CN204824726U - Coal low temperature pyrolysis system - Google Patents
Coal low temperature pyrolysis system Download PDFInfo
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- CN204824726U CN204824726U CN201520457221.1U CN201520457221U CN204824726U CN 204824726 U CN204824726 U CN 204824726U CN 201520457221 U CN201520457221 U CN 201520457221U CN 204824726 U CN204824726 U CN 204824726U
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Abstract
The utility model belongs to the technical field of the chemical industry, a coal low temperature pyrolysis system is related to. The utility model discloses a raw coal buffering storehouse, preliminary auger dolly, dry rotary furnace, perpendicular scratch board conveyor, dry coal buffering warehouse, outer hot type gyration gas retort, heated air circulation system, cooling rotary furnace. The utility model discloses the productivity is big, and heat transmission effect is good in the furnace body rotation, high productivity, can use the following foam coal of 30mm, broken coal, the raw materials is easy, the source extensively, tar yield is high, and the temperature is controllable, the intensification is fast, reaches more than 90% of ge jin dry distillation, and the tar light oil component is up to 55% of productivity in the tar.
Description
Technical field
The utility model belongs to chemical technology field, relates to a kind of Coal at Low Temperature distillation system.
Background technology
Coal at Low Temperature destructive distillation under the condition of isolated air and oxygen, coal is heated to 500 ~ 600 DEG C to carry out pyrolysis, changes into a kind of cleaning coal utilization technology of semicoke, burnt oil and gas.The sub-prime it achieving coal utilizes, significantly improve resource utilization, effectively achieve the object of coal resources comprehensive utilization, Optimum utilization, maximizing the benefits, for transforming mode of economic growth, the state of the art improving comprehensive utilization of resources and environment protection has very major and immediate significance; Pyrolysis of coal started from for 20 beginnings of the century, and production object originally produces paraffin oil and solid smokeless fuel, developed by the technique produced for the purpose of engine liquid fluid fuel subsequently, secondary reformer as strange in Shandong, three sections of stoves; .The 1950's, along with the development & application of oil, Sweet natural gas in world wide, the pyrolysis process tempo of coal slows down and even pauses.But in the country that some coal resources are abundant, all the time the research and development to pyrolysis of coal (pyrolysis) are not stopped, in order to be produced liquid product and the aromatic hydroxy compound of higher yields by fat coal, the research and development of people to pyrolysis of coal (pyrolysis) technique are paid attention to again, some novel procesies continue and develop, the target of these novel procesies improves the liquid yield of coal, the method generally used is the speed of quickening pyrolytic reaction or carries out pyrolytic reaction under the condition of facing hydrogen, novel process notes the utilization ratio improving coal simultaneously, the thermo-efficiency of raising process and emphasis environment protection etc.
The unit of studies in China coal pyrolysis technology is numerous, multistage rotary kiln (MRF) pyrolytic process that more typical technology also has Beijing Coal Chemical Industry branch to develop, the multiple-supplying technique of Jinan Boiler Plant, the net belt type brown coal cryodrying modification upgrading technology of Beijing Collins's Danone source technology development company, the brown coal low-temperature pyrolysis modification technology of Anshan Thermal Energy Inst., the brown coal fluidized bed low temperature dry distillation modification technology etc. of Xi'an hot working research institute, nearly ten years, rapid in China's development with the low-temperature pyrolysis Technology that blue charcoal is produced as representative, blue charcoal production capacity reaches 5,000 ten thousand tons, on its Technology equipment, more than 95% enterprise all adopts internal thermal upright stove distillation process, the variety of problems that internal thermal upright carbonization furnace exposes in its actual moving process, reflect that it still exists the deficiency of following several respects:
1) adopt water seal to discharge of the coke mode, red-hot coke directly contacts with water, produces a large amount of waste gas, waste water; 2) heat adopting coal gas and air combustion to produce directly is dried from scraping the semicoke scraped burnt groove, not only wastes part of coal G&W resource, and gas-fired simultaneously, directly winding-up semicoke also can produce a large amount of waste gas and dust; 3) adopt gaseous heat-carrier mode destructive distillation raw coal, the lumpiness of raw coal must be ensured, otherwise hot gas in stove can be allowed cannot to pass through coal seam smoothly, cause the fine coal of a large amount of high-quality, young coal can not get trans-utilization, finally can only directly burn, waste is serious, and contaminate environment.
Utility model content
The purpose of this utility model provides a kind of Coal at Low Temperature distillation system for prior art Problems existing.
