CN107177363B - Coke oven flue waste gas waste heat recovery device capable of preventing coking - Google Patents
Coke oven flue waste gas waste heat recovery device capable of preventing coking Download PDFInfo
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- CN107177363B CN107177363B CN201710562040.9A CN201710562040A CN107177363B CN 107177363 B CN107177363 B CN 107177363B CN 201710562040 A CN201710562040 A CN 201710562040A CN 107177363 B CN107177363 B CN 107177363B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention provides a coke oven flue waste gas waste heat recovery device capable of preventing coking, which comprises a waste heat recovery temperature control section (1), a depressurization decoking section (2) and a waste heat efficient recovery section (3) which are connected in sequence; the waste heat recovery temperature control section (1) is vertically arranged, the inner diameter of the waste heat recovery temperature control section is unchanged, a second medium pipeline (5) is arranged on the side wall of the waste heat recovery temperature control section, and a first temperature sensor is arranged at the outlet of the waste heat recovery temperature control section; the pressure reducing and decoking section (2) is horizontally arranged, the inner diameter of the pressure reducing and decoking section is gradually increased from left to right, the bottom of the pressure reducing and decoking section (2) is V-shaped, a first medium pipeline (4) is arranged at the bottom, a coke collecting groove (8) is arranged at the lowest position, and a macroporous metal net is arranged at the top of the coke collecting groove (8); the waste heat efficient recovery section (3) is vertically arranged, the inner diameter of the waste heat efficient recovery section is unchanged, and a third medium pipeline (6) is arranged on the side wall of the waste heat efficient recovery section; the inner diameters of the waste heat recovery temperature control section (1) and the waste heat efficient recovery section (3) are the same; a temperature control section (7) which is obliquely arranged is arranged between the depressurization decoking section (2) and the waste heat efficient recovery section (3); a second temperature sensor and a heating device (9) are arranged in the temperature control section (7). The waste heat recovery device provided by the invention has the advantages of simple structure, good anti-coking effect and high waste heat recovery efficiency.
Description
Technical Field
The invention belongs to the field of coke oven equipment, and particularly relates to a coke oven flue waste gas waste heat recovery device capable of preventing coking.
Background
The coke oven can carry out high-temperature carbonization treatment on coal, and can efficiently convert the coal into products such as coke, coke oven gas, coal tar, crude benzene and the like, thereby being an efficient energy conversion kiln. In the heat of the coke oven expenditure, the heat of the crude gas at 650-700 ℃ is about 36%, and the recovery and utilization value is extremely high. At present, a cooling treatment process is generally adopted to realize industrial application of raw gas, and the traditional process is as follows: spraying a large amount of circulating ammonia water at 70-75 ℃ to the high-temperature raw gas to cool the high-temperature raw gas, so as to realize waste heat recovery, however, the waste of heat brought out by the high-temperature raw gas due to the large amount of evaporation of the circulating ammonia water is caused.
In the 80 s of the 20 th century, most coking plants in japan have used conduction oil for riser recovery of raw gas carry-over heat: they make the riser into a jacket pipe, and the heat transfer oil indirectly exchanges heat with the high temperature raw gas through the jacket pipe, so that the heated high temperature heat transfer oil can be used for various purposes, such as ammonia distillation, coal tar distillation, drying and charging coal, etc. Later, the economic steel in China has been subjected to similar tests on a five-hole riser; many enterprises in China such as Wu Steel, ma Steel, saddle Steel, lian Steel, beijing coking plant, shenyang gas two plant, yi-Tien-iron, pingshan coking plant and the like use a water vaporization cooling technology to recover the heat in a riser; in addition, enterprises adopt a method of indirectly exchanging heat with high-temperature raw gas by taking nitrogen as a medium.
