Synthesis gas temperature reducing device

Abstract

The invention relates to a temperature reducing device, in particular to a synthesis gas temperature reducing device, and aims to solve the problem that the inner wall of cooling equipment in a fluidized bed coal gasification device cannot fix the synthesis gas temperature reducing device. An adjusting valve is mounted on a cooling water pipe, and the water outlet end of the cooling water pipe is communicated with two cooling water inlet connecting pipes respectively; the two cooling water inlet connecting pipes are inserted into the connecting cylinder, at least two branch pipes are installed at the outlet end of one cooling water inlet connecting pipe, at least one branch pipe is installed at the outlet end of the other cooling water inlet connecting pipe, each branch pipe is provided with one rotating film nozzle, and the throttling orifice plate is installed on the cooling water inlet connecting pipe of at least one branch pipe. The multiple rotating film nozzles are arranged in the connecting cylinder, the thermocouple is installed on the connecting cylinder and used for measuring the temperature of the equipment cylinder, and the opening degree of the adjusting valve is adjusted according to the temperature of the equipment cylinder. The invention is applied to the field of petrochemical device coal gas chemical industry.

Description

Technical Field

[0001] The invention relates to a cooling device, in particular to a synthesis gas cooling device. The invention is applied to the field of coal gas chemical industry of petrochemical plants. Background Art

[0002] The temperature of the synthesis gas produced in the fluidized bed coal gasification device is relatively high. When recovering waste heat, a high-temperature evaporator is usually set first, followed by a superheater and a low-temperature evaporator. Since the superheater is a gas-steam heat exchanger, it is easy to produce local overheating, which will cause the heat exchange tubes of the equipment to fail. Therefore, a cooling device is required to control the temperature of the synthesis gas at the superheater inlet within a reasonable range.

[0003] In addition, the working temperature of the syngas is too high, which has exceeded the applicable temperature range of common steel. When the working pressure is about 4MPa, in order to ensure the mechanical properties of the equipment shell material, the shell is lined with refractory castables to play a role in heat insulation and cooling. However, this also makes it impossible to fix the syngas cooling device on the inner wall of the equipment to avoid overheating of the equipment shell due to heat conduction of the structural parts. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the inner wall of the cooling device in the fluidized bed coal gasification device cannot fix the synthesis gas cooling device, and it is necessary to provide a synthesis gas cooling device.

[0005] The technical solution adopted by the present invention to solve the above problems is:

[0006] A synthesis gas temperature reduction device comprises a throttling orifice plate, a regulating valve, a thermocouple, a cooling water pipe, two cooling water inlet pipes, and a plurality of rotating film nozzles;

[0007] The regulating valve is installed on the cooling water pipe, and the water outlet end of the cooling water pipe is connected with two cooling water inlet pipes respectively. The two cooling water inlet pipes are inserted on the connecting tube. At least two branch pipes are installed on the outlet end of one cooling water inlet pipe, and at least one branch pipe is installed on the outlet end of the other cooling water inlet pipe. A rotary film nozzle is installed on each branch pipe, and a throttling orifice plate is installed on the cooling water inlet pipe of at least one branch pipe. Multiple rotary film nozzles are arranged in the connecting tube, and a thermocouple is installed on the connecting tube. The thermocouple is used to measure the temperature of the equipment tube and adjust the opening of the regulating valve according to the temperature of the equipment tube.

[0008] Furthermore, a refractory casting layer is provided on the inner side wall of the equipment cylinder.

[0009] Furthermore, it also includes refractory fibers, which are wrapped around the cooling water inlet pipe and are located between the refractory casting layer and the cooling water inlet pipe.

[0010] Furthermore, it also includes six support plates, the inlet of each cooling water inlet pipe is connected to the outlet of the cooling water pipe through a flange, three support plates are arranged between each cooling water inlet pipe and the pipe of the equipment tube, and the three support plates are evenly distributed along the radial direction of the cooling water inlet pipe.

[0011] Furthermore, it also includes a plurality of supporting plates, and the cooling water inlet pipe and the connected branch pipe are fixedly connected through the supporting plates.

[0012] Furthermore, it also includes a fixed shaft and a fastener. A fixed shaft is provided between the two cooling water inlet pipes. One end of the fixed shaft is welded and fixed to one cooling water inlet pipe, and the other end of the fixed shaft is connected to the other cooling water inlet pipe via a fastener.

[0013] Beneficial effects of the present invention:

[0014] 1. The invention itself is arranged on the connecting cylinder between the high-temperature evaporator and the superheater, a cooling water inlet pipe 1 is arranged on the cylinder, and a refractory fiber 7 is installed between the pipe and the cylinder to prevent the pipe from overheating; two or more cooling water inlet pipes 1 are arranged, and the two cooling water inlet pipes 1 are fixed to the device by a fixed shaft 9 and a fastener 10; a thermocouple 6 is arranged on the cylinder, and the opening of the cooling water inlet regulating valve 4 is controlled by the temperature signal of the thermocouple 6; a rotary film nozzle 2 is arranged at the outlet of the cooling water inlet pipe 1, which can atomize the cooling water to facilitate cooling and prevent fly ash in the synthesis gas from clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the overall structure of the present invention.

[0016] Figure 2 for Figure 1 Center AA view.

[0017] Figure 3 for Figure 1 Center B view. DETAILED DESCRIPTION

[0018] Specific implementation method 1: Combination Figure 1-Figure 3 The present embodiment is described as a synthesis gas temperature reduction device, which comprises a throttling orifice plate 3, a regulating valve 4, a thermocouple 6, a cooling water pipe 11, two cooling water inlet pipes 1, and a plurality of rotating film nozzles 2;

[0019] The regulating valve 4 is installed on the cooling water pipe 11, and the water outlet ends of the cooling water pipe 11 are respectively connected to the two cooling water inlet pipes 1, and the two cooling water inlet pipes 1 are inserted on the connecting tube. At least two branch pipes are installed at the outlet end of one cooling water inlet pipe 1, and at least one branch pipe is installed at the outlet end of the other cooling water inlet pipe 1. A rotary film nozzle 2 is installed on each branch pipe, and a throttling orifice plate 3 is installed on the cooling water inlet pipe 1 of at least one branch pipe. Multiple rotary film nozzles 2 are arranged in the connecting tube, and a thermocouple 6 is installed on the connecting tube. The thermocouple 6 is used to measure the temperature of the equipment tube and adjust the opening of the regulating valve 4 according to the temperature of the equipment tube.

[0020] In this embodiment, a throttle plate 3 is arranged on the cooling water inlet pipe 1 to make the resistance in each branch pipe similar to control the flow of each nozzle to be consistent. The cooling water is controlled to enter the equipment in a mist form through the rotating film nozzle 2, which is conducive to cooling and is not prone to blockage.

[0021] Specific implementation method 2: Combination Figure 1 This embodiment describes a synthesis gas temperature reduction device in which a refractory casting layer is provided on the inner wall of the equipment cylinder. Other methods are the same as those in the first embodiment.

[0022] Specific implementation method three: Combination Figure 1 The present embodiment is described as a synthesis gas cooling device, which also includes refractory fibers 7 , which are wrapped around the cooling water inlet pipe 1 , and the refractory fibers 7 are located between the refractory casting layer and the cooling water inlet pipe 1 .

[0023] The refractory fiber 7 is used to prevent the metal of the pipe and the shell from overheating. Other methods are the same as those of the first embodiment.

[0024] Specific implementation method four: Combination Figure 1 To illustrate the present embodiment, a synthesis gas cooling device is described in the present embodiment, which also includes six support plates 5. The inlet of each cooling water inlet pipe 1 is connected to the outlet of the cooling water pipe 11 through a flange. Three support plates 5 are provided between each cooling water inlet pipe 1 and the pipe of the equipment barrel, and the three support plates 5 are evenly distributed radially along the cooling water inlet pipe 1.

[0025] The function of setting the support plate 8 is to prevent the cooling water pipe from vibrating. Other methods are the same as those in the first embodiment.

[0026] Specific implementation method five: Combination Figure 2 The present embodiment is described as a synthesis gas cooling device, which also includes a plurality of support plates 8 , and the cooling water inlet pipe 1 and the connected branch pipe are fixedly connected via the support plates 8 .

[0027] The function of the support plate 8 in this embodiment is to make the pipe connection more stable and to prevent rooting at the device housing. Other methods are the same as those in the first embodiment.

[0028] Specific implementation method six: Combination Figure 1 and Figure 3 To illustrate this embodiment, a synthesis gas cooling device is described in this embodiment, which also includes a fixed shaft 9 and a fastener 10. A fixed shaft 9 is provided between two cooling water inlet pipes 1. One end of the fixed shaft 9 is welded and fixed to one cooling water inlet pipe 1, and the other end of the fixed shaft 9 is connected to the other cooling water inlet pipe 1 through the fastener 10.

[0029] In this embodiment, the fastener 10 is connected to the cooling water inlet pipe 1 to achieve a flexible connection, so that the two cooling water inlet pipes 1 are assembled inside the device, so that the device has expansion space when it expands at high temperature. Other methods are the same as the specific embodiment 1.

[0030] The above-mentioned specific implementation can be partially adjusted in different ways by those skilled in the art without departing from the principle and purpose of the present invention. The protection scope of the present invention shall be based on the claims and shall not be limited by the above-mentioned specific implementation. Each implementation scheme within its scope shall be subject to the constraints of the present invention.

Claims

1. A synthesis gas temperature reduction device, characterized in that: It comprises a throttling orifice plate (3), a regulating valve (4), a thermocouple (6), a cooling water pipe (11), two cooling water inlet pipes (1), and a plurality of rotating film nozzles (2); The regulating valve (4) is installed on a cooling water pipe (11); the water outlet end of the cooling water pipe (11) is respectively connected to two cooling water inlet pipes (1); the two cooling water inlet pipes (1) are inserted into a connecting tube; at least two branch pipes are installed at the outlet end of one cooling water inlet pipe (1); at least one branch pipe is installed at the outlet end of the other cooling water inlet pipe (1); each branch pipe is installed with a spinning nozzle (2); a throttling orifice plate (3) is installed on the cooling water inlet pipe (1) of at least one branch pipe; a plurality of spinning nozzles (2) are arranged in the connecting tube; a thermocouple (6) is installed on the connecting tube; the thermocouple (6) is used to measure the temperature of the equipment tube; and the opening of the regulating valve (4) is adjusted according to the temperature of the equipment tube.

2. The synthesis gas temperature reduction device according to claim 1, characterized in that: A refractory casting layer is provided on the inner wall of the equipment cylinder.

3. The synthesis gas temperature reduction device according to claim 1, characterized in that: It also includes refractory fibers (7), which are wrapped around the cooling water inlet pipe (1), and the refractory fibers (7) are located between the refractory casting layer and the cooling water inlet pipe (1).

4. The synthesis gas temperature reduction device according to claim 1, characterized in that: It also includes six support plates (5), the inlet of each cooling water inlet pipe (1) is connected to the outlet of the cooling water pipe (11) via a flange, three support plates (5) are provided between each cooling water inlet pipe (1) and the pipe of the equipment cylinder, and the three support plates (5) are evenly distributed along the radial direction of the cooling water inlet pipe (1).

5. The synthesis gas temperature reduction device according to claim 1, characterized in that: It also includes a plurality of supporting plates (8), and the cooling water inlet pipe (1) and the connected branch pipe are fixedly connected via the supporting plates (8).

6. The synthesis gas temperature reduction device according to claim 1, characterized in that: It also includes a fixed shaft (9) and a fastener (10). The fixed shaft (9) is arranged between the two cooling water inlet pipes (1). One end of the fixed shaft (9) is welded and fixed to one cooling water inlet pipe (1), and the other end of the fixed shaft (9) is connected to the other cooling water inlet pipe (1) via the fastener (10).

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