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CN-224230738-U - Device for indirectly heating ammonium sulfate mother liquor by utilizing waste heat of coke oven riser

CN224230738UCN 224230738 UCN224230738 UCN 224230738UCN-224230738-U

Abstract

The utility model relates to the technical field of coking heat exchange equipment, in particular to a device for indirectly heating ammonium sulfate mother liquor by utilizing waste heat of a coke oven ascending pipe, which comprises a cylinder body, a heat exchange pipe, an inlet valve, a heat conduction oil inlet collecting pipe, a heat conduction oil inlet pipe, a heat conduction oil pump, a heat conduction oil groove, a heat conduction oil pipe, a mother liquor heater, a heat conduction oil outlet pipe, a heat conduction oil outlet collecting pipe, an outlet valve, a fixing piece and heat conduction cement.

Inventors

  • DUAN MENGLIN
  • XIAO CHANGZHI

Assignees

  • 中冶焦耐(大连)工程技术有限公司

Dates

Publication Date
20260512
Application Date
20250418

Claims (5)

  1. 1. A device for indirectly heating ammonium sulfate mother liquor by utilizing waste heat of a coke oven rising pipe comprises a cylinder body (2), a heat exchange pipe (3), an inlet valve (9), a heat conduction oil inlet collecting pipe (6), a heat conduction oil inlet pipe (7), a heat conduction oil pump (8), a heat conduction oil groove (5), a heat conduction oil pipe (10), a mother liquor heater (4), a heat conduction oil outlet pipe (12), a heat conduction oil outlet collecting pipe (13), an outlet valve (11), a fixing piece (15) and heat conduction cement (16), and is characterized in that the heat exchange pipe (3) is spirally wound on the outer side of the cylinder body (2) and connected through the fixing piece (15), a gap is formed between the heat exchange pipe (3) and the fixing piece (15), the heat conduction cement (16) is wrapped on the outer side of the heat exchange pipe (3), the heat exchange oil outlet collecting pipe (13) and the heat conduction oil heater (4) are sequentially connected through the heat conduction oil outlet pipe (12), the outlet valve (11) is arranged at the outlet of the heat exchange pipe (3), the inlet side of the heat exchange pipe (3) is sequentially connected with the heat conduction oil inlet collecting pipe (6), the heat exchange oil pump (8) and the heat conduction oil pump (5), an inlet valve (9) is arranged at the inlet of the heat exchange tube (3), and the mother liquid heater (4) is connected with the heat conduction oil groove (5) through a heat conduction oil pipe (10).
  2. 2. The device for indirectly heating the ammonium sulfate mother liquor by utilizing the waste heat of the coke oven riser tube according to claim 1, wherein the device for indirectly heating the ammonium sulfate mother liquor by utilizing the waste heat of the coke oven riser tube further comprises a flange (1) and an external heat preservation (14), wherein the flange (1) is arranged at the bottom of the cylinder body (2), and the external heat preservation (14) is arranged outside the cylinder body (2).
  3. 3. The device for indirectly heating the ammonium sulfate mother liquor by utilizing the waste heat of the coke oven riser tube according to claim 1, wherein the heat conducting oil tank (5) comprises a sealing head (51), a tank body (52), a supplementary heat conducting oil inlet (53), a circulating heat conducting oil inlet (54), a heat conducting oil discharging port (55) and a circulating heat conducting oil outlet (56), the circulating heat conducting oil inlet (54) is connected with the heat conducting oil pipe (10), and the circulating heat conducting oil outlet (56) is connected with the heat conducting oil inlet pipe (7).
  4. 4. The device for indirectly heating ammonium sulfate mother liquor by utilizing waste heat of a coke oven ascending pipe according to claim 1, wherein the mother liquor heater (4) comprises a mother liquor inlet (41), a lower pipe box (42), a heat conducting oil outlet (43), a tube bundle (44), an upper pipe box (45), a mother liquor outlet (46) and a heat conducting oil inlet (47), the mother liquor inlet (41) and the mother liquor outlet (46) are arranged at the upper end and the lower end of the mother liquor heater (4), the mother liquor inlet (41) is connected with the lower pipe box (42), the mother liquor outlet (46) is connected with the upper pipe box (45), the tube bundle (44) is arranged between the upper pipe box (45) and the lower pipe box (42), the heat conducting oil inlet (47) is connected with the heat conducting oil outlet pipe (12), and the heat conducting oil outlet (43) is connected with the heat conducting oil pipe (10).
  5. 5. The device for indirectly heating the ammonium sulfate mother liquor by utilizing the waste heat of the coke oven riser tube according to claim 1, wherein the flow direction of the ammonium sulfate mother liquor in the mother liquor heater (4) is opposite to the flow direction of the heat conduction oil.