The structure of the traditional coke oven riser raw gas waste heat recovery heat device is an overall inner, middle and outer three-layer basic structure. The inner layer is a cylinder made of high-temperature-resistant and corrosion-resistant alloy steel, and raw gas flows through the cylinder from bottom to top. The middle is a core heat transfer layer, a high-temperature-resistant solid medium layer with high heat conduction capability and a certain thickness is closely attached to the outer wall of the inner cylinder, a heat transfer pipe passes through the solid medium layer and is closely contacted with the solid medium layer, a heat taking medium flows through the heat transfer pipe, the heat taking medium absorbs the heat release quantity of raw gas in the inner cylinder in the flowing process, and the temperature is increased in the flowing process from bottom to top. The heat transfer pipe or the spiral ascending spiral is arranged in the solid medium layer or is vertically arranged on the solid medium layer from bottom to top, and the solid medium layer needs to cover the outer surface of the whole heat transfer pipe; the outer layer is a heat preservation protective layer, the metal cylinder body is made of metal, a heat preservation material is stuck on the inner wall surface, the heat preservation and protection effects on the inner cylinder and the middle core heat transfer layer are achieved, heat loss is reduced, and the heat preservation protective layer is free from impact.
However, the prior art coke oven riser raw gas waste heat recovery heat device has more or less the following problems: the heat transfer process has unreasonable structural design, unsmooth circulation and low heat exchange efficiency, and tar adhesion on the side wall surface of raw gas causes blockage of a raw gas channel, coking of heat conduction oil causes blockage of a heat conduction oil channel, and is easy to corrode by media and the like or can not effectively solve the problems of thermal expansion and cold contraction in the starting, stopping and running processes, so that the method is difficult to implement successfully or has a satisfactory effect.
Disclosure of Invention
Technical problems: in order to solve the defects of the prior art, the invention provides a coke oven flue waste gas waste heat recovery device for preventing coking.
The technical scheme is as follows: the invention provides a coke oven flue waste gas waste heat recovery device capable of preventing coking, which comprises a waste heat recovery temperature control section (1), a depressurization decoking section (2) and a waste heat efficient recovery section (3) which are connected in sequence; the waste heat recovery temperature control section (1) is vertically arranged, the inner diameter of the waste heat recovery temperature control section is unchanged, a second medium pipeline (5) is arranged on the side wall of the waste heat recovery temperature control section, and a first temperature sensor is arranged at the outlet of the waste heat recovery temperature control section; the pressure reducing and decoking section (2) is horizontally arranged, the inner diameter of the pressure reducing and decoking section is gradually increased from left to right, the bottom of the pressure reducing and decoking section (2) is V-shaped, a first medium pipeline (4) is arranged at the bottom, a coke collecting groove (8) is arranged at the lowest position, and a macroporous metal net is arranged at the top of the coke collecting groove (8); the waste heat efficient recovery section (3) is vertically arranged, the inner diameter of the waste heat efficient recovery section is unchanged, and a third medium pipeline (6) is arranged on the side wall of the waste heat efficient recovery section; the inner diameters of the waste heat recovery temperature control section (1) and the waste heat efficient recovery section (3) are the same; a temperature control section (7) which is obliquely arranged is arranged between the depressurization decoking section (2) and the waste heat efficient recovery section (3); a second temperature sensor and a heating device (9) are arranged in the temperature control section (7).
The side wall of the waste heat recovery temperature control section (1) is sequentially provided with a temperature control section inner shell (11), a temperature control Duan Daore medium layer (12), a temperature control Duan Gere layer (13) and a temperature control Duan Waike body (14) from inside to outside; the temperature control Duan Nake body (11) is made of a low-efficiency heat conduction composite material, and the low-efficiency heat conduction composite material is at least made of the following components in parts by weight: 100 parts of iron, 14.1-15.3 parts of chromium, 4.21-4.38 parts of nickel, 0.76-0.91 part of silicon, 0.45-0.58 part of carbon, 0.67-0.81 part of manganese, 0.25-0.38 part of molybdenum and 1-2 parts of nano copper.
