Coke oven gas desulfurization precooling device

Abstract

The utility model relates to the technical field of coke oven gas cooling, and particularly discloses a coke oven gas desulfurization pre-cooling device which comprises a pre-cooling box, a plurality of spoilers distributed in a staggered manner are mounted on the bottom end face and the top end face in the pre-cooling box, and cooling pipes are mounted between every two spoilers in the left-right direction. One end of each cooling pipe penetrates through the inner bottom end face of the pre-cooling box and is communicated with a communicating pipe, and when high-temperature coal gas of the coke oven enters the pre-cooling box, the multiple spoilers can play a role in slowing down the flow speed of the high-temperature coal gas and prolonging the contact time of the high-temperature coal gas and the multiple cooling pipes, so that the high-temperature coal gas is primarily cooled; and after the preliminarily cooled coal gas enters the cooling box, cold airflow can be conveyed into the cooling box by starting the two air coolers to cool the plurality of breather pipes, so that the coal gas is further cooled, the high-temperature coal gas of the coke oven is effectively cooled, and the pre-cooling effect of the coke oven gas is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coke oven gas cooling, in particular to a coke oven gas desulfurization precooling device. Background Art

[0002] Since coke oven gas contains a large amount of harmful gases, it needs to be purified before it can be discharged. Since coke oven gas contains a high amount of heat, it needs to be cooled in advance during operation so that it reaches the temperature required for desulfurization.

[0003] At present, when cooling the high-temperature coal gas of the coke oven, a cooling liquid cooling method is usually adopted. When cooling, the coolant absorbs the heat of the high-temperature coal gas, causing its own temperature to gradually rise until it is synchronized with the temperature of the coke oven gas. The high-temperature coal gas cannot be continuously cooled. Therefore, in the subsequent cooling process of the high-temperature coal gas, the coke oven gas cannot be effectively cooled. Moreover, the cooling efficiency is low when only the cooling liquid is used, resulting in poor pre-cooling effect of the coke oven gas. Utility Model Content

[0004] The purpose of the utility model is to provide a coke oven gas desulfurization precooling device, which has the characteristics of effectively cooling the high-temperature gas of the coke oven, facilitating the reaching of the temperature required for desulfurization, and effectively improving the precooling of the coke oven gas.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a coke oven gas desulfurization precooling device, comprising a precooling box, wherein the bottom end surface and the top end surface of the interior of the precooling box are both installed with a plurality of staggered baffles, and cooling pipes are installed between the left and right sides of the plurality of baffles, one end of the cooling pipe passes through the inner bottom end surface of the precooling box and is connected to a connecting pipe, the outer wall of the connecting pipe is connected to a water pump through a pipeline, a chiller is installed at the bottom of the precooling box through a bracket, the right end of the precooling box is connected to a connecting pipe, and the other end of the connecting pipe is connected to the cooling box;

[0006] Two fixed plates distributed on the left and right are installed inside the cooling box, and a plurality of evenly distributed ventilation pipes are passed through and fixedly installed between the two fixed plates. Two air coolers distributed on the left and right are passed through the bottom of the cooling box, and the right end of the cooling box is connected to the desulfurization tower through a pipeline.

[0007] In order to facilitate the discharge of the water in the cooling pipe after cooling into the chiller, as a preferred coke oven gas desulfurization precooling device of the present invention, the other ends of multiple cooling pipes all pass through the upper end surface of the precooling box and are connected to a guide pipe, and the other end of the guide pipe is connected to the chiller.

[0008] In order to facilitate the flow of cooling water in the chiller into multiple cooling pipes, as a coke oven gas desulfurization precooling device of the present invention, the water pump is preferably located at the top of the chiller, and the water pump pipe of the water pump is located inside the water tank of the chiller.

[0009] In order to increase the contact area between the cooling pipe and the high-temperature coal gas and facilitate cooling thereof, as a preferred coke oven gas desulfurization precooling device of the present invention, the cooling pipe is in a continuously curved shape.

[0010] In order to facilitate the discharge of gas in the cooling box, as a preferred coke oven gas desulfurization precooling device of the present invention, an exhaust port is opened through the upper end surface of the cooling box.

[0011] In order to facilitate the introduction of high-temperature coal gas into the interior of the precooling box, as a preferred coke oven gas desulfurization precooling device of the present invention, the left end of the precooling box is connected to an air inlet pipe.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] When the utility model is used, when the high-temperature coal gas of the coke oven enters the pre-cooling box, the water pump is started to pass the cooling water in the chiller into the multiple cooling pipes respectively. The multiple baffles can slow down the flow rate of the high-temperature coal gas and increase the contact time between the high-temperature coal gas and the multiple cooling pipes, thereby performing a preliminary cooling operation on the high-temperature coal gas. Then, the coal gas after the preliminary cooling can enter the cooling box through the connecting pipe. At the same time, the water in the multiple cooling pipes after absorbing heat and heating can flow back to the chiller through the guide pipe to be cooled again. The circulating cooling is used, and the high-temperature coal gas can be subjected to a continuous preliminary cooling operation.

[0014] And when the coal gas after preliminary cooling enters the cooling box, it can be dispersed into multiple ventilation pipes. At this time, by starting two cooling air blowers, the cold air flow can be transported to the cooling box to cool the multiple ventilation pipes, thereby further cooling the coal gas, achieving effective cooling of the high-temperature coal gas of the coke oven, facilitating the achievement of the temperature required for desulfurization, and effectively improving the pre-cooling effect of the coke oven gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall cross-sectional structural diagram of the utility model;

[0016] Figure 2 This is a left-side structural diagram of the cooling pipe of the present invention;

[0017] Figure 3 This is a left-side structural diagram of the left fixed plate of the present invention.

[0018] In the figure: 1. Pre-cooling box; 101. Air inlet pipe; 2. Baffle; 3. Cooling pipe; 301. Connecting pipe; 302. Water pump; 4. Draft pipe; 401. Chiller; 5. Connecting pipe; 6. Cooling box; 601. Exhaust port; 7. Fixing plate; 701. Ventilation pipe; 8. Air cooler; 9. Desulfurization tower. DETAILED DESCRIPTION

[0019] See also Figures 1 to 3 A coke oven gas desulfurization precooling device includes a precooling box 1. A plurality of staggered baffles 2 are installed on the bottom and top surfaces of the precooling box 1. Cooling pipes 3 are installed between the left and right baffles 2. One end of the cooling pipe 3 passes through the bottom end of the precooling box 1 and is connected to a connecting pipe 301. The outer wall of the connecting pipe 301 is connected to a water pump 302 through a pipeline. A chiller 401 is installed at the bottom of the precooling box 1 through a bracket. The right end of the precooling box 1 is connected to a connecting pipe 5, and the other end of the connecting pipe 5 is connected to a cooling box 6.

[0020] Two fixed plates 7 distributed on the left and right are installed inside the cooling box 6. A plurality of evenly distributed ventilation pipes 701 are passed through and fixedly installed between the two fixed plates 7. Two air coolers 8 distributed on the left and right are passed through the bottom of the cooling box 6. The right end of the cooling box 6 is connected to the desulfurization tower 9 through a pipeline.

[0021] In this embodiment, when the high-temperature coal gas from the coke oven enters the pre-cooling box 1, the water pump 302 is started to pass the cooling water in the chiller 401 into the multiple cooling pipes 3. The multiple baffles 2 can slow down the flow rate of the high-temperature coal gas and increase the contact time between the high-temperature coal gas and the multiple cooling pipes 3, thereby performing a preliminary cooling of the high-temperature coal gas. The coal gas after the preliminary cooling can then enter the cooling box 6 through the connecting pipe 5. At the same time, the water in the multiple cooling pipes 3, which has absorbed heat and heated up, can flow back to the chiller 401 through the guide pipe 4 for re-cooling. The circulating cooling can be used to continuously perform the preliminary cooling operation of the high-temperature coal gas.

[0022] And when the coal gas after preliminary cooling enters the cooling box 6, it can be dispersed into multiple ventilation pipes 701. At this time, by starting the two air coolers 8, the cold air flow can be transported to the cooling box 6 to cool the multiple ventilation pipes 701, thereby further cooling the coal gas, achieving effective cooling of the high-temperature coal gas of the coke oven, facilitating the achievement of the temperature required for desulfurization, and effectively improving the pre-cooling effect of the coke oven gas.

[0023] As a technical optimization solution of the present invention, the other ends of the multiple cooling pipes 3 all pass through the upper end surface of the pre-cooling box 1 and are connected to the guide pipe 4, and the other end of the guide pipe 4 is connected to the chiller 401.

[0024] In this embodiment, by providing a guide pipe 4, the water in the plurality of cooling pipes 3 after cooling can be guided to the chiller 401 for re-cooling.

[0025] As a technical optimization solution of the present invention, the water pump 302 is located on the top of the chiller 401 , and the water pump pipe of the water pump 302 is located inside the water tank of the chiller 401 .

