CN202420027U - System for waste heat utilization of tail gas in carbon black production - Google Patents
System for waste heat utilization of tail gas in carbon black production Download PDFInfo
- Publication number
- CN202420027U CN202420027U CN2011204859514U CN201120485951U CN202420027U CN 202420027 U CN202420027 U CN 202420027U CN 2011204859514 U CN2011204859514 U CN 2011204859514U CN 201120485951 U CN201120485951 U CN 201120485951U CN 202420027 U CN202420027 U CN 202420027U
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- tail gas
- water
- carbon black
- production
- waste heat
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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Abstract
The utility model belongs to the technical field of chemical engineering, and particularly relates to waste heat comprehensive utilization of tail gas of carbon black, belonging to a system for waste heat utilization of tail gas in carbon black production, which can realize energy saving and emission reduction and cyclic utilization of energy in chemical engineering production. The technical scheme of the utility model is as follows: at least one gas-water heat exchanger and one refrigerator are included, wherein the upper part of the gas-water heat exchanger is connected with a tail gas inlet pipe, and the lower part is connected with a tail gas conveying pipe; the gas-water heat exchanger and the refrigerator are connected through a hot water pipe and a warm water pipe; and the refrigerator is connected with a cold water pipe. The system uses a tail gas refrigerating system instead of the traditional cooling and dehydrating tower, and utilizes sensible heat in the cooling of tail gas as power to refrigerate water for production processes or lives, thereby obtaining cold water necessary for production processes or lives.
Description
Technical field
The utility model belongs to chemical technology field, relates in particular to the utilization of carbon black tail gas residual heat integrative, and the using waste heat from tail gas that belongs in the production of carbon black of Chemical Manufacture energy-saving and emission-reduction and energy circulation utilization utilizes system.
Background technology
In traditional production of carbon black line,, extensively adopt the mode of air preheater, online waste heat boiler and fuel oil preheating device for making full use of the energy in the production; Reclaim the sensible heat in the flue gas; Flue gas is through after the gathering system, and gas separates with carbon black and obtains the tail gas that temperature is about 220 ℃, for ease of to the storage of tail gas and improve the tail gas calorific value and be beneficial to next step utilization; As feed the tail gas station boiler or the drying machine tail gas stove is done fuel; Need be to the tail gas dehydration of further lowering the temperature, the processing mode of traditional handicraft is that tail gas pressurization back is fed the filler spray column, dewaters with big water gaging spraying cooling; Such mode of operation has been lost precious water resource on the one hand, has wasted the energy in the tail gas temperature-fall period on the other hand.
Summary of the invention
The purpose of the utility model is; Overcome the deficiency of prior art,, consider the necessary cold water requirement of comprehensive chemical enterprise again in order to make full use of the waste heat in the tail gas; Provide the using waste heat from tail gas in the production of carbon black to utilize system; This method and system replaces traditional cooled dehydrated tower with the tail gas refrigeration system, utilizes tail gas cooling sensible heat production technology or domestic water to be freezed the production technology or the necessary cold water of living for power.
For solving the problems of the technologies described above; The technical scheme of the utility model is: the using waste heat from tail gas in the production of carbon black utilizes system; Comprise at least one air-water heat exchanger and refrigeration machine; The top of said air-water heat exchanger connects the tail gas air inlet pipe, and the bottom connects exhaust pipe, is connected with warm water tube through hot-water line between air-water heat exchanger and the refrigeration machine.Reflux type is all adopted in heat exchange wherein gas-liquid two-phase, and the tail gas in the exhaust pipe gets into the tail gas storage cabinet.Heat-exchanger pump and surge tank are arranged on said warm water tube.
The described bootstrap system of the utility model comprises two air-water heat exchangers that are connected in parallel.Said refrigeration machine is connected with cold water pipe.Said refrigeration machine is connected with cooling tower through circulating cooling water pipe.On said circulating cooling water pipe, water supply pump is arranged.
Also comprise the collector pipe that is connected with the exhaust pipe of air-water heat exchanger bottom, said collector pipe is connected with collecting-tank.Condensed water in the tail gas temperature-fall period is collected and reclaims and be applied to production of carbon black, with conserve water resource at utmost.
On the said exhaust pipe outer wall fin is arranged, in order to continue that tail gas is cooled to suitable storage temperature.