The depressurization decoking section (2) is made of a medium-effect heat-conducting composite material, and the medium-effect heat-conducting composite material is at least made of the following components in parts by weight: 100 parts of iron, 14.1-15.3 parts of chromium, 4.21-4.38 parts of nickel, 0.76-0.91 part of silicon, 0.45-0.58 part of carbon, 0.67-0.81 part of manganese, 0.25-0.38 part of molybdenum, 0.4-0.8 part of titanium nitride and 1-2 parts of carbon nano tube.
The side wall of the waste heat efficient recovery section (3) is sequentially provided with an efficient recovery section inner shell (31), an efficient recovery section heat conducting medium layer (32), an efficient recovery section heat insulating layer (33) and an efficient recovery section outer shell (34) from inside to outside; the inner side wall of the inner shell (31) of the high-efficiency recovery section is provided with fins (35); a nail head (36) is arranged between the outer side wall of the inner shell (31) of the high-efficiency recovery section and the inner side wall of the heat insulation layer (33) of the high-efficiency recovery section; the efficient recycling section inner shell (31) is made of an efficient heat-conducting composite material, and the efficient heat-conducting composite material is at least made of the following components in parts by weight: 100 parts of iron, 14.1-15.3 parts of chromium, 4.21-4.38 parts of nickel, 0.76-0.91 part of silicon, 0.45-0.58 part of carbon, 0.67-0.81 part of manganese, 0.25-0.38 part of molybdenum, 0.4-0.8 part of titanium nitride, 1-2 parts of carbon nano tube and 1-2 parts of nano copper.
The invention also provides a high-efficiency heat-conducting composite material for the coke oven flue waste gas waste heat recovery device, which is prepared from the following components in parts by weight: 100 parts of iron, 14.1-15.3 parts of chromium, 4.21-4.38 parts of nickel, 0.76-0.91 part of silicon, 0.45-0.58 part of carbon, 0.67-0.81 part of manganese, 0.25-0.38 part of molybdenum, 0.4-0.8 part of titanium nitride, 1-2 parts of carbon nano tube and 1-2 parts of nano copper.
The invention also provides a medium-efficiency heat-conducting composite material for the coke oven flue waste gas waste heat recovery device, which is prepared from the following components in parts by weight: 100 parts of iron, 14.1-15.3 parts of chromium, 4.21-4.38 parts of nickel, 0.76-0.91 part of silicon, 0.45-0.58 part of carbon, 0.67-0.81 part of manganese, 0.25-0.38 part of molybdenum, 0.4-0.8 part of titanium nitride and 1-2 parts of carbon nano tube.
The invention also provides a low-efficiency heat-conducting composite material for the coke oven flue waste gas waste heat recovery device, which comprises 100 parts of iron, 14.1-15.3 parts of chromium, 4.21-4.38 parts of nickel, 0.76-0.91 part of silicon, 0.45-0.58 part of carbon, 0.67-0.81 part of manganese, 0.25-0.38 part of molybdenum and 1-2 parts of nano copper.
The beneficial effects are that: the waste heat recovery device provided by the invention has the advantages of simple structure, good anti-coking effect and high waste heat recovery efficiency.
Drawings
Fig. 1 is a schematic structural view of a coke oven flue gas waste heat recovery device for preventing coking.
Fig. 2 is a partial enlarged view of the waste heat recovery temperature control section.
Fig. 3 is a partial enlarged view of the waste heat efficient recovery section.
Detailed Description
The coke oven flue gas waste heat recovery device for preventing coking is further described below.
