CN211161141U - Organic solid waste sequencing batch pyrolysis system - Google Patents

Abstract

The utility model discloses an organic solid useless preface batch formula pyrolysis system, it is including hot-blast furnace body, furnace has been seted up in the hot-blast furnace body, the pyrolysis section of thick bamboo has been placed in the furnace, the pyrolysis section of thick bamboo is connected with the cooling and receives oily system, the exhanst gas outlet has been seted up to hot-blast furnace side, the exhanst gas outlet is connected with flue gas purification system, hot-blast furnace body still is connected with heating system. The utility model discloses the structure is low to the requirement such as kind, form, size, moisture content, metal content of material, and is good to the adaptability of material, and whole device has realized static pyrolysis, and the pyrolysis charcoal and the pyrolysis gas separation that organic solid useless pyrolysis produced are better, and the pyrolysis gas condensation liquefies the pyrolysis oil that gets off in solid-state material content few, and follow-up processing purification is simple, and the quality of oil is good.

Description

Organic solid waste sequencing batch pyrolysis system

The technical field is as follows:

the utility model relates to a solid useless processing technology field especially relates to an organic solid useless preface formula pyrolysis system of turning to.

Background art:

china generates a large amount of organic solid wastes, such as waste rubber, waste plastics, paint residues, medical wastes, sludge and the like every year, and the environment is often seriously damaged. The current treatment modes of organic solid wastes mainly comprise landfill, incineration and pyrolysis.

Landfill can cause pollution to water, atmosphere and soil, and simultaneously occupies a large amount of cultivated land. The incineration can recover heat while generating power, the application range is wide, but the components and the moisture of the organic solid waste change greatly along with the region and the season, and the stability cannot be guaranteed; and meanwhile, toxic substances such as dioxin and the like are generated, the exhaust emission is large, the investment is large, the equipment loss and maintenance cost is high, and the method is the bottleneck of large-scale application at present. Compared with incineration, the pyrolysis has the advantages that organic solid waste can be converted into a more easily utilized form, secondary pollution is low, and environmental friendliness is better.

Organic solid useless pyrolysis mainly adopts horizontal rotary kiln intermittent type operation pyrolysis equipment at present, and it needs to consume very long time to feed, cold sediment, slag tap, and is inefficient, for reducing cold sediment time, can spray water in the high temperature kiln in the operation usually, not only can reduce the life of equipment, also can bring very big potential safety hazard, produces material and pyrolysis gas leakage easily in feeding, ejection of compact, operation process, causes the pollution to the environment. In addition, the horizontal rotary kiln continuous pyrolysis equipment has extremely high requirements on the form, components, moisture, metal content and size of organic solid wastes, the organic solid wastes need to be subjected to complicated and strict pretreatment procedures before entering the horizontal rotary kiln continuous pyrolysis equipment, otherwise, the equipment is frequently started and stopped and blocked, serious safety accidents are easy to occur, and the equipment investment is large, so that the equipment is not popularized and applied temporarily.

The utility model has the following contents:

the utility model aims at solving current problem, and provide an organic solid useless preface batch formula pyrolysis system, it is low to requirement such as the kind of material, form, size, moisture content, metal content, good to the adaptability of material, and whole device has realized static pyrolysis, and the pyrolysis charcoal and the pyrolysis gas separation that organic solid useless pyrolysis produced are better, and the pyrolysis gas condensation liquefaction is little in the pyrolysis oil that gets off solid-state material content, and follow-up processing purification is simple, and the quality of oil is good.

The technical solution of the utility model is as follows:

the utility model provides an organic solid useless preface batch formula pyrolysis system, its is including hot-blast furnace body, furnace has been seted up in the hot-blast furnace body, a pyrolysis section of thick bamboo has been placed in the furnace, a pyrolysis section of thick bamboo is connected with the cooling and receives oily system, exhanst gas outlet has been seted up to hot-blast furnace body side, exhanst gas outlet is connected with flue gas purification system, hot-blast furnace body is connected with heating system.