Using waste heat from tail gas in the production of carbon black utilizes system to comprise air-water heat exchanger, absorption refrigeration unit and auxiliary device (like pump, cooling tower etc.) thereof.Air-water heat exchanger is a tubular heat exchanger; Tail gas is walked tube side, and water is walked shell side, and tail gas and water adverse current are got into by the heat exchanger top; Such design mainly is to consider the carbon powder dust that contains 15mg/Nm3 in the tail gas approximately, and the deposition of minimizing carbon powder dust is also conveniently cleaned the carbon black dirt that forms.Absorption Refrigerator utilizes binary solution to do working medium, and wherein low boiling component utilizes its evaporation to freeze as cold-producing medium; High boiling component is as absorbent, utilizes it to the circulation of finishing the work of the absorption of refrigerant vapour, and the operation principle of this refrigeration machine utilizes binary solution in generator, to be heated; Produce refrigerant vapour entering condenser condenses and become liquid; After the choke valve step-down, send into the evaporator evaporation refrigeration, chilled water temperature is reduced, supply with the user with cold.
When the using waste heat from tail gas in the production of carbon black utilizes system works; Come about 200-220 ℃ tail gas of autonomous bag to get into air-water heat exchanger through the blower fan pressurization; Carry out heat exchange with 80-85 ℃ water from refrigeration unit, exhaust temperature is reduced to about 100-120 ℃, and the temperature of water is increased to about 90-98 ℃ and gets into refrigerator generators heating lithium-bromide solution promotion kind of refrigeration cycle; Make 12 ℃ of cold water be cooled to 7 ℃, the unnecessary heat in the refrigeration machine is taken out of by the cooling tower circulation.Selection is cooled to 100-120 ℃ with tail gas and is based on mainly that hot water that this temperature swaps out helps the refrigeration unit maximizing efficiency most and equipment investment minimizes.
Certainly, still contain a large amount of steam and inconvenience storage in 100-120 ℃ the tail gas.For this reason; The exhaust pipe road that matches with this heat exchanger is designed to have the form (seeing accompanying drawing) of fin; To increase the heat exchange area of pipeline, utilize transportation from heat exchanger to gas holder, strengthen tail gas and be cooled to desirable gas temperature with extraneous heat exchange.In order better to handle condensed water in the tail gas temperature-fall period, be provided with the washing pond in the native system and be used for collecting the condensed water in heat exchanger and the exhaust pipe, this condensed water can be used as manufacturing technologies of carbon black water, thereby makes the intensification of production process water.
Two heat exchangers are respectively two production lines and use in the design, and are simultaneously subsequent use each other, and promptly when breaking down or cleaning for one, two public heat exchangers of production line ensure to produce to continue to carry out.Certainly, to different line the heat exchanger of varying number, size can be set, with fully to lowering the temperature for it and being guaranteed that enough the Absorption Refrigerator kind of refrigeration cycle is a basic principle.
Absorption Refrigerator in this technology is various types of Absorption Refrigerators, according to differing absorption formula refrigeration machine, improves a little and just can obtain same effect.
The beneficial effect of the utility model is: the using waste heat from tail gas in the production of carbon black of the utility model utilizes system, compares with traditional handicraft, introduces after the tail gas refrigeration system; Saved huge spray dehydrating tower in the production of carbon black line; Practice thrift water resource, obtained the essential cold water resource in chemical plant, avoided traditional big shortcoming of compression refrigeration power consumption; Realize the comprehensive utilization of tail gas sensible heat, belonged to typical energy recycle pattern.The national at present pattern of the coal tarization-tar deep processing-carbon black coproduction of promotion energetically, the cold water that obtains can be used for operations such as coking product, is typical case's representative of recycling economy, ecological chemical industry and energy-saving and emission-reduction.
To produce 40000 tons of carbon black hard line exhaust flow 38000Nm3/h per year; Tail gas is cooled to 100-12 ℃ by 200-220 ℃ can get 100 tons of 90-98 ℃ of hot water in return, reclaims heat 1718kW, produces the 40000 tons of soft line exhaust flow of carbon black 30000Nm3/h meters per year; Tail gas is cooled to 100-120 ℃ by 200-220 ℃ can get 80 tons of 90-98 ℃ of hot water in return; Reclaim heat 1374kW, lithium-bromide absorption-type refrigerating machine group efficient is about 80%, can be worth 7 ℃ of about 344 tons/h of cold water thus.
