Coke-oven gas compressor

Abstract

The utility model relates to the technical field of compressors, in particular to a coke-oven gas compressor which comprises a synthesis gas compressor body, a main motor, a liquid collecting and emptying tank, a first-stage separator component, a second-stage separator component, a first-stage cooler component, a second-stage cooler component, a first-stage front separator, a thin oil station component and a sewage collecting tank, a first-stage separator component, a second-stage separator component, a first-stage cooler component, a first-stage preposed separator and a liquid collecting and emptying tank are respectively arranged on one side, far away from the main motor, of the synthesis gas compressor body. The coke-oven gas compressor adopts a four-row two-stage compression structure, and as the first-stage gas quantity is large, the first-stage cylinders are divided into two, the two first-stage cylinders are arranged on one side, and the two second-stage cylinders are arranged on the other side, compared with a traditional double-first-stage and double-second-stage counter-dynamic balance structure, the coke-oven gas compressor has the advantages that the gas pulsation is smaller, and a pipeline system of the coke-oven gas compressor is simpler and more convenient; the air flow pulsation is avoided, and the long-period stable operation of a unit of the coke-oven gas compressor is ensured.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, specifically to a coke oven gas compressor. Background Technology

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas; it is the heart of a refrigeration system. Compressors are classified into reciprocating compressors, screw compressors, centrifugal compressors, linear compressors, etc. A reciprocating compressor generally consists of a housing, electric motor, cylinder, piston, control equipment, and cooling system.

[0003] Against the backdrop of the country's vigorous promotion of the upgrading and transformation of the coal chemical industry and the elimination of outdated production capacity, energy conservation, environmental protection, and the promotion of new technologies and new energy sources in the coal chemical industry are the current general trend. Among these, the project to produce LNG clean energy from the surplus coal gas of coking plants is a key national strategic project.

[0004] Since LNG is a clean energy source strongly promoted by the country, and my country is a major consumer and a country with a shortage of LNG, importing a large amount of LNG from Russia every year, it is imperative to develop the domestic LNG industry. The production of LNG from surplus coal gas in the coking industry has opened up the market for the production of LNG products using new coal chemical processes, which requires large reciprocating compressors with various compression media.

[0005] Therefore, we propose a coke oven gas compressor. Utility Model Content

[0006] The main purpose of this utility model is to provide a coke oven gas compressor that adopts a four-row two-stage compression structure. Due to the large volume of the first stage gas, the first stage cylinder is divided into two, with the two first stage cylinders arranged on one side and the two second stage cylinders arranged on the other side. Compared with the traditional dual-first stage and dual-second stage dynamic balance structure, the airflow pulsation is smaller, making the pipeline system of the coke oven gas compressor simpler, avoiding airflow pulsation, and ensuring the long-term stable operation of the coke oven gas compressor unit. This can effectively solve the problems in the background technology.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] The coke oven gas compressor includes a syngas compressor body, a main motor, a liquid collection and venting tank, a primary separator component, a secondary separator component, a primary cooler component, a secondary cooler component, a primary pre-separator, a thin oil station component, and a wastewater collection tank. The syngas compressor body is connected to the main motor on one side via a crankshaft and connecting rod. A main junction box is installed on one side of the main motor. The syngas compressor body, on the side away from the main motor, is respectively equipped with a primary separator component, a secondary separator component, a primary cooler component, a primary pre-separator, and a liquid collection and venting tank.

[0009] The syngas compressor body is equipped with a primary intake buffer component and a primary exhaust buffer component at one end, and a secondary intake buffer component and a secondary exhaust buffer component at the other end. A secondary cooler component is also connected to the end of the syngas compressor body near the secondary intake buffer component and the secondary exhaust buffer component.

[0010] The syngas compressor body is connected to the sewage collection tank via a pipeline assembly, and the syngas compressor body is also electrically connected to the PLC control cabinet.

[0011] By adopting the above technical solution, considering the high water content in the atmospheric coke oven gas compression medium, in order to prevent liquid slugging into the cylinder, the coke oven gas compressor is equipped with a first-stage pre-separator, and each stage of the cylinder is equipped with a gas-liquid separator after compression and cooling to separate liquid oil and water; each stage of the gas-liquid separator adopts an automatic liquid drainage device to ensure that the liquid level of the gas-liquid separator will not exceed the limit, and the coke oven gas compressor adopts an automatic gas volume regulation method.

[0012] Specifically, the synthesis gas compressor body is also equipped with a thin oil station component on the side near the main motor, and the thin oil station component is equipped with an independent oil tank.

[0013] By adopting the above technical solution, and by adding an automatic piston rod sinking monitoring device, a radial vibration transmitter is used to detect the sinking of each piston rod during reciprocating motion, thereby accurately determining the service life of vulnerable parts such as the support ring and piston ring; the average piston speed of this coke oven gas compressor is 3.5m / s, realizing an oil-free lubrication design for a large cylinder diameter and oil-free operation.

[0014] Specifically, a first liquid level gauge is installed at the top of the liquid collection and venting tank.

[0015] Specifically, the primary cooler component is located between the syngas compressor body and the primary pre-separator. The primary cooler component has a first air inlet and a first air outlet at its top and bottom ends, respectively. The primary cooler component has a first water outlet at its top end away from the first air inlet and a first water inlet at its bottom end away from the first water outlet.

[0016] Specifically, the sewage collection tank is provided with a mounting base at the bottom, a drain outlet at the lower part of one side, a second vent at the top, a second remote level gauge, and an automatic drain valve at the top.

[0017] Specifically, the sewage collection tank is provided with a second air inlet on the upper part of one side, and the sewage collection tank is also provided with a spare interface at the same height as the second air inlet on the side near the second air inlet.

[0018] The beneficial effects of this utility model are:

[0019] (1) The coke oven gas compressor described in this utility model adopts a four-row two-stage compression structure. Due to the large volume of the first stage gas, the first stage cylinder is divided into two. The two first stage cylinders are arranged on one side and the two second stage cylinders are arranged on the other side. Compared with the traditional dual first stage and dual second stage dynamic balance structure, the airflow pulsation is smaller, making the pipeline system of the coke oven gas compressor simpler and avoiding airflow pulsation. This ensures that the coke oven gas compressor unit operates stably for a long period of time. At the same time, the coke oven gas compressor adopts an automatic gas volume regulation method.

[0020] (2) The coke oven gas compressor described in this utility model takes into account the high water content in the atmospheric coke oven gas compression medium. In order to prevent liquid slugging into the cylinder, the coke oven gas compressor is equipped with a first-stage pre-separator, and each stage of the cylinder is equipped with a gas-liquid separator after compression and cooling to separate liquid oil