Preferably, the cooling oil recovery subsystem comprises a gas collecting pipe, a first-stage spray tower, a second-stage spray tower, a deep cooler, an oil collecting tank, an oil injection pump and a cooler, wherein the gas collecting pipe is connected with a side inlet of the first-stage spray tower, a pyrolysis gas outlet of the first-stage spray tower is connected with a pyrolysis gas inlet of the second-stage spray tower through a first pipeline, a pyrolysis gas side outlet of the second-stage spray tower is connected with a pyrolysis gas inlet of the deep cooler through a second pipeline, pyrolysis oil outlets of the first-stage spray tower, the second-stage spray tower and the deep cooler are connected with an inlet of the oil collecting tank through a third pipeline, an inlet of the oil injection pump is connected with an oil outlet on the side of the oil collecting tank, an outlet of the oil injection pump is connected with an inlet of the cooler, and an outlet of the cooler is connected with spraying devices of the first-stage spray tower and the.

Preferably, the flue gas purification subsystem comprises a flue gas collecting pipe, a G-G heat exchanger, a quench tower, an alkaline tower, a demister, a fan, an activated carbon tower and a chimney, wherein the collecting pipe is connected with a high-temperature air inlet of the G-G heat exchanger, the G-G heat exchanger is connected with the quench tower through a fifth pipeline, the quench tower is connected with the alkaline tower through a sixth pipeline, the alkaline tower is connected with the demister through a seventh pipeline, the demister is connected with a secondary heating inlet of the G-G heat exchanger through an eighth pipeline, a secondary heating outlet of the G-G heat exchanger is connected with the fan through a ninth pipeline, the fan is connected with the activated carbon tower through a tenth pipeline, and the activated carbon tower is connected with the chimney through an eleventh pipeline.

Preferably, the pyrolysis cylinder is provided with an air outlet, and the air outlet is connected with the gas collecting pipe.

Preferably, the heating system comprises a burner arranged on the side surface of the hot blast stove body, the burner is connected with a natural gas pipeline and a gas fan, and the gas fan is connected with a pyrolysis gas outlet of the deep cooler through a twelfth pipeline.

Preferably, the outlet of the oil collecting tank is connected with an external transmission pipeline, and the external transmission pipeline is connected with an oil pump.

The beneficial effects of the utility model reside in that:

1. the structure of the pyrolysis cylinder and the hot blast stove of the utility model has low requirements on the type, shape, size, moisture content, metal content and the like of materials, and has good adaptability to the materials;

2. the utility model discloses a whole device has realized static pyrolysis treatment, and the pyrolysis charcoal and the pyrolysis gas separation that the pyrolysis of organic solid useless produced are better, and the pyrolysis oil that pyrolysis gas condensation liquefaction got off is few in solid-state material content, and follow-up processing purification is simple, and the quality of oil is good.

Description of the drawings:

FIG. 1 is a schematic diagram of a sequencing batch pyrolysis system for organic solid waste;

FIG. 2 is a schematic top view of the pyrolysis cylinder and the hot blast furnace body;

fig. 3 is a schematic view of the cross-sectional structure C-C of fig. 2.

In the drawings: 1. a first pyrolysis cylinder; 2. a second pyrolysis cylinder; 3. a third pyrolysis cylinder; 4. a hot blast furnace body; 5. A first valve; 6. a third valve; 7. a fifth valve; 8. a first hose; 9. a second hose; 10. a third hose; 11. a second valve; 12. a fourth valve; 13. a sixth valve; 14. a gas collecting pipe; 15. a first stage spray tower; 16. a secondary spray tower; 17. a deep cooling device; 18. an oil collecting tank; 19. an injection pump; 20. a cooler; 21. a first conduit; 22. a second conduit; 23. a third pipeline; 24. a fourth conduit; 25. an outgoing pipeline; 26. an oil pump; 27. a twelfth duct; 28. a gas fan; 29. a thirteenth pipe; 30. a seventh valve; 31. an eighth valve; 32. a ninth valve; 33. a first combustion engine; 34. a second combustion engine; 35. A third combustor; 36. a first flue gas outlet; 37. a second flue gas outlet; 38. a third flue gas outlet; 39. A tenth valve; 40. an eleventh valve; 41. a twelfth valve; 42. a natural gas pipeline; 43. a flue gas collecting pipe; 44. a G-G heat exchanger; 45. a quench tower; 46. an alkaline washing tower; 47. a demister; 48. a fifth pipeline; 49. a sixth pipeline; 50. a seventh pipe; 51. an eighth conduit; 52. a fan; 53. a chimney; 54. A ninth conduit; 55. a tenth conduit; 56. an activated carbon tower; 57. an eleventh pipe; 2-2, cooling and oil receiving system; 3-3, a flue gas purification system.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1-3, the number of the pyrolysis cylinders is three, which is as follows:

the organic solid waste sequencing batch pyrolysis system comprises a hot air furnace body 4, wherein a hearth is arranged in the hot air furnace body 4, a pyrolysis cylinder is placed in the hearth and is connected with a cooling oil receiving system 2-2, a smoke outlet is formed in the side surface of the hot air furnace body 4 and is connected with a smoke purifying system 3-3, and the hot air furnace body 4 is connected with a heating system.

Specifically, the cooling oil-collecting subsystem comprises a gas collecting pipe 14, a primary spray tower 15, a secondary spray tower 16, a deep cooler 17, an oil collecting tank 18, an oil injection pump 19 and a cooler 20, the gas collecting pipe 14 is connected with the inlet at the side of the first-stage spray tower 15, the pyrolysis gas outlet of the first-stage spray tower 15 is connected with the pyrolysis gas inlet of the second-stage spray tower 16 through a first pipeline 21, the pyrolysis gas side outlet of the secondary spray tower 16 is connected with the pyrolysis gas inlet of the deep cooler 17 through a second pipeline 22, the pyrolysis oil outlets of the first-stage spray tower 15, the second-stage spray tower 16 and the deep cooler 17 are connected with the inlet of the oil collecting tank 18 through a third pipeline 23, the inlet of the oil injection pump 19 is connected with the oil outlet at the side of the oil collecting tank 18, the outlet of the oil injection pump 19 is connected with the inlet of the cooler 20, the outlet of the cooler 20 is connected with the spraying devices of the primary spraying tower 15 and the secondary spraying tower 16 through a fourth pipeline 24.

Specifically, the flue gas purification subsystem comprises a flue gas collecting pipe 43, a G-G heat exchanger 44, a quench tower 45, a caustic tower 46, a demister 47, a fan 52, an activated carbon tower 56 and a chimney 53, wherein the flue gas collecting pipe 43 is connected with a high-temperature gas inlet of the G-G heat exchanger 44, the G-G heat exchanger 44 is connected with the quench tower 45 through a fifth pipeline 48, the quench tower 45 is connected with the caustic tower 46 through a sixth pipeline 49, the caustic tower 46 is connected with the demister 47 through a seventh pipeline 50, the demister 47 is connected with a secondary heating inlet of the G-G heat exchanger 44 through an eighth pipeline 51, a secondary heating outlet of the G-G heat exchanger 44 is connected with the fan 52 through a ninth pipeline 54, the fan 52 is connected with the activated carbon tower 56 through a tenth pipeline 55, the activated carbon tower 56 is connected to the stack 53 through an eleventh pipe 57.

Specifically, the first pyrolysis cylinder 1 is respectively and sequentially connected with a first valve 5, a first hose 8, a second valve 11 and a gas collecting pipe 14, the second pyrolysis cylinder 2 is respectively and sequentially connected with a third valve 6, a second hose 9, a fourth valve 12 and a gas collecting pipe 14, the third pyrolysis cylinder 3 is respectively and sequentially connected with a fifth valve 7, a third hose 10, a sixth valve 13 and a gas collecting pipe 14, an outlet of the oil collecting tank 18 is connected with an external conveying pipeline 25, the external conveying pipeline 25 is connected with an oil pump 26, a pyrolysis gas outlet of the deep cooler 17 is connected with a gas fan 28 through a twelfth pipeline 27, the gas fan 28 is connected with a thirteenth pipeline 29, the thirteenth pipeline 29 respectively controls supply of pyrolysis gas to the first burner 33, the second burner 34 and the third burner 35 through a seventh valve 30, an eighth valve 31 and a ninth valve 32, the natural gas pipeline 42 respectively is connected with a tenth valve 39, a gas collecting pipe 14, The eleventh and twelfth valves 40 and 41 control the supply of natural gas to the first, second and third burners 33 and 34 and 35. The first flue gas outlet 36, the second flue gas outlet 37 and the third flue gas outlet 38 of the hot blast furnace body 4 corresponding to the first pyrolysis cylinder 1, the second pyrolysis cylinder 2 and the third pyrolysis cylinder 3 are connected with the flue gas collecting pipe 43.

