Coke oven riser raw gas sensible heat recovery device

Abstract

The utility model relates to the field of heat recovery, and discloses a coke oven riser raw gas sensible heat recovery device which comprises a deaerator, a first water pump is installed at the right end of the deaerator, a recovery mechanism is arranged at the right end of the first water pump, the recovery mechanism comprises a steam pocket, the left end of the steam pocket is installed at the right end of the first water pump, and the right end of the steam pocket is installed at the right end of the first water pump. A circulating pump is installed at the right end of the steam pocket, an ascending pipe evaporator is installed at the right end of the circulating pump, a liquid outlet is formed in the front end of the ascending pipe evaporator, a backflow pipe is installed at the front end of the liquid outlet, and the other end of the backflow pipe is installed at the bottom end of the first water pump. According to the utility model, the flowing type design is adopted, after hot steam and water are mixed, the mixture is discharged into the steam pocket, and gas and liquid can be directly discharged separately, so that the internal pressure of a single component can be prevented from being too large, the gas and the liquid can be utilized separately, and the whole device is relatively convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the heat recovery field especially relates to a coke oven riser pipe raw coal gas sensible heat recovery device. BACKGROUND

[0002] The coke oven riser pipe is the important component part of the coke oven equipment, it is located at the top of the coking chamber of the coke oven, and the main role is to lead out the raw coal gas produced in the coal dry distillation process in the coking chamber, in the prior art, generally sets up the heat recovery device at the exhaust position of the coke oven riser pipe, so that the discharged hot steam can be secondarily utilized, so that the effect of improving energy utilization rate can be achieved.

[0003] The existing coke oven riser pipe waste heat recovery process adopts the vaporization cooling process, mainly adopts the water jacket structure, produces steam through the direct heat exchange of medium water and raw coal gas through the inner wall of the jacket, however, the water jacket structure bears high temperature while bearing pressure limit, the produced steam pressure is low, and there are water flow dead zones in the upper and lower ends, and the inner wall temperature is low, which easily causes the tar steam in the raw coal gas to condense, therefore, the coke oven riser pipe raw coal gas sensible heat recovery device is provided to solve the above problems. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a coke oven riser pipe raw coal gas sensible heat recovery device, which aims at improving the problem of "the existing water jacket design is limited in use and is inconvenient to use" in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: the coke oven riser pipe raw coal gas sensible heat recovery device, including the oxygen remover, the right end of the oxygen remover is installed with the first water pump, the right end of the first water pump is provided with the recovery mechanism, the recovery mechanism includes the steam pocket, the left end of the steam pocket is installed at the right end of the first water pump, the right end of the steam pocket is installed with the circulating pump, the right end of the circulating pump is installed with the riser pipe evaporator, the front end of the riser pipe evaporator is provided with the liquid discharge port, the front end of the liquid discharge port is installed with the backflow pipe, the other end of the backflow pipe is installed at the bottom end of the first water pump, the left end of the oxygen remover is provided with the liquid inlet pipe, the top end of the oxygen remover is provided with the gas inlet pipe, the top end of the steam pocket is provided with the gas conveying assembly.

[0006] Further description of the above technical scheme:

[0007] The gas conveying assembly includes the gas collection box, the top end of the steam pocket is fixedly connected with the back surface of the gas collection box through the pipeline, the top end of the gas collection box is fixedly connected with the flow guide box, and the top end of the flow guide box is provided with the exhaust port.

[0008] Further description of the above technical scheme:

[0009] The left surface of the flow guide box is provided with a diffusion port.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the flow guide box is rotatably connected with a sealing shaft, the inner wall of the sealing shaft is provided with a ventilation groove, the ventilation groove penetrates the upper and lower ends of the sealing shaft from top to bottom, and the ventilation groove is matched with the exhaust port.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the ventilation groove is provided with a ventilation branch groove, the ventilation branch groove penetrates the right end of the sealing shaft, and the ventilation branch groove and the ventilation groove are vertically arranged.

[0014] As a further description of the above technical solution:

[0015] The front surface of the flow guide box is provided with a driving motor, and the rear end of the output shaft of the driving motor is fixedly connected to the front surface of the sealing shaft.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the sealing shaft is fixedly connected with a sealing ring, and the sealing ring rotates in the inner wall of the flow guide box.

[0018] As a further description of the above technical solution:

[0019] The inner wall of the gas collecting box is provided with a fan near the bottom end.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] 1、The utility model discloses a flow type design, after the mixing of hot steam and water, the gas and liquid can be directly separated and discharged when being discharged into the steam pocket, so that the pressure in the single component can be prevented from being too large, and the gas and liquid can be used respectively, and the overall device is convenient to use.

[0022] 2、The utility model discloses a gas conveying assembly, when water is filled and started, the air and non-condensed gas in the steam pocket can be actively discharged, so that the influence of residual gas in the steam pocket on the overall system can be prevented, and the safety of the overall device is good. DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the gas conveying assembly in the utility model;

[0025] Figure 3 It is the three-dimensional structure schematic view of the sealed shaft in the utility model.

[0026] Legend:

[0027] 1, oxygen remover; 2, gas inlet pipe; 3, liquid inlet pipe; 4, first water pump; 5, steam pocket; 6, gas delivery assembly; 61, gas collection box; 62, fan; 63, flow guide box; 64, sealing shaft; 65, air vent groove; 66, air vent branch groove; 67, driving motor; 68, diffusion port; 69, exhaust port; 610, sealing ring; 7, circulating pump; 8, riser evaporator; 9, liquid outlet; 10, return pipe. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Refer to Figure 1 - Figure 3 An embodiment provided by the utility model: a coke oven riser dry coal gas sensible heat recovery device, including an oxygen remover 1 used for removing oxygen in water body, the left end of the oxygen remover 1 is provided with a liquid inlet pipe 3 used for conveniently conveying liquid to the inside of the oxygen remover 1, the liquid used by the system when working is mainly desalted water, so that the damage of water body to the inside of the device can be reduced, the top end of the oxygen remover 1 is provided with a gas inlet pipe 2 used for making hot steam enter the inside of the oxygen remover 1, the right end of the oxygen remover 1 is installed with a first water pump 4 used for driving the flow of water in the inside of the oxygen remover 1, the right end of the first water pump 4 is provided with a recovery mechanism used for recycling hot steam, the recovery mechanism includes a steam pocket 5 used for providing a site for gas and liquid mixture, the left end of the steam pocket 5 is installed at the right end of the first water pump 4, the first water pump 4 can directly drive the mixture of water flow and gas in the inside of the oxygen remover 1 to enter the inside of the steam pocket 5, the right end of the steam pocket 5 is installed with a circulating pump 7 used for leading out the water body in the inside of the steam pocket 5, the right end of the circulating pump 7 is installed with a riser evaporator 8 used for heating water body, the front end of the riser evaporator 8 is provided with a liquid outlet 9 used for making gas-liquid mixture leave the inside of the riser evaporator 8, the front end of the liquid outlet 9 is installed with a return pipe 10 used for making gas-liquid mixture flow, the other end of the return pipe 10 is installed at the bottom end of the first water pump 4, the top end of the steam pocket 5 is provided with a gas delivery assembly 6 used for conveying steam to oil-rich heat exchanger.

[0030] Refer to Figure 1 - Figure 3, the gas delivery assembly 6 comprises a gas collection box 61 for collecting steam, the top end of the steam drum 5 is fixedly connected to the rear surface of the gas collection box 61, the low-temperature steam discharged from the inside of the steam drum 5 can directly enter the inside of the gas collection box 61 through the pipeline, the top end of the gas collection box 61 is fixedly connected with a flow guide box 63 for guiding the flow of gas, the top end of the flow guide box 63 is provided with an exhaust port 69, the top end opening of the flow guide box 63 is directly connected with the oil-rich heat exchanger through the pipeline, the left surface of the flow guide box 63 is provided with a diffusion port 68 for discharging air in the steam drum 5, the inner wall of the flow guide box 63 is rotatably connected with a sealing shaft 64 for controlling the flow route in the flow guide box 63, the inner wall of the sealing shaft 64 is provided with an air passage 65 for air to pass through, the air passage 65 penetrates through the upper and lower ends of the sealing shaft 64 from top to bottom, the air passage 65 is matched with the exhaust port 69, when the air passage 65 is in a vertical up-down state, the steam entering the inside of the gas collection box 61 will directly pass through the air passage 65 and be discharged from the exhaust port 69.

[0031] Referring to Figure 1 - Figure 3 The inner wall of the air passage 65 is provided with an air branch groove 66 connected with the diffusion port 68, the air branch groove 66 penetrates through the right end of the sealing shaft 64, when the air passage 65 is in a horizontal state and the air branch groove 66 faces downward, the gas entering the inside of the gas collection box 61 will pass through the air passage 65 and the air branch groove 66 and be discharged from the diffusion port 68, the air branch groove 66 and the air passage 65 are vertically arranged, the front surface of the flow guide box 63 is installed with a driving motor 67 for driving the rotation of the flow guide box 63, the rear end of the output shaft of the driving motor 67 is fixedly connected to the front surface of the sealing shaft 64, the sealing shaft 64 can be rotated by starting the driving motor 67, the outer wall of the sealing shaft 64 is fixedly connected with a sealing ring 610 for increasing the sealing property between the sealing shaft 64 and the gas collection box 61, the sealing ring 610 rotates in the inner wall of the flow guide box 63, the inner wall of the gas collection box 61 is installed with a fan 62 near the bottom end position for guiding the flow of steam.

[0032] Working principle: before using the whole device, the driving motor 67 needs to be started to drive the rotation of the sealing shaft 64 to drive the air passage 65 to be in a horizontal state and the air branch groove 66 to be vertically downward, at this time, the fan 62 can be started to drive the air and non-condensable gas in the steam drum 5 to be discharged through the gas collection box 61, the air branch groove 66, the air passage 65 and the diffusion port 68, so as to prevent the internal pressure of the steam drum 5 from being too large during the operation of the device.

[0033] In the use of the whole device, the desalted water and hot steam can be directly introduced into the inside of the deaerator 1, and then the first water pump 4 is started to drive the water vapor mixture into the inside of the steam drum 5, the circulating pump 7 guides the water vapor mixture into the inside of the riser evaporator 8, the water body is heated by the steam in the inside of the riser evaporator 8, the generated water vapor is discharged from the top end of the riser evaporator 8, and the remaining water body and the whole are returned to the inside of the steam drum 5 through the backflow pipe 10 and the first water pump 4, at this time, if the gas temperature is still greater than 50°, the circulation can be continued, when the gas temperature is less than 50°, the driving motor 67 is started to drive the sealing shaft 64 to rotate until the air slot 65 is in the vertical state, then the fan 62 is started to guide the steam in the inside of the steam drum 5 to be discharged through the gas collecting box 61 and the air slot 65.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or to the equivalent replacement of some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A coke oven up-take raw gas sensible heat recovery device comprising an oxygen remover (1), characterized in that: The right end of the deaerator (1) is provided with a first water pump (4), the right end of the first water pump (4) is provided with a recovery mechanism, the recovery mechanism comprises a steam drum (5), the left end of the steam drum (5) is installed at the right end of the first water pump (4), the right end of the steam drum (5) is provided with a circulating pump (7), the right end of the circulating pump (7) is provided with a riser evaporator (8), the front end of the riser evaporator (8) is provided with a drain port (9), the front end of the drain port (9) is provided with a return pipe (10), the other end of the return pipe (10) is installed at the bottom end of the first water pump (4), the left end of the deaerator (1) is provided with a liquid inlet pipe (3), the top end of the deaerator (1) is provided with an air inlet pipe (2), the top end of the steam drum (5) is provided with a gas delivery assembly (6).

2. The coke oven uptake gas sensible heat recovery device according to claim 1, characterized in that: The gas delivery assembly (6) comprises a gas collecting box (61), the top end of the steam drum (5) is fixedly connected to the rear surface of the gas collecting box (61) through a pipeline, the top end of the gas collecting box (61) is fixedly connected with a flow guide box (63), and the top end of the flow guide box (63) is provided with an exhaust port (69).

3. The coke oven uptake gas sensible heat recovery device according to claim 2, characterized in that: The left surface of the flow guide box (63) is provided with a diffusion port (68).

4. The coke oven uptake gas sensible heat recovery device according to claim 2, characterized in that: The inner wall of the flow guide box (63) is rotatably connected with a sealing shaft (64), the inner wall of the sealing shaft (64) is provided with a ventilation groove (65), the ventilation groove (65) penetrates the upper and lower ends of the sealing shaft (64) from top to bottom, and the ventilation groove (65) is matched with the exhaust port (69).

5. The coke oven uptake gas sensible heat recovery device according to claim 4, characterized in that: The inner wall of the ventilation groove (65) is provided with a ventilation branch groove (66), the ventilation branch groove (66) penetrates the right end of the sealing shaft (64), and the ventilation branch groove (66) and the ventilation groove (65) are arranged vertically.

6. The coke oven uptake gas sensible heat recovery device according to claim 5, characterized in that: The front surface of the flow guide box (63) is provided with a driving motor (67), and the rear end of the output shaft of the driving motor (67) is fixedly connected to the front surface of the sealing shaft (64).

7. The coke oven uptake gas sensible heat recovery device according to claim 4, characterized in that: The outer wall of the sealing shaft (64) is fixedly connected with a sealing ring (610), and the sealing ring (610) rotates in the inner wall of the flow guide box (63).

8. The coke oven uptake gas sensible heat recovery device according to claim 2, characterized in that: The inner wall of the gas collecting box (61) is provided with a fan (62) near the bottom end.

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