Description

Device for indirectly heating ammonium sulfate mother liquor by utilizing waste heat of coke oven riser Technical Field The utility model relates to the technical field of coking heat exchange equipment, in particular to a device for indirectly heating ammonium sulfate mother liquor by utilizing waste heat of a coke oven riser. Background The heat loss in the coking process mainly comprises 4 parts of furnace outlet red Jiao Xianre, raw gas sensible heat, coke oven flue gas sensible heat and furnace body surface heat dissipation. The temperature of the raw coke oven gas is about 650-750 ℃, the sensible heat of the raw coke oven gas accounts for about 36% of the heat distribution of the coke oven, and the traditional method for treating the raw coke oven gas in the coking industry is to spray a certain amount of circulating ammonia water with the temperature of 70-75 ℃ to the raw coke oven gas, and the raw coke oven gas can be recycled by a chemical production section along with the heat absorption and evaporation of the circulating ammonia water. The traditional raw gas cooling method causes serious waste of raw gas sensible heat, and the coke oven raw gas waste heat utilization technology is an environment-friendly new technology for recovering raw gas sensible heat, realizing energy conservation and emission reduction and creating economic benefits. In the application process of the coke oven riser waste heat utilization technology, the riser heat exchanger is often deformed and leaked due to unreasonable structure, so that heat exchange working medium cannot be prevented from entering a coke oven carbonization chamber, and the safety and stability of coke oven production are endangered. Meanwhile, the traditional rising pipe waste heat utilization technology cannot ensure that the temperature of the inner wall of the rising pipe evaporator is more than or equal to 450 ℃, a large amount of tar condensation temperature area cannot be effectively avoided, and the rising pipe is blocked by coking oil and graphitization in the rising pipe, so that huge environmental protection hidden danger is brought. The conventional design of heating the ammonium sulfate mother liquor adopts steam heating, and because the steam is unstable, especially in winter, the heating temperature of the ammonium sulfate mother liquor is unstable, the operation of an ammonium sulfate working section is influenced, and the deamination of coal gas is unstable. Disclosure of utility model In order to overcome the defects of the prior art, the utility model provides a device for indirectly heating ammonium sulfate mother liquor by utilizing waste heat of a coke oven rising pipe, the device adopts heat conduction oil as a heat exchange medium and a heating medium, the heat conduction oil exchanges heat with raw gas in a cylinder body through the heat exchange pipe, the heat exchange pipe is spirally wound on the outer side of the cylinder body, the heat exchange efficiency is high, meanwhile, the heat conduction oil vibrates through the heat exchange pipe, impurities on the inner wall of the cylinder body fall along with vibration, the stable operation of equipment is ensured, the heat conduction oil heats the ammonium sulfate mother liquor through the mother liquor heater, the system of the heat conduction oil is a closed-circuit system, the heat efficiency is high, the heat conduction oil system obtains higher temperature for heating the ammonium sulfate mother liquor under lower working pressure, and the working environment is safe and reliable. In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme: A device for indirectly heating ammonium sulfate mother liquor by utilizing waste heat of a coke oven ascending pipe comprises a cylinder body, a heat exchange pipe, an inlet valve, a heat conduction oil inlet collecting pipe, a heat conduction oil inlet pipe, a heat conduction oil pump, a heat conduction oil groove, a heat conduction oil pipe, a mother liquor heater, a heat conduction oil outlet pipe, a heat conduction oil outlet collecting pipe, an outlet valve, a fixing piece and heat conduction cement. Further, the device for indirectly heating the ammonium sulfate mother liquor by utilizing the waste heat of the coke oven riser pipe further comprises a flange and an external heat preservation device, wherein the flange is arranged at the bottom of the cylinder body, and the external heat preservation device is arranged at the outer side of the cylinder body. Further, the heat conduction oil groove include head, cell body, supplementary conduction oil entry, circulation conduction oil entry, conduction oil blow-out mouth and circulation conduction oil export, circulation conduction oil entry connect conduction oil pipe, circulation conduction oil export connect conduction oil entry pipe. Further, the mother liquor heater include mother liquor entry, down tube case, conduction oil