Specifically, as shown in fig. 2, the pyrolysis cylinder comprises a cylinder body, a cylinder cover is covered at an opening at the top of the cylinder body in a sealing manner, the cylinder body and the cylinder cover can be connected in a sealing manner through a fastening piece, and the hot blast furnace body 4 is manufactured by welding a profile frame and a plate.

Specifically, the pyrolysis cylinders are the first pyrolysis cylinder 1, the second pyrolysis cylinder 2 and the third pyrolysis cylinder 3, and the structures thereof are completely the same, but the number of the pyrolysis cylinders is not strictly limited to three, and other systems with the same processes and principles are also limited and protected by the present patent.

Specifically, in actual production, only one of the pyrolysis cylinders can work, two of the pyrolysis cylinders can work simultaneously, and a plurality of pyrolysis cylinders can work simultaneously, but the corresponding connecting valve for overheating pyrolysis gas of the non-working pyrolysis cylinder must be closed, the corresponding valve for supplying natural gas and pyrolysis gas of the burner must be closed, and the burner stops working, so that the safety in working is ensured.

The utility model discloses the theory of operation of structure does: the pyrolysis cylinder is heated by the high-temperature flue gas generated by burning the natural gas in the pipeline 42 or the pyrolysis gas in the pipeline 29 by the burner, so that the organic solid waste in the pyrolysis cylinder is heated and decomposed under the condition of 380-450 ℃ anaerobic condition to generate pyrolysis gas and carbon slag. Pyrolysis gas generated by the first pyrolysis cylinder 1 enters the gas collecting pipe 14 through the first valve 5, the first hose 8 and the second valve 11, pyrolysis gas generated by the second pyrolysis cylinder 2 enters the gas collecting pipe 14 through the third valve 6, the second hose 9 and the fourth valve 12, and pyrolysis gas generated by the third pyrolysis cylinder 3 enters the gas collecting pipe 14 through the fifth valve 7, the third hose 10 and the sixth valve 13. Pyrolysis gas in the gas collecting pipe 14 sequentially passes through a first-stage spray tower 15 and a second-stage spray tower 16, cold pyrolysis oil from a pipeline 24 rapidly cools the pyrolysis gas in the first-stage spray tower 15, the pyrolysis gas is secondarily cooled in the second-stage spray tower 16, components with the dew point temperature lower than 60 ℃ are collected, and components with the dew point temperature lower than 50 ℃ are collected by the pyrolysis gas through a deep cooler 17. The liquid component collected by the first-stage spray tower 15, the second-stage spray tower 16 and the deep cooler 17 is pyrolytic oil, the pyrolytic oil is collected into an oil collecting tank 18 through a pipeline 23, and a part of the pyrolytic oil in the oil collecting tank 18 is cooled to a cold state lower than 50 ℃ through an oil injection pump 19 and a cooler 20 and then is supplied to the first-stage spray tower 15 and the second-stage spray tower 16 through a pipeline 24; and the other part of the pyrolysis oil is sent out and stored through a pipeline 25 and an oil pump 26. The pyrolysis gas after being cooled and oil-collecting subsystem is sent to a burner for use by a gas fan 28 through a twelfth pipeline 27 and a thirteenth pipeline 29, so as to maintain the heat energy required by the pyrolysis of the organic solid waste in the pyrolysis cylinder. The flue gas from the flue gas outlet is guided into a flue gas purification subsystem through a flue gas collecting pipe 43, is primarily cooled through a G-G heat exchanger 44, is cooled and dedusted by a quench tower 45, is deacidified by an alkaline washing tower 46, is dehumidified by a demister 47, is heated through the G-G heat exchanger 44 to become unsaturated gas, is conveyed to an activated carbon tower 56 through a fan 52 to be filtered, and is finally cleanly discharged through a chimney.