A kind of Coal at Low Temperature distillation system, comprise raw coal surge bunker, reinforced spiral dolly, dry rotary kiln, vertical scraper conveyer, moisture-free coal buffering warehouse, external-heating revolving gas retort, hot air circulating system, cool back converter, described raw coal surge bunker discharge port is connected to the opening for feed of dry rotary kiln by reinforced spiral dolly, the discharge port of dry rotary kiln is connected to moisture-free coal buffering warehouse by vertical scraper conveyer, moisture-free coal buffering warehouse is connected to the opening for feed of external-heating revolving gas retort by reinforced spiral dolly, described hot air circulating system is arranged on this external-heating revolving gas retort, external-heating revolving gas retort discharge port is connected to by reinforced spiral dolly and cools back converter,
Described hot air circulating system comprises the first hotblast stove and the second hotblast stove, and described first hotblast stove is connected with the external heating jacket of external-heating revolving gas retort, and the second hotblast stove is connected with the interior heating tubulation of external-heating revolving gas retort;
The carrier gas inlet of described dry rotary kiln is provided with carrier gas heater;
The offgas outlet of described dry rotary kiln is provided with drying, dedusting device;
Belt weighing balance is provided with between described raw coal surge bunker and reinforced spiral dolly.
The utility model has following beneficial effect:
1, single covering device production capacity is large, and body of heater rotation heat-transfer effect is good, and productivity is high;
2, can use below 30mm foam coal, broken coal, raw material is easy to get, wide material sources;
3, tar yield is high, temperature-controllable, quick heating, reaches more than 90% of Ge Jin destructive distillation, and in tar, tar light oil component is up to 55% of productive rate;
4, pyrolysis coal gas and semicoke quality better, because the effective constituent such as methane, hydrogen, carbon monoxide in isolated air heating coal gas is high, calorific value reaches 4800kcal/Nm
3above, can extract the raw material of hydrogen hydrogenation of tar as low cost, because in pyrolysis coal gas, inclusion-free component is mixed into, the system's work-loads such as coal gas total amount is few compared with other technique, the separation of follow-up oil gas dirt are relatively low;
5, adopt continuous indirect heat exchange quenching, epigranular, stable in properties, upgraded coal is substantially not moisture;
6, production process energy-conserving and environment-protective, recycle the free-water recoverable that the water yield is little, thermo-efficiency is high, drying goes out, and hot semicoke and water indirect heat exchange, do not produce waste water;
7, heating adopts Recycle design thermo-efficiency high, solve the problem of environmental pollution burning and bring, and also greatly achieves the recycle of resource;
8, simple, easy to operate, the safety and stability of system architecture, reliable.
Accompanying drawing explanation
Fig. 1 is system interface chart of the present utility model.
Embodiment
A kind of Coal at Low Temperature distillation system as shown in Figure 1, comprise raw coal surge bunker 1, reinforced spiral dolly 2, dry rotary kiln 3, vertical scraper conveyer 4, moisture-free coal buffering warehouse 5, external-heating revolving gas retort 6, hot air circulating system 7, cool back converter 8, described raw coal surge bunker 1 discharge port is connected to the opening for feed of dry rotary kiln 3 by reinforced spiral dolly 2, the discharge port of dry rotary kiln 3 is connected to moisture-free coal buffering warehouse 5 by vertical scraper conveyer 4, moisture-free coal buffering warehouse 5 is connected to the opening for feed of external-heating revolving gas retort 6 by reinforced spiral dolly 2, described hot air circulating system 7 is arranged on this external-heating revolving gas retort 6, external-heating revolving gas retort 6 discharge port is connected to by reinforced spiral dolly 2 and cools back converter 8, described hot air circulating system 7 comprises the first hotblast stove 9 and the second hotblast stove 10, and described first hotblast stove 9 is connected with the external heating jacket of external-heating revolving gas retort 6, and the second hotblast stove 10 is connected with the interior heating tubulation of external-heating revolving gas retort 6, the carrier gas inlet of described dry rotary kiln 3 is provided with carrier gas heater 11, the offgas outlet of described dry rotary kiln 3 is provided with drying, dedusting device 12, belt weighing balance 13 is provided with between described raw coal surge bunker 1 and reinforced spiral dolly 2.
During work, feed coal enters raw coal surge bunker 1, coal-supplying amount is controlled by the rotary discharge valve controlled bottom raw coal surge bunker 1, coal-supplying amount is measured by belt weighing balance 13, feed coal is delivered to dry rotary kiln 3 by reinforced spiral dolly 2, feed coal is in the process by dry rotary kiln 3 opening for feed, carrier gas heater 11 enters in dry rotary kiln 3 after being mixed with feed coal by the nitrogen after heating, feed coal steam multitube in dry rotary kiln 3 fully overturns contact, the surface temperature control of steam multitube is at 180 DEG C, the rotating speed controlling dry rotary kiln 3 adjusts the time of drying of raw coal simultaneously, to mechanical water most in feed coal, fissure water and partial crystallization water remove to the greatest extent, drain into air after mixture drying fly-ash separator 12 dedusting of water vapour, nitrogen and coal dust that dry rotary kiln 3 offgas outlet is separated out, dried feed coal is delivered to moisture-free coal buffering warehouse 5 by vertical scraper conveyer 4 and stores.