Description of drawings
Fig. 1 utilizes the system architecture sketch map for the using waste heat from tail gas in the production of carbon black of the utility model,
Fig. 2 is the cross sectional representation of exhaust pipe in the utility model.
Among the figure: 1-tail gas air inlet pipe, 2-air-water heat exchanger, 3-refrigeration machine, 4-exhaust pipe, 5-collecting-tank; The 6-warm water tube, 7-hot-water line, 8-circulating cooling water pipe, 9-cold water pipe, 10-fin; The 11-surge tank, 12-cooling tower, 13-collector pipe, 14-water supply pump, 15-heat-exchanger pump.
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further explain.
The specific embodiment
According to illustrated in figures 1 and 2; Using waste heat from tail gas in the production of carbon black utilizes system; Comprise two air-water heat exchangers 2 and a refrigeration machine 3 of being connected in parallel, the top of said air-water heat exchanger 2 connects tail gas air inlet pipe 1, and the bottom connects exhaust pipe 4; Be connected with warm water tube 6 through hot-water line 7 between air-water heat exchanger 2 and the refrigeration machine 3, heat-exchanger pump 15 and surge tank 11 are arranged on said warm water tube 6.
Refrigeration machine 3 is connected with cold water pipe 9.Said refrigeration machine 3 is connected with cooling tower 12 through circulating cooling water pipe 8.On said circulating cooling water pipe 8, water supply pump 14 is arranged.Also comprise the collector pipe 13 that is connected with the exhaust pipe 4 of air-water heat exchanger 2 bottoms, collector pipe 13 is connected with collecting-tank 5.On exhaust pipe 4 outer walls fin 10 is arranged.
Claims (7)
1. the using waste heat from tail gas in the production of carbon black utilizes system; It is characterized in that: comprise at least one air-water heat exchanger and refrigeration machine; The top of said air-water heat exchanger connects the tail gas air inlet pipe; The bottom connects exhaust pipe, is connected with warm water tube through hot-water line between air-water heat exchanger and the refrigeration machine, and refrigeration machine is connected with cold water pipe.
2. the using waste heat from tail gas in the production of carbon black according to claim 1 utilizes system, it is characterized in that: described bootstrap system comprises two air-water heat exchangers that are connected in parallel.
3. the using waste heat from tail gas in the production of carbon black according to claim 1 and 2 utilizes system, it is characterized in that: heat-exchanger pump and surge tank are arranged on said warm water tube.
4. the using waste heat from tail gas in the production of carbon black according to claim 1 and 2 utilizes system, it is characterized in that: said refrigeration machine is connected with cooling tower through circulating cooling water pipe.
5. the using waste heat from tail gas in the production of carbon black according to claim 4 utilizes system, it is characterized in that: on said circulating cooling water pipe, water supply pump is arranged.
6. the using waste heat from tail gas in the production of carbon black according to claim 1 and 2 utilizes system, it is characterized in that: also comprise the collector pipe that is connected with the exhaust pipe of air-water heat exchanger bottom, said collector pipe is connected with collecting-tank.
7. the using waste heat from tail gas in the production of carbon black according to claim 1 and 2 utilizes system, it is characterized in that: on the said exhaust pipe outer wall fin is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204859514U CN202420027U (en) | 2011-11-30 | 2011-11-30 | System for waste heat utilization of tail gas in carbon black production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204859514U CN202420027U (en) | 2011-11-30 | 2011-11-30 | System for waste heat utilization of tail gas in carbon black production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202420027U true CN202420027U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204859514U Expired - Lifetime CN202420027U (en) | 2011-11-30 | 2011-11-30 | System for waste heat utilization of tail gas in carbon black production |
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| CN (1) | CN202420027U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425881A (en) * | 2011-11-30 | 2012-04-25 | 金能科技有限责任公司 | Waste heat utilization method and waste heat utilization system of tail gas in production of carbon black |
-
2011
- 2011-11-30 CN CN2011204859514U patent/CN202420027U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425881A (en) * | 2011-11-30 | 2012-04-25 | 金能科技有限责任公司 | Waste heat utilization method and waste heat utilization system of tail gas in production of carbon black |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |