Pretreatment system for coal gas processing
Through the combination of oil-water separator and heating component, multi-stage oil removal and dehydration purification is achieved, which solves the problem of poor gas purification effect of existing devices under high humidity conditions, improves the oil removal and dehydration effect of gas, and ensures the stability of gas quality.
Patent Information
- Application Number
- CN202422594245.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-10-28
AI Technical Summary
Existing gas purification devices have difficulty in effectively removing tiny oil droplets under high humidity conditions, resulting in unstable gas quality.
A combination of an oil-water separator, an oil removal component and a heating component is used to pre-treat the coal gas through the oil-water separation, oil removal and heating steps, including an oil-water separator, a first and a second oil remover, a heat exchange unit and a steam moisture separator, to achieve multi-stage oil removal and dehydration purification.
It improves the oil removal and purification effect of coal gas, ensures the stability and high efficiency of coal gas quality, and can effectively remove oil-water mixtures under high humidity conditions.
Smart Images
Figure CN223381370U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal gas purification, in particular to a pretreatment system for coal gas processing. Background Art
[0002] Traditional gas purification equipment typically uses a single oil-water separator for primary purification, followed by simple heating to remove residual moisture. In addition, in some applications, specific filter elements are used to further remove oil from the gas. While these methods can improve gas quality to a certain extent, they still have many shortcomings in actual operation.
[0003] However, existing oil-water separation technologies and subsequent oil removal methods often struggle to efficiently and thoroughly remove the oil-water mixture from coal gas. This is especially true when faced with complex working conditions such as high humidity and the presence of numerous tiny oil droplets. Traditional devices struggle to achieve ideal purification results, resulting in inconsistent quality in the final coal gas output. Utility Model Content
[0004] (1) Purpose of the utility model
[0005] In order to solve the technical problems existing in the background technology, the utility model proposes a pretreatment system for coal gas processing. The device can effectively remove oil from the coal gas after water separation through an oil removal component, thereby reducing the water content in the coal gas during oil removal, thereby effectively improving the purification effect of coal gas oil removal, and further dehydrating and purifying the coal gas through a heating component, thereby effectively improving the effect of coal gas pretreatment.
[0006] (2) Technical solution
[0007] The utility model provides a pretreatment system for coal gas processing, comprising an oil-water separator and a heating component for heating the coal gas, the gas outlet end of the oil-water separator and the gas inlet end of the heating component are connected to each other, and an oil removal component for removing oil from the coal gas is provided between the gas outlet end of the oil-water separator and the gas inlet end of the heating component.
[0008] Preferably, the oil removal assembly includes a first oil remover and a second oil remover, the air inlet end of the first oil remover and the air inlet end of the second oil remover are both interconnected with the air outlet end of the oil-water separator, and the air outlet ends of the first oil remover and the second oil remover are both interconnected with the air inlet end of the heating assembly.
[0009] Preferably, the heating assembly includes a heat exchange unit and a steam moisture separator for supplying heat to the heat exchange unit, and the air outlet end of the first deoiler and the air outlet end of the second deoiler are both connected to the air inlet end of the heat exchange unit.
[0010] Preferably, the heat exchange unit includes a main heat exchanger and an intermediate exchanger, the air inlet end of the main heat exchanger is interconnected with the air outlet end of the first oil remover and the air outlet end of the second oil remover, the air outlet end of the main heat exchanger is interconnected with the air inlet end of the intermediate exchanger, and the air outlet end of the steam moisture separator is interconnected with the heat inlet end of the intermediate exchanger.
[0011] Preferably, the outlet temperature of the intermediate exchanger is 260°C.
[0012] Preferably, a first heater for heating the coal gas is provided between the oil-water separator and the first oil remover, and a second heater for heating the coal gas is provided between the oil-water separator and the second oil remover.
[0013] Preferably, a three-way solenoid valve is provided between the air outlet end of the main heat exchanger and the air outlet end of the intermediate exchanger.
[0014] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:
[0015] In the present invention, during the pretreatment process of coal gas, the water in the coal gas is separated by the oil-water separator, and the separated coal gas enters the oil removal component, and the oil removal operation of the coal gas is completed by the oil removal component. After the oil removal is completed, the coal gas can be heated by the heating component, and the coal gas is further dehydrated and purified, thereby completing the pretreatment operation of the coal gas. The device can effectively deoil the coal gas after the water separation through the oil removal component, thereby reducing the water in the coal gas during oil removal, thereby effectively improving the oil removal and purification effect of the coal gas, and further dehydrates and purifies the coal gas through the heating component, thereby effectively improving the effect of the coal gas pretreatment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a process flow chart of a pretreatment system for coal gas processing proposed by the utility model.
[0017] Figure numerals: 1. Oil-water separator; 2. First oil remover; 3. Second oil remover; 4. Main heat exchanger; 5. Intermediate exchanger; 6. Steam-water separator. DETAILED DESCRIPTION
[0018] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.
[0019] In the description of the utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of the utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0020] In the description of the utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" can mean fixed connection, welding, riveting, bonding, etc., or detachable connection, threaded connection, key connection, pin connection, etc., or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood by those skilled in the art in specific circumstances.
[0021] like Figure 1 As shown, the utility model proposes a pretreatment system for coal gas processing, including an oil-water separator 1 and a heating component for heating the coal gas, the gas outlet end of the oil-water separator 1 and the gas inlet end of the heating component are connected to each other, and an oil removal component for removing oil from the coal gas is provided between the gas outlet end of the oil-water separator 1 and the gas inlet end of the heating component.
[0022] In the present invention, during the pretreatment of coal gas, the water in the coal gas is separated by the oil-water separator 1, and the separated coal gas enters the oil removal component, and the oil removal operation of the coal gas is completed by the oil removal component. After the oil removal is completed, the coal gas can be heated by the heating component, and the coal gas is further dehydrated and purified, thereby completing the pretreatment operation of the coal gas. The device can effectively deoil the coal gas after the water is separated through the oil removal component, thereby reducing the water in the coal gas during oil removal, thereby effectively improving the oil removal purification effect of the coal gas, and further dehydrates and purifies the coal gas through the heating component, thereby effectively improving the effect of the coal gas pretreatment.
[0023] In an optional embodiment, the oil removal assembly includes a first oil remover 2 and a second oil remover 3, the air inlet end of the first oil remover 2 and the air inlet end of the second oil remover 3 are interconnected with the air outlet end of the oil-water separator 1, and the air outlet ends of the first oil remover 2 and the second oil remover 3 are interconnected with the air inlet end of the heating assembly. The coal gas can be deoiled simultaneously by the first oil remover 2 and the second oil remover 3, thereby effectively improving the working efficiency of deoiling the coal gas. In this embodiment, the first oil remover 2 and the second oil remover 3 can both adopt YZS-2 type; in other embodiments, the first oil remover 2 and the second oil remover 3 can also adopt YZS-3 type.
[0024] In an optional embodiment, the heating component includes a heat exchange unit and a steam moisture separator 6 for supplying heat to the heat exchange unit. The outlet end of the first oil remover 2 and the outlet end of the second oil remover 3 are both connected to the inlet end of the heat exchange unit. The coal gas can be effectively heated by the heat exchange unit, and the coal gas can be further purified after heating, thereby effectively improving the effect of the device on pre-treatment of the coal gas. The steam generated in the production process can be utilized by the steam moisture separator 6 and supplied to the heat exchange unit for use, and the water in the hot steam can also be separated by the steam moisture separator 6 before use, thereby reducing the quality of the coal gas purification during the heat exchange process.
[0025] In an optional embodiment, the heat exchange unit includes a main heat exchanger 4 and an intermediate exchanger 5, the air inlet end of the main heat exchanger 4 is interconnected with the air outlet end of the first oil remover 2 and the air outlet end of the second oil remover 3, the air outlet end of the main heat exchanger 4 is interconnected with the air inlet end of the intermediate exchanger 5, and the air outlet end of the steam moisture separator 6 is interconnected with the heat inlet end of the intermediate exchanger 5. By setting the main heat exchanger 4 and the intermediate exchanger 5, the coal gas can be fully heated to the required temperature to improve the purification efficiency, and the heating device of the intermediate exchanger 5 is the steam moisture separator 6, which can remove moisture from the hot steam by the steam moisture separator 6, thereby effectively reducing the moisture in the hot steam entering the intermediate exchanger 5, thereby further improving the purification quality of the coal gas. In this embodiment, the main heat exchanger 4 and the intermediate exchanger 5 can both adopt hybrid heat exchangers. In other embodiments, the main heat exchanger and the intermediate exchanger 5 can also adopt plate heat exchangers.
[0026] In an optional embodiment, the outlet temperature of the intermediate exchanger 5 is 260° C. When the outlet temperature of the intermediate exchanger 5 is 260° C., the moisture in the coal gas can be effectively removed.
[0027] In an optional embodiment, a first heater for heating the coal gas is provided between the oil-water separator 1 and the first oil remover 2, and a second heater for heating the coal gas is provided between the oil-water separator 1 and the second oil remover 3. By adding the first heater and the second heater, a preheating link can be effectively added when the coal gas is deoiled, which effectively increases the initial temperature of the coal gas entering the subsequent treatment process, thereby improving the oil-water separation effect, reducing the load of the first oil remover 2 and the second oil remover 3, and improving the overall efficiency and stability of the coal gas purification.
[0028] In an optional embodiment, a three-way solenoid valve is provided between the gas outlet end of the main heat exchanger 4 and the gas outlet end of the intermediate exchanger 5. Through the three-way solenoid valve, the residence time of the gas in the main heat exchanger 4 or the intermediate exchanger 5 can be selectively increased or decreased according to the actual demand of the gas, so as to accurately control the final temperature and dryness of the gas.
[0029] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.
Claims
1. A pretreatment system for coal gas processing, characterized in that: The invention comprises an oil-water separator (1) and a heating component for heating the coal gas, wherein the gas outlet end of the oil-water separator (1) and the gas inlet end of the heating component are connected to each other, and an oil removal component for removing oil from the coal gas is provided between the gas outlet end of the oil-water separator (1) and the gas inlet end of the heating component.
2. A pretreatment system for coal gas processing according to claim 1, characterized in that: The oil removal assembly comprises a first oil remover (2) and a second oil remover (3), the air inlet end of the first oil remover (2) and the air inlet end of the second oil remover (3) are both communicated with the air outlet end of the oil-water separator (1), and the air outlet ends of the first oil remover (2) and the second oil remover (3) are both communicated with the air inlet end of the heating assembly.
3. A pretreatment system for coal gas processing according to claim 2, characterized in that: The heating assembly comprises a heat exchange unit and a steam moisture separator (6) for supplying heat to the heat exchange unit, and the air outlet end of the first deoiler (2) and the air outlet end of the second deoiler (3) are both connected to the air inlet end of the heat exchange unit.
4. A pretreatment system for coal gas processing according to claim 3, characterized in that: The heat exchange unit comprises a main heat exchanger (4) and an intermediate exchanger (5); the air inlet end of the main heat exchanger (4) is in communication with the air outlet end of the first deoiler (2) and the air outlet end of the second deoiler (3); the air outlet end of the main heat exchanger (4) is in communication with the air inlet end of the intermediate exchanger (5); and the air outlet end of the steam moisture separator (6) is in communication with the heat inlet end of the intermediate exchanger (5).
5. A pretreatment system for coal gas processing according to claim 4, characterized in that: The outlet temperature of the intermediate exchanger (5) is 260°C.
6. A pretreatment system for coal gas processing according to claim 2, characterized in that: A first heater for heating the coal gas is provided between the oil-water separator (1) and the first deoiler (2), and a second heater for heating the coal gas is provided between the oil-water separator (1) and the second deoiler (3).
7. A pretreatment system for coal gas processing according to claim 4, characterized in that: A three-way solenoid valve is provided between the air outlet end of the main heat exchanger (4) and the air outlet end of the intermediate heat exchanger (5).