[0026] In this embodiment, by starting the water pump 302 , the cooling water in the chiller 401 can be pumped into the connecting pipe 301 .

[0027] As a technical optimization solution of the present invention, the cooling pipe 3 is in a continuously curved shape.

[0028] In this embodiment, the cooling pipe 3 is arranged to be continuously curved, thereby increasing the contact area with the exhaust gas and facilitating cooling of the exhaust gas.

[0029] As a technical optimization solution of the present invention, an exhaust port 601 is formed through the upper end surface of the cooling box 6 .

[0030] In this embodiment, the exhaust port 601 is provided to facilitate the exhaust of the air flow in the cooling box 6 .

[0031] As a technical optimization solution of the present invention, the left end of the pre-cooling box 1 is connected to an air intake pipe 101.

[0032] In this embodiment, the air inlet pipe 101 is provided to facilitate the exhaust gas to flow into the interior of the pre-cooling box 1 .

[0033] Working principle: First, when using the device, the air inlet pipe 101 of the device is connected to the external coke oven exhaust pipe. Then, in the process of the coke oven transporting high-temperature coal gas to the desulfurization tower 9, the high-temperature coal gas first enters the pre-cooling box 1 through the air inlet pipe 101, and by starting the water pump 302, the cooling water in the chiller 401 is pumped into the connecting pipe 301, so that the connecting pipe 301 passes the cooling water into the multiple cooling pipes 3 respectively. The multiple baffles 2 can slow down the flow rate of the high-temperature coal gas and increase the contact time between the high-temperature coal gas and the multiple cooling pipes 3, thereby preliminarily cooling the high-temperature coal gas. Then, the coal gas after the preliminary cooling can enter the cooling box 6 through the connecting pipe 5. At the same time, the water in the multiple cooling pipes 3 after absorbing heat and heating can flow back to the chiller 401 through the guide pipe 4 for re-cooling. The circulating cooling can be used to continuously perform the preliminary cooling operation on the high-temperature coal gas.

[0034] And when the coal gas after preliminary cooling enters the cooling box 6, it can be dispersed into multiple ventilation pipes 701. At this time, by starting the two air coolers 8, the cold air flow can be transported to the cooling box 6 to cool the multiple ventilation pipes 701, so that the coal gas can be further cooled to facilitate reaching the temperature required for desulfurization. The gas after cooling in the cooling box 6 can be discharged from the exhaust port 601.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A coke oven gas desulfurization precooling device, comprising a precooling box (1), characterized in that: The bottom end surface and the top end surface of the pre-cooling box (1) are both installed with a plurality of staggered baffles (2), and cooling pipes (3) are installed between the left and right sides of the plurality of baffles (2), one end of the cooling pipe (3) passes through the bottom end surface of the pre-cooling box (1) and is connected to a connecting pipe (301), the outer wall of the connecting pipe (301) is connected to a water pump (302) through a pipeline, a chiller (401) is installed at the bottom of the pre-cooling box (1) through a bracket, the right end of the pre-cooling box (1) is connected to a connecting pipe (5), and the other end of the connecting pipe (5) is connected to a cooling box (6); Two fixed plates (7) distributed on the left and right are installed inside the cooling box (6), and a plurality of evenly distributed ventilation pipes (701) are passed through and fixedly installed between the two fixed plates (7). Two air coolers (8) distributed on the left and right are passed through the bottom of the cooling box (6), and the right end of the cooling box (6) is connected to a desulfurization tower (9) through a pipeline.

2. A coke oven gas desulfurization precooling device according to claim 1, characterized in that: The other ends of the plurality of cooling pipes (3) all pass through the upper end surface of the pre-cooling box (1) and are connected to a flow guide pipe (4), and the other end of the flow guide pipe (4) is connected to a chiller (401).

3. The coke oven gas desulfurization precooling device according to claim 1, characterized in that: The water pump (302) is located on the top of the chiller (401), and the water pump (302) is located inside the water tank of the chiller (401).

4. The coke oven gas desulfurization precooling device according to claim 1, characterized in that: The cooling pipe (3) is in a continuously curved shape.

5. The coke oven gas desulfurization precooling device according to claim 1, characterized in that: An exhaust port (601) is provided through the upper end surface of the cooling box (6).

6. The coke oven gas desulfurization precooling device according to claim 1, characterized in that: The left end of the pre-cooling box (1) is connected to an air inlet pipe (101).

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