plate (21) is separated into two combustor by internal for body of heater (2)；
Body of heater (2) is made up of lining (25) and shell (26), lining (25) is covered on the inwall of shell (26), lining (25) constitutes the inwall of body of heater (2), and shell (26) constitutes the outer wall of body of heater (2)；
Each combustor of body of heater (2) inside respectively sets at least one burner (22) and a radiating furnace tube (23), the bottom of body of heater (2) is located at by burner (22), the top of radiating furnace tube (23) is connected by the inwall of suspension bracket (24) and body of heater (2), and radiating furnace tube (23) is parallel with body of heater (2) inwall；
Convection furnace (31) is located on furnace roof (3), convection coil (32) is fixed in convection furnace (31), convection coil (32) is spiral coil, the top of radiating furnace tube (23) port after furnace roof (3) passes and bottom convection coil (32) connects, and the port at convection coil (32) top passes from the furnace wall of convection furnace (31)；
The top of convection furnace (31) and chimney (41) connect, and are provided with turnover panel (42) in chimney (41)；
Body of heater (2) bottom has observation door (51) and manhole door (52), the sidewall of body of heater (2) has explosion proof door (53) and observation door (51), and the outer wall of body of heater (2) is fixed with staircase (6)；The sidewall of convection furnace (31) has manhole door (52), and the sidewall of chimney (41) has maintenance door (54)；
Dividing plate (21) employing clay brick, at least one being incubated in viscous, fire clay, lightening casting material and heat resisting steel are made；Burner (22) quantity of each combustor is not more than 5, and the load of each burner (22) is less than 5MW；Radiating furnace tube (23) uses rustless steel to make；Lining (25) uses laying fireproof bricks, and shell (26) uses carbon steel and base (1) all to use carbon steel to make；
Turnover panel (42) uses manually, electrically or hydraulic-driven upset, and the air pressure in chimney (41) and body of heater (2) is not higher than 300Pa；Temperature in body of heater (2) is not higher than 700 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210368097.2A CN103697694B (en) | 2012-09-28 | 2012-09-28 | Negative pressure heating dual chamber tube furnace for crude benzol distillation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210368097.2A CN103697694B (en) | 2012-09-28 | 2012-09-28 | Negative pressure heating dual chamber tube furnace for crude benzol distillation |
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| CN103697694A CN103697694A (en) | 2014-04-02 |
| CN103697694B true CN103697694B (en) | 2016-12-21 |
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| CN105180653B (en) * | 2015-10-10 | 2017-06-20 | 江阴市澄源机电设备制造有限公司 | Tubular heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4342642A (en) * | 1978-05-30 | 1982-08-03 | The Lummus Company | Steam pyrolysis of hydrocarbons |
| US6178926B1 (en) * | 1999-08-31 | 2001-01-30 | Foster Wheeler Corporation | Double-fired horizontal tube heater |
| CN1219024C (en) * | 2002-12-31 | 2005-09-14 | 中国石油化工股份有限公司 | Multi radiation reqion pyrolyzer and its use |
| CN101544913B (en) * | 2009-05-04 | 2012-06-20 | 济南冶金化工设备有限公司 | Process and equipment for negative pressure benzene removal |
| CN102199070B (en) * | 2011-04-06 | 2013-06-12 | 上海同特化工科技有限公司 | Tubular furnace method pressure-reduced debenzolization and distillation process |
| CN202216562U (en) * | 2011-08-11 | 2012-05-09 | 华尔润玻璃产业股份有限公司 | Tube furnace waste heat utilization device |
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