Example 1
The coke oven flue waste gas waste heat recovery device for preventing coking comprises a waste heat recovery temperature control section (1), a depressurization decoking section (2) and a waste heat efficient recovery section (3) which are connected in sequence; the waste heat recovery temperature control section (1) is vertically arranged, the inner diameter of the waste heat recovery temperature control section is unchanged, a second medium pipeline (5) is arranged on the side wall of the waste heat recovery temperature control section, and a first temperature sensor is arranged at the outlet of the waste heat recovery temperature control section; the pressure reducing and decoking section (2) is horizontally arranged, the inner diameter of the pressure reducing and decoking section is gradually increased from left to right, the bottom of the pressure reducing and decoking section (2) is V-shaped, a first medium pipeline (4) is arranged at the bottom, a coke collecting groove (8) is arranged at the lowest position, and a macroporous metal net is arranged at the top of the coke collecting groove (8); the waste heat efficient recovery section (3) is vertically arranged, the inner diameter of the waste heat efficient recovery section is unchanged, and a third medium pipeline (6) is arranged on the side wall of the waste heat efficient recovery section; the inner diameters of the waste heat recovery temperature control section (1) and the waste heat efficient recovery section (3) are the same; a temperature control section (7) which is obliquely arranged is arranged between the depressurization decoking section (2) and the waste heat efficient recovery section (3); a second temperature sensor and a heating device (9) are arranged in the temperature control section (7).
The side wall of the waste heat recovery temperature control section (1) is sequentially provided with a temperature control section inner shell (11), a temperature control Duan Daore medium layer (12), a temperature control Duan Gere layer (13) and a temperature control Duan Waike body (14) from inside to outside; the temperature control Duan Nake body (11) is made of a low-efficiency heat conduction composite material, and the low-efficiency heat conduction composite material is at least made of the following components in parts by weight: 100 parts of iron, 14.6 parts of chromium, 4.28 parts of nickel, 0.86 part of silicon, 0.50 part of carbon, 0.71 part of manganese, 0.30 part of molybdenum and 1.5 parts of nano copper.
The depressurization decoking section (2) is made of a medium-effect heat-conducting composite material, and the medium-effect heat-conducting composite material is at least made of the following components in parts by weight: 100 parts of iron, 14.6 parts of chromium, 4.28 parts of nickel, 0.86 part of silicon, 0.50 part of carbon, 0.71 part of manganese, 0.30 part of molybdenum, 0.6 part of titanium nitride and 1.5 parts of carbon nano tube.
The side wall of the waste heat efficient recovery section (3) is sequentially provided with an efficient recovery section inner shell (31), an efficient recovery section heat conducting medium layer (32), an efficient recovery section heat insulating layer (33) and an efficient recovery section outer shell (34) from inside to outside; the inner side wall of the inner shell (31) of the high-efficiency recovery section is provided with fins (35); a nail head (36) is arranged between the outer side wall of the inner shell (31) of the high-efficiency recovery section and the inner side wall of the heat insulation layer (33) of the high-efficiency recovery section; the efficient recycling section inner shell (31) is made of an efficient heat-conducting composite material, and the efficient heat-conducting composite material is at least made of the following components in parts by weight: 100 parts of iron, 14.6 parts of chromium, 4.28 parts of nickel, 0.86 part of silicon, 0.50 part of carbon, 0.71 part of manganese, 0.30 part of molybdenum, 0.6 part of titanium nitride, 1.5 parts of carbon nano tube and 1.5 parts of nano copper.
The working principle of the device is as follows: (1) Because the shape of the heating superheating section is set, the flue gas is pressurized in the pressurizing superheating section and the waste heat is recovered, so that the temperature change of the flue gas is small, and part of the waste heat is recovered, thereby avoiding coking; (2) Due to the shape of the depressurization and decoking section, the flue gas is depressurized in the section and part of waste heat is recovered at the same time, so that the temperature is quickly reduced, and a large amount of coking can be formed on the metal mesh at the bottom, thereby playing a decoking role; on the other hand, a temperature detection and heating device is arranged at the outlet to avoid coking of the outlet; (3) The flue gas exchanges heat with the medium in the waste heat efficient recovery section, so that the medium is preheated, and coking is difficult to occur despite the temperature reduction after decoking.