The above description is only a preferred embodiment of the present invention, and all other embodiments obtained by those skilled in the art without any creative effort shall fall within the protection scope of the present invention.

Claims (6)

1. The utility model provides an organic solid useless preface batch pyrolysis system which characterized in that: the oil-gas separator is characterized by comprising a hot air furnace body (4), a hearth is arranged in the hot air furnace body (4), a pyrolysis cylinder is placed in the hearth and is connected with a cooling oil receiving system (2-2), a smoke outlet is formed in the side surface of the hot air furnace body (4), the smoke outlet is connected with a smoke purifying system (3-3), and the hot air furnace body (4) is further connected with a heating system.

2. The organic solid waste sequencing batch pyrolysis system of claim 1, wherein: the cooling oil recovery subsystem comprises a gas collecting pipe (14), a primary spray tower (15), a secondary spray tower (16), a deep cooler (17), an oil collecting tank (18), an oil injection pump (19) and a cooler (20), wherein the gas collecting pipe (14) is connected with an inlet on the side of the primary spray tower (15), a pyrolysis gas outlet of the primary spray tower (15) is connected with a pyrolysis gas inlet of the secondary spray tower (16) through a first pipeline (21), a pyrolysis gas outlet of the secondary spray tower (16) is connected with a pyrolysis gas inlet of the deep cooler (17) through a second pipeline (22), pyrolysis oil outlets of the primary spray tower (15), the secondary spray tower (16) and the deep cooler (17) are connected with an inlet of the oil collecting tank (18) through a third pipeline (23), and an inlet of the oil injection pump (19) is connected with an oil outlet on the side of the oil collecting tank (18), the outlet of the oil injection pump (19) is connected with the inlet of the cooler (20), and the outlet of the cooler (20) is connected with the spraying devices of the primary spraying tower (15) and the secondary spraying tower (16) through a fourth pipeline (24).

3. The organic solid waste sequencing batch pyrolysis system of claim 1, wherein: the flue gas purification subsystem comprises a flue gas collecting pipe (43), a G-G heat exchanger (44), a quench tower (45), an alkaline tower (46), a demister (47), a fan (52), an activated carbon tower (56) and a chimney (53), wherein the flue gas collecting pipe (43) is connected with a high-temperature air inlet of the G-G heat exchanger (44), the G-G heat exchanger (44) is connected with the quench tower (45) through a fifth pipeline (48), the quench tower (45) is connected with the alkaline tower (46) through a sixth pipeline (49), the alkaline tower (46) is connected with the demister (47) through a seventh pipeline (50), the demister (47) is connected with a secondary heating inlet of the G-G heat exchanger (44) through an eighth pipeline (51), and a secondary heating outlet of the G-G heat exchanger (44) is connected with the fan (52) through a ninth pipeline (54), the fan (52) is connected with the activated carbon tower (56) through a tenth pipeline (55), and the activated carbon tower (56) is connected with the chimney (53) through an eleventh pipeline (57).

4. The organic solid waste sequencing batch pyrolysis system of claim 2, wherein: and the pyrolysis cylinder is provided with an air outlet (101), and the air outlet (101) is connected with the gas collecting pipe (14).

5. The organic solid waste sequencing batch pyrolysis system of claim 2, wherein: the heating system comprises a burner arranged on the side surface of the hot air furnace body (4), the burner is connected with a natural gas pipeline (42) and a coal gas fan (28), and the coal gas fan (28) is connected with a pyrolysis gas outlet of the deep cooler (17) through a twelfth pipeline (27).

6. The organic solid waste sequencing batch pyrolysis system of claim 2, wherein: the outlet of the oil collecting tank (18) is connected with an external transmission pipeline (25), and the external transmission pipeline (25) is connected with an oil pump (26).

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