Novel coal gas cooling device

Abstract

The utility model discloses a novel coal gas cooling device which comprises at least two cooling water cylinders which are sequentially arranged from the center to the outer side, and a coal discharging channel for coal to fall is formed on the inner periphery of the cooling water cylinder located on the innermost side. Gas outlet channels allowing gas to flow are formed between every two adjacent cooling water cylinders and between the cooling water cylinder on the outermost side and the inner wall of the gas producer; a water inlet pipe is arranged at the bottom of the cooling water cylinder, a water inlet main connector is arranged at the end of the water inlet pipe, water inlet branch connectors which are in one-to-one correspondence with the cooling water cylinder and are communicated with the cooling water cylinder are arranged on the water inlet pipe, a water outlet pipe is arranged at the top of the cooling water cylinder, and a water outlet main connector is arranged at the end of the water outlet pipe. The water outlet pipe is provided with water outlet branch joints which are in one-to-one correspondence with the cooling water cylinders and are communicated with the cooling water cylinders; the coal gas cooler has the beneficial effects that through the arrangement of the plurality of cooling water cylinders, the contact area between coal gas and the cooling water cylinders in the upward flowing process is increased, and further, the cooling effect on the coal gas is better.

Description

Technical Field

[0001] The utility model relates to the field of coal gas production equipment, in particular to a novel coal gas cooling device. Background Art

[0002] A gasifier is a production equipment that converts coal into combustible gas - coal gas (mainly composed of CO, H2, CH4, etc.). Its working principle is to screen the coal that meets the gasification process indicators and add it into the gasifier through a stoker. A mixture of self-produced steam and air is blown into the bottom of the furnace as a gasifying agent. The coal undergoes physical and chemical reactions in the furnace to generate combustible gas for users to use.

[0003] Since the produced coal gas is too hot, it needs to be cooled before being collected. In order to effectively cool the coal gas and reliably recover the waste heat generated during the cooling process, the applicant applied for a patent entitled "A coal gas cooling device for a coal gas generator, application number 2023221922244" on August 15, 2023. The patent comprises a cylinder body, the upper and lower parts of the cylinder body are respectively provided with an upper collecting box and a lower collecting box separated from each other, the outer wall of the cylinder body is provided with a water inlet pipe section at the lower collecting box, and is connected to the lower collecting box, the outer wall of the cylinder body is provided with a water outlet pipe section at the upper collecting box, and is connected to the upper collecting box, a plurality of convection pipes for connecting the upper collecting box and the lower collecting box are circumferentially arranged on the inner wall of the cylinder, the cooling water enters the convection pipe from the water inlet pipe section to absorb heat and cool the coal gas generated by the coal gas generator, and is then discharged from the water outlet pipe section. However, during use, it was found that the device still has the following shortcomings: first, there is only one cylinder, resulting in poor cooling effect on the coal gas; second, the convection tube is located on the inner side of the cylinder. When adding coal to the gas generator, the coal falls on the convection tube, easily causing damage to it.

[0004] To this end, our company has proposed a new type of gas cooling device. Summary of the Invention

[0005] The purpose of the utility model is to provide a novel coal gas cooling device, which can reliably cool the coal gas.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A novel coal gas cooling device includes a cooling water cylinder, the inner periphery of the cooling water cylinder forms a coal lowering channel for coal to fall, and an outlet channel for coal gas to flow is formed between the cooling water cylinder and the inner wall of the coal gas generator;

[0008] A water inlet pipe is provided at the bottom of the cooling water cylinder, a water inlet main joint is provided at the end of the water inlet pipe, and a water inlet branch joint connected to the cooling water cylinder is provided on the water inlet pipe. A water outlet pipe is provided at the top of the cooling water cylinder, a water outlet main joint is provided at the end of the water outlet pipe, and a water outlet branch joint connected to the cooling water cylinder is provided on the water outlet pipe.

[0009] Preferably, the device comprises at least two cooling water cylinders arranged in sequence from the center to the outside, the inner periphery of the innermost cooling water cylinder forms a coal lowering channel for coal to fall, and an outlet channel for gas to flow is formed between two adjacent cooling water cylinders and between the outermost cooling water cylinder and the inner wall of the gas generator;

[0010] A water inlet pipe is provided at the bottom of the cooling water cylinder, a water inlet main joint is provided at the end of the water inlet pipe, and a water inlet branch joint is provided on the water inlet pipe, which corresponds to and is connected to the cooling water cylinder one by one. A water outlet pipe is provided at the top of the cooling water cylinder, a water outlet main joint is provided at the end of the water outlet pipe, and a water outlet branch joint is provided on the water outlet pipe, which corresponds to and is connected to the cooling water cylinder one by one.

[0011] Preferably, an outlet pipe for gas flow is also provided through the cooling water cylinder.

[0012] Preferably, the cooling water cylinder comprises a first cylinder located inside and a second cylinder located outside, and the top and bottom of the first cylinder and the second cylinder are both provided with a sealing head.

[0013] Preferably, the water inlet branch joint is arranged on the head located at the bottom, and the water outlet branch joint is arranged on the head located at the top.

[0014] Preferably, a heat absorbing sheet is provided in the air outlet channel formed between the two cooling water cylinders.

[0015] Preferably, one side of the heat absorbing sheet is connected to the outer wall of the second cylinder located on the inner cooling water cylinder, and the other side of the heat absorbing sheet is connected to the inner wall of the first cylinder located on the outer cooling water cylinder.

[0016] The beneficial effects of the utility model are:

[0017] 1. The arrangement of multiple cooling water cylinders increases the contact area between the gas and the cooling water cylinders during its upward flow, thereby achieving a better cooling effect on the gas.

[0018] 2. An air outlet pipe is provided in the cooling water cylinder, and a heat absorbing sheet is provided in the air outlet channel, which can further improve the cooling efficiency of the coal gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the utility model;

[0020] Figure 2 for Figure 1 A-A sectional view;

[0021] Figure 3 for Figure 1 B-B sectional view;

[0022] Figure 4 This is a schematic diagram of the utility model in use in a gas generator.

[0023] The accompanying drawings are for illustrative purposes only and are not to be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Example 1

[0026] like Figure 1 As shown, a novel coal gas cooling device comprises three cooling water cylinders 11 arranged sequentially from the center outward. The inner periphery of the innermost cooling water cylinder 11 forms a coal lowering channel 15 for coal to fall. Gas outlet channels 12 for gas to flow are formed between two adjacent cooling water cylinders and between the outermost cooling water cylinder and the inner wall of the gas generator.

[0027] like Figure 2 As shown, a water inlet pipe 14 is provided at the bottom of the cooling water cylinder 11, a water inlet main joint 141 is provided at the end of the water inlet pipe 14, a water inlet branch joint 142 is provided on the water inlet pipe 14 and corresponds to and communicates with the cooling water cylinder 11 on a one-to-one basis, and a water outlet pipe 13 is provided at the top of the cooling water cylinder 11, a water outlet main joint 131 is provided at the end of the water outlet pipe 13, and a water outlet branch joint 132 is provided on the water outlet pipe 13 and corresponds to and communicates with the cooling water cylinder 11 on a one-to-one basis. During the gasification process, when the high-temperature coal gas passes through the gas outlet channel 12 and flows upward continuously, it heats the water in the cooling water cylinder 11, and cold water enters from the bottom of the cooling water cylinder 11 and flows out from the top. Because the water outlet pipe 13 is located at the top, water will not flow out until the cooling water cylinder 11 is filled, thereby avoiding the possibility of the cooling water cylinder 11 burning dry. Water can circulate in the cooling water cylinder 11 and the external heat exchanger (not shown in the figure) to reuse the waste heat of the coal gas. The lower the temperature of the coal gas is reduced by this device, the more heat is displaced by the cooling water. That is, while reliably reducing the gas temperature, the utilization efficiency of the waste heat of the coal gas is also improved.

[0028] like Figure 4The figure shows a schematic diagram of the device in use within a gasifier 2. A support 21 is provided within the gasifier 2 for placing the gas cooling device 1. A coal inlet 22 for adding coal is provided at the top center of the gasifier 2. An outlet 23 for discharging gas is provided at the top of the gasifier 2. During use, the sidewall of the gasifier 2 is provided with openings that mate with the water supply and outlet connectors 131 and the water inlet connector 141. After a water pipe is inserted into the openings and connected to the water supply and outlet connectors 131 and the water inlet connector 141, the openings are sealed to prevent gas leakage.

[0029] like Figure 2 and Figure 3 As shown, for ease of processing, in this embodiment, the cooling water cylinder 11 is composed of a first cylinder 111 located on the inside and a second cylinder 112 located on the outside. Sealing heads 114 are welded to the top and bottom of the first and second cylinders 111, 112, respectively. Sealing heads 114 can be common forms such as U-shaped or spherical. An inlet branch joint 142 is welded to the bottom of the head 114, and an outlet branch joint 132 is provided on the top of the head 114.

[0030] To further improve the cooling efficiency of the coal gas, an outlet pipe 113 for the coal gas is provided through the cooling water cylinder 11. The outlet pipe 113 passes through the upper and lower sealing heads 114 of the cooling water cylinder 11, without affecting the sealed flow of water inside. It also provides an additional flow channel for the coal gas, further reducing the temperature of the coal gas flowing out of the gasifier.

[0031] like Figure 1 and Figure 3 As shown, a heat absorbing sheet 121 is provided in the gas outlet channel 12. The heat absorbing sheet 121 can further conduct the temperature difference between the high-temperature gas and the low-temperature water, promote heat exchange, and reduce the gas temperature.

[0032] One side of the heat-absorbing sheet 121 is connected to the outer wall of the second cylinder 112 located inside the cooling water cylinder 11, while the other side of the heat-absorbing sheet 121 is connected to the inner wall of the first cylinder 111 located outside the cooling water cylinder 11. This not only reduces the gas temperature but also provides a certain degree of connection and tightening of the adjacent cooling water cylinders 11, making the device more integrated.

[0033] When the device is in use, the diameter of the coal lowering channel 15 is 800 mm, which can meet the coal adding demand of the gasification process; the radius difference between the first cylinder 111 and the second cylinder 112 in the cooling water cylinder 11 is 133 mm, and the radius difference between the second cylinder 112 of the current cooling water cylinder 11 and the first cylinder 111 of the cooling water cylinder 11 outside it (i.e., the gas outlet channel 12) is 50 mm; at the same time, the diameter of the gas outlet pipe 113 is 76 mm, which can achieve maximum efficiency in cooling the gas while satisfying the flow of gas.

[0034] Depending on the cooling speed requirement of the gasifier or the size of the gasifier, two cooling water cylinders or more than three cooling water cylinders may also be provided.

[0035] Example 2

[0036] The gas cooling device of this embodiment is mainly used in some small-sized gas generators. Since the furnace body is small and the amount of gas generated is small, only one cooling water cylinder 11 is provided while satisfying the need to cool the gas.

[0037] The remaining structures of this embodiment are consistent with or similar to those of the first embodiment. For example, the cooling water cylinder 11 is welded together by a first cylinder 111, a second cylinder 112, and a head 114. An air outlet pipe 113 is provided through the cooling water cylinder 11. Furthermore, a heat absorbing sheet 121 can be welded to the outside of the cooling water cylinder 11. Only one side of the heat absorbing sheet 121 needs to be connected to the cooling water cylinder 11.

[0038] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model shall fall within the scope of protection of the technical solution of the utility model.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0040] If words such as "first" and "second" are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, the above words have no special meaning.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A new type of gas cooling device, characterized by: The cooling water cylinder comprises a cooling water cylinder, the inner periphery of the cooling water cylinder forms a coal lowering channel for coal to fall, and a gas outlet channel for gas to flow is formed between the cooling water cylinder and the inner wall of the gas generator; A water inlet pipe is provided at the bottom of the cooling water cylinder, a water inlet main joint is provided at the end of the water inlet pipe, and a water inlet branch joint connected to the cooling water cylinder is provided on the water inlet pipe. A water outlet pipe is provided at the top of the cooling water cylinder, a water outlet main joint is provided at the end of the water outlet pipe, and a water outlet branch joint connected to the cooling water cylinder is provided on the water outlet pipe.

2. A novel gas cooling device according to claim 1, characterized in that: The gas generator comprises at least two cooling water cylinders arranged in sequence from the center to the outside, wherein the inner periphery of the innermost cooling water cylinder forms a coal lowering channel for coal to fall, and gas outlet channels for gas to flow are formed between two adjacent cooling water cylinders and between the outermost cooling water cylinder and the inner wall of the gas generator; A water inlet pipe is provided at the bottom of the cooling water cylinder, a water inlet main joint is provided at the end of the water inlet pipe, and a water inlet branch joint is provided on the water inlet pipe, which corresponds to and is connected to the cooling water cylinder one by one. A water outlet pipe is provided at the top of the cooling water cylinder, a water outlet main joint is provided at the end of the water outlet pipe, and a water outlet branch joint is provided on the water outlet pipe, which corresponds to and is connected to the cooling water cylinder one by one.

3. A novel coal gas cooling device according to claim 1 or 2, characterized in that: An outlet pipe for gas flow is also provided through the cooling water cylinder.

4. A novel coal gas cooling device according to claim 1 or 2, characterized in that: The cooling water cylinder comprises a first cylinder located inside and a second cylinder located outside. The tops and bottoms of the first cylinder and the second cylinder are both provided with sealing heads.

5. A novel gas cooling device according to claim 4, characterized in that: The water inlet branch joint is arranged on the head located at the bottom, and the water outlet branch joint is arranged on the head located at the top.

6. A novel gas cooling device according to claim 4, characterized in that: A heat absorbing sheet is arranged in the air outlet channel formed between the two cooling water cylinders.

7. A novel coal gas cooling device according to claim 6, characterized in that: One side of the heat absorbing plate is connected to the outer wall of the second cylinder located at the inner cooling water cylinder, and the other side of the heat absorbing plate is connected to the inner wall of the first cylinder located at the outer cooling water cylinder.

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