Example 2
Substantially the same as in example 1, the only difference is that:
the low-efficiency heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.4 parts of chromium, 4.26 parts of nickel, 0.88 part of silicon, 0.48 part of carbon, 0.73 part of manganese, 0.32 part of molybdenum and 1.3 parts of nano copper;
the medium-effect heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.4 parts of chromium, 4.26 parts of nickel, 0.88 part of silicon, 0.48 part of carbon, 0.73 part of manganese, 0.32 part of molybdenum, 0.5 part of titanium nitride and 1.3 parts of carbon nano tube;
the high-efficiency heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.4 parts of chromium, 4.26 parts of nickel, 0.88 part of silicon, 0.48 part of carbon, 0.73 part of manganese, 0.32 part of molybdenum, 0.5 part of titanium nitride, 1.3 parts of carbon nano-tube and 1.7 parts of nano-copper.
Example 3
Substantially the same as in example 1, the only difference is that:
the low-efficiency heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.8 parts of chromium, 4.30 parts of nickel, 0.84 part of silicon, 0.52 part of carbon, 0.69 part of manganese, 0.28 part of molybdenum and 1.7 part of nano copper;
the medium-effect heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.8 parts of chromium, 4.30 parts of nickel, 0.84 part of silicon, 0.52 part of carbon, 0.69 part of manganese, 0.28 part of molybdenum, 0.7 part of titanium nitride and 1.7 parts of carbon nano tube;
the high-efficiency heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.8 parts of chromium, 4.30 parts of nickel, 0.84 part of silicon, 0.52 part of carbon, 0.69 part of manganese, 0.28 part of molybdenum, 0.7 part of titanium nitride, 1.7 parts of carbon nano-tube and 1.3 parts of nano-copper.
Example 4
Substantially the same as in example 1, the only difference is that:
the low-efficiency heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.1 parts of chromium, 4.21 parts of nickel, 0.91 part of silicon, 0.45 part of carbon, 0.81 part of manganese, 0.25 part of molybdenum and 2 parts of nano copper;
the medium-effect heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.1 parts of chromium, 4.21 parts of nickel, 0.91 part of silicon, 0.45 part of carbon, 0.81 part of manganese, 0.25 part of molybdenum, 0.4 part of titanium nitride and 1 part of carbon nano tube;
the high-efficiency heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.1 parts of chromium, 4.21 parts of nickel, 0.91 part of silicon, 0.45 part of carbon, 0.81 part of manganese, 0.25 part of molybdenum, 0.4 part of titanium nitride, 1 part of carbon nano tube and 2 parts of nano copper.
Example 5
Substantially the same as in example 1, the only difference is that:
the low-efficiency heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 15.3 parts of chromium, 4.38 parts of nickel, 0.76 part of silicon, 0.58 part of carbon, 0.67 part of manganese, 0.38 part of molybdenum and 1 part of nano copper;
the medium-effect heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 15.3 parts of chromium, 4.38 parts of nickel, 0.76 part of silicon, 0.58 part of carbon, 0.67 part of manganese, 0.38 part of molybdenum, 0.8 part of titanium nitride and 2 parts of carbon nano tubes;
the high-efficiency heat-conducting composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 15.3 parts of chromium, 4.38 parts of nickel, 0.76 part of silicon, 0.58 part of carbon, 0.67 part of manganese, 0.38 part of molybdenum, 0.8 part of titanium nitride, 2 parts of carbon nano-tubes and 1 part of nano-copper.
Comparative example
The composite material is at least prepared from the following components in parts by weight: 100 parts of iron, 14.6 parts of chromium, 4.29 parts of nickel, 0.85 part of silicon, 0.50 part of carbon, 0.76 part of manganese and 0.30 part of molybdenum.
The composites of examples 1 to 5, comparative examples 1-3 were tested for performance, see the following table.
Claims (1)
1. The coke oven flue waste gas waste heat recovery device for preventing coking is characterized in that: comprises a waste heat recovery temperature control section (1), a depressurization decoking section (2) and a waste heat efficient recovery section (3) which are connected in sequence; the waste heat recovery temperature control section (1) is vertically arranged, the inner diameter of the waste heat recovery temperature control section is unchanged, a second medium pipeline (5) is arranged on the side wall of the waste heat recovery temperature control section, and a first temperature sensor is arranged at the outlet of the waste heat recovery temperature control section; the pressure reducing and decoking section (2) is horizontally arranged, the inner diameter of the pressure reducing and decoking section is gradually increased from left to right, the bottom of the pressure reducing and decoking section (2) is V-shaped, a first medium pipeline (4) is arranged at the bottom, a coke collecting groove (8) is arranged at the lowest position, and a macroporous metal net is arranged at the top of the coke collecting groove (8); the waste heat efficient recovery section (3) is vertically arranged, the inner diameter of the waste heat efficient recovery section is unchanged, and a third medium pipeline (6) is arranged on the side wall of the waste heat efficient recovery section; the inner diameters of the waste heat recovery temperature control section (1) and the waste heat efficient recovery section (3) are the same; a temperature control section (7) which is obliquely arranged is arranged between the depressurization decoking section (2) and the waste heat efficient recovery section (3); a second temperature sensor and a heating device (9) are arranged in the temperature control section (7);
the side wall of the waste heat recovery temperature control section (1) is sequentially provided with a temperature control section inner shell (11), a temperature control Duan Daore medium layer (12), a temperature control Duan Gere layer (13) and a temperature control Duan Waike body (14) from inside to outside; the temperature control Duan Nake body (11) is made of a low-efficiency heat conduction composite material, and the low-efficiency heat conduction composite material is at least made of the following components in parts by weight: 100 parts of iron, 14.6 parts of chromium, 4.28 parts of nickel, 0.86 part of silicon, 0.50 part of carbon, 0.71 part of manganese, 0.30 part of molybdenum and 1.5 parts of nano copper;
the depressurization decoking section (2) is made of a medium-effect heat-conducting composite material, and the medium-effect heat-conducting composite material is at least made of the following components in parts by weight: 100 parts of iron, 14.6 parts of chromium, 4.28 parts of nickel, 0.86 part of silicon, 0.50 part of carbon, 0.71 part of manganese, 0.30 part of molybdenum, 0.6 part of titanium nitride and 1.5 parts of carbon nano tube;
the side wall of the waste heat efficient recovery section (3) is sequentially provided with an efficient recovery section inner shell (31), an efficient recovery section heat conducting medium layer (32), an efficient recovery section heat insulating layer (33) and an efficient recovery section outer shell (34) from inside to outside; the inner side wall of the inner shell (31) of the high-efficiency recovery section is provided with fins (35); a nail head (36) is arranged between the outer side wall of the inner shell (31) of the high-efficiency recovery section and the inner side wall of the heat insulation layer (33) of the high-efficiency recovery section; the efficient recycling section inner shell (31) is made of an efficient heat-conducting composite material, and the efficient heat-conducting composite material is at least made of the following components in parts by weight: 100 parts of iron, 14.6 parts of chromium, 4.28 parts of nickel, 0.86 part of silicon, 0.50 part of carbon, 0.71 part of manganese, 0.30 part of molybdenum, 0.6 part of titanium nitride, 1.5 parts of carbon nano tube and 1.5 parts of nano copper.
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| CN201710562040.9A CN107177363B (en) | 2017-07-11 | 2017-07-11 | Coke oven flue waste gas waste heat recovery device capable of preventing coking |
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| CN201710562040.9A CN107177363B (en) | 2017-07-11 | 2017-07-11 | Coke oven flue waste gas waste heat recovery device capable of preventing coking |
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| CN107177363B true CN107177363B (en) | 2023-09-19 |
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| CN106767021A (en) * | 2017-02-28 | 2017-05-31 | 中冶华天工程技术有限公司 | Raw coke over gas riser heat exchanger |
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