Feed coal in moisture-free coal buffering warehouse 5 is delivered to external-heating revolving gas retort by reinforced spiral dolly 2, external-heating revolving gas retort 6 adopts stove to arrange in heating jacket, stove outward and arranges that the mode of heating tubulation carries out low-temperature pyrolysis by indirect heat exchange to feed coal in it, and the first hotblast stove 9 and the second hotblast stove 10 provide high-temperature flue gas to heating jacket and the energy supply of heating tubulation; Coal of obtaining through refining after destructive distillation is delivered to by reinforced spiral dolly 2 and cools back converter 8, is transported to and obtains through refining Coal Stack Yard after cooling.
Claims (5)
1. a Coal at Low Temperature distillation system, it is characterized in that: comprise raw coal surge bunker (1), reinforced spiral dolly (2), dry rotary kiln (3), vertical scraper conveyer (4), moisture-free coal buffering warehouse (5), external-heating revolving gas retort (6), hot air circulating system (7), cool back converter (8), described raw coal surge bunker (1) discharge port is connected to the opening for feed of dry rotary kiln (3) by reinforced spiral dolly (2), the discharge port of dry rotary kiln (3) is connected to moisture-free coal buffering warehouse (5) by vertical scraper conveyer (4), moisture-free coal buffering warehouse (5) is connected to the opening for feed of external-heating revolving gas retort (6) by reinforced spiral dolly (2), described hot air circulating system (7) is arranged on this external-heating revolving gas retort (6), external-heating revolving gas retort (6) discharge port is connected to by reinforced spiral dolly (2) and cools back converter (8).
2. a kind of Coal at Low Temperature distillation system as claimed in claim 1, it is characterized in that: described hot air circulating system (7) comprises the first hotblast stove (9) and the second hotblast stove (10), described first hotblast stove (9) is connected with the external heating jacket of external-heating revolving gas retort (6), and the second hotblast stove (10) is connected with the interior heating tubulation of external-heating revolving gas retort (6).
3. a kind of Coal at Low Temperature distillation system as claimed in claim 1, is characterized in that: the carrier gas inlet of described dry rotary kiln (3) is provided with carrier gas heater (11).
4. a kind of Coal at Low Temperature distillation system as claimed in claim 1, is characterized in that: the offgas outlet of described dry rotary kiln (3) is provided with drying, dedusting device (12).
5. a kind of Coal at Low Temperature distillation system as claimed in claim 1, is characterized in that: be provided with belt weighing balance (13) between described raw coal surge bunker (1) and reinforced spiral dolly (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457221.1U CN204824726U (en) | 2015-06-30 | 2015-06-30 | Coal low temperature pyrolysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457221.1U CN204824726U (en) | 2015-06-30 | 2015-06-30 | Coal low temperature pyrolysis system |
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| Publication Number | Publication Date |
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| CN204824726U true CN204824726U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520457221.1U Expired - Fee Related CN204824726U (en) | 2015-06-30 | 2015-06-30 | Coal low temperature pyrolysis system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107163953A (en) * | 2017-05-02 | 2017-09-15 | 吴植仁 | A kind of biomass and carbon containing thermal decomposition of organic wastes rotary furnace and thermal decomposition product recovery system |
| CN107353910A (en) * | 2017-07-19 | 2017-11-17 | 榆林学院 | A kind of two-part fine coal distillation system |
| CN107502381A (en) * | 2017-09-26 | 2017-12-22 | 邓玉平 | A kind of tar slag pyrolysis installation |
| CN109135778A (en) * | 2018-09-06 | 2019-01-04 | 西安三瑞实业有限公司 | A kind of reaction control system and method for external heat type rotary furnace destructive distillation device |
| CN109161392A (en) * | 2018-09-19 | 2019-01-08 | 西安三瑞实业有限公司 | A kind of external heat type rotary furnace coal pyrolysis device and method with internal dedusting |
-
2015
- 2015-06-30 CN CN201520457221.1U patent/CN204824726U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107163953A (en) * | 2017-05-02 | 2017-09-15 | 吴植仁 | A kind of biomass and carbon containing thermal decomposition of organic wastes rotary furnace and thermal decomposition product recovery system |
| CN107353910A (en) * | 2017-07-19 | 2017-11-17 | 榆林学院 | A kind of two-part fine coal distillation system |
| CN107502381A (en) * | 2017-09-26 | 2017-12-22 | 邓玉平 | A kind of tar slag pyrolysis installation |
| CN109135778A (en) * | 2018-09-06 | 2019-01-04 | 西安三瑞实业有限公司 | A kind of reaction control system and method for external heat type rotary furnace destructive distillation device |
| CN109135778B (en) * | 2018-09-06 | 2020-08-28 | 西安三瑞实业有限公司 | Reaction control system and method for external heating type rotary furnace dry distillation device |
| CN109161392A (en) * | 2018-09-19 | 2019-01-08 | 西安三瑞实业有限公司 | A kind of external heat type rotary furnace coal pyrolysis device and method with internal dedusting |
| CN109161392B (en) * | 2018-09-19 | 2020-08-11 | 西安三瑞实业有限公司 | External heating type rotary furnace coal pyrolysis device with internal dust removal function and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20160630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |