Water jacket for cooling gas furnace

Abstract

The utility model discloses a water jacket for cooling a gas furnace, which comprises a cylinder body, an upper collecting box, a jacket pipe and a lower collecting box are respectively arranged on the outer side of the cylinder body from top to bottom, a water outlet pipe section is arranged on the upper collecting box, a water inlet pipe section is arranged on the lower collecting box, and a flow channel for cooling liquid to flow is formed between the jacket pipe and the cylinder body. The section of the jacketed pipe is semi-elliptical; the utility model has the beneficial effects that: through the arrangement of the semi-elliptical jacketed pipe, the contact surface between cooling water and the cylinder body is reduced, so that the furnace body is prevented from being cooled excessively, the water consumption is reduced, the coal content in slag is reduced, and the waste of coal resources is avoided.

Description

Technical Field

[0001] The utility model relates to the field of coal gas production equipment, in particular to a water jacket used for cooling a coal gas furnace. Background Art

[0002] Gasifiers are primarily used to produce coal gas, operating by utilizing the reaction between coal combustion and steam. The water jacket is a key component in gasifiers. Its purpose is to utilize the jacket's cooling effect to lower the temperature of the coal near the jacket wall, preventing it from overheating and becoming trapped in the furnace.

[0003] The water jacket used in the prior art, such as Figure 1 As shown, a whole circular cylinder is set outside the furnace body, and water flows between the furnace body and the circular cylinder to cool the furnace body. However, this type of water jacket takes away too much heat during the gas production process, resulting in overcooling.

[0004] The applicant applied for a patent for "a heat-insulating water jacket for a gas generator, application number 2023209907625" on April 27, 2023. Figure 3 As shown, the jacketed tube is a 133mm or 159mm diameter steel pipe cut in the middle and then welded to the outside of the cylinder. However, during use, this device suffers from excessive heat removal from the water jacket, leading to overcooling. This not only reduces gas production efficiency but also causes excessive heat dissipation, resulting in excessive steam production within the water jacket and significantly increasing cooling water consumption. Furthermore, overcooling can lead to incomplete combustion of coal in the inner and outer annular zones of the furnace, increasing the coal content in the slag and wasting coal resources. Summary of the Invention

[0005] The utility model aims to provide a water jacket for cooling a gas furnace, so as to ensure that the furnace body is cooled appropriately.

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

[0007] A water jacket for cooling a gas furnace comprises a cylinder, on the outside of which an upper header, a jacket pipe and a lower header are arranged from top to bottom, the upper header is provided with a water outlet pipe section, the lower header is provided with a water inlet pipe section, a flow channel for cooling liquid is formed between the jacket pipe and the cylinder, and the cross-section of the jacket pipe is semi-elliptical.

[0008] Preferably, the short side of the semi-elliptical jacket is in contact with the outer side of the cylinder.

[0009] Preferably, the short side length of the semi-elliptical jacket is 80-120 mm.

[0010] Preferably, the jacket pipes are arranged on the outer side of the cylinder body at multiple positions, and the distance between two adjacent jacket pipes is 30-70 mm.

[0011] The utility model has the beneficial effects that:

[0012] 1. By arranging the semi-elliptical jacket pipes, the contact area between the cooling water and the cylinder body is reduced, thereby avoiding excessive cooling of the furnace body, reducing the water consumption, and also reducing the coal content in the slag, thereby avoiding the waste of coal resources.

[0013] 2. The jacket pipes are made by flattening circular steel pipes, thereby reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a front view of the present application;

[0015] Figure 2 is Figure 1 A-A sectional view of the present application;

[0016] Figure 3 is a schematic view of a water jacket applied by the applicant before the present application.

[0017] The drawings are only used for illustrative purposes and should not be understood as limiting the present patent; in order to better illustrate the present embodiment, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0018] The present utility model will be further described below in combination with the drawings. EMBODIMENT

[0019] As shown in Figure 1 and Figure 2 , a water jacket for cooling a coal gas furnace includes a cylinder body 1, the outer side of the cylinder body 1 is provided with an upper header 2, a jacket pipe 4 and a lower header 3 from top to bottom, the upper header 2 is provided with a water outlet pipe section 21, the lower header 3 is provided with a water inlet pipe section 31, the jacket pipe 4 and the cylinder body 1 form a flow channel 41 for cooling water to flow. During use, the cooling water enters the lower header 3 from the water inlet pipe section 31, then enters the flow channel 41, fills the flow channel 41 and then enters the upper header 2, and finally flows out along the water outlet pipe section 21, the cooling water circulates along the water inlet pipe section 31, the lower header 3, the flow channel 41, the upper header 2 and the water outlet pipe section 21 to cool the cylinder body 1 and ensure the combustion of coal inside to produce coal gas; the cross section of the jacket pipe 4 is semi-elliptical, which can reduce the contact area between the cooling water and the cylinder body and avoid excessive cooling of the cylinder body 1.

[0020] As shown in Figure 2As shown, the short side of the semi-elliptical jacket pipe 4 is attached to the outer side of the cylinder 1. Reducing the contact area of the cooling water with the cylinder does not reduce the cross section of the flow channel 41, so that the cooling water can flow smoothly in the flow channel.

[0021] The length L1 of the short side of the semi-elliptical jacket pipe 4 is 113 mm. The jacket pipe currently used is a steel pipe with a diameter of 133 mm or 159 mm, which is cut along the diameter and welded to the outer surface of the cylinder 1 to form a flow channel. It is found in use that the contact area of the cooling water with the cylinder is large, which can take away more heat. Therefore, in the embodiment, the steel pipe with a diameter of 133 mm or 159 mm is flattened (or flattened) to become an ellipse, and then cut along the short side of the ellipse and welded to the outer surface of the cylinder.

[0022] The jacket pipe 4 is uniformly arranged at multiple positions on the outer side of the cylinder 1, and the distance L2 between the adjacent two jacket pipes is 60 mm. The distance between the adjacent two jacket pipes of the semi-circular jacket pipe currently used is about 25 mm, which causes the cylinder to be excessively cooled, resulting in waste of coal resources. By increasing the distance between the adjacent two jacket pipes, the cooling temperature of the cylinder is more appropriate.

[0023] At present, the cylinder used in the gas producer has multiple sizes such as 260, 280, 300, 360 cm, etc. The semi-elliptical jacket pipe proposed in the application can appropriately cool the cylinder, reduce the water consumption, and also reduce the coal content in the slag.

[0024] The above embodiments are not limited in any form in terms of shape, material, structure, etc. of the utility model. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model are within the protection scope of the technical scheme of the utility model.

[0025] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as a limitation on the protection content of the utility model.

[0026] If the terms "first", "second" and the like are used to limit the parts in this document, those skilled in the art should know that "first", "second" are used only for the convenience of describing the utility model and simplifying the description, and have no special meaning unless otherwise stated.

[0027] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been explained in detail with reference to the foregoing examples, those skilled in the art should understand that: the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A water jacket for gas furnace cooling, comprising a cylinder, an upper header, a jacket pipe, and a lower header disposed on the outer side of the cylinder from top to bottom, the upper header being provided with a water outlet pipe section, the lower header being provided with a water inlet pipe section, and a flow channel for cooling liquid to flow formed between the jacket pipe and the cylinder, characterized in that: The cross section of the jacket tube is semi-elliptical.

2. The water jacket for gas furnace cooling according to claim 1, characterized in that: The short side of the semi-elliptical jacket tube is in contact with the outer side of the cylinder.

3. The water jacket for gas furnace cooling according to claim 1, characterized in that: The short side length of the semi-elliptical jacket tube is 80-120 mm.

4. The water jacket for gas furnace cooling according to claim 1, characterized in that: The jacket pipes are arranged at multiple locations outside the cylinder, and the distance between two adjacent jacket pipes is 30-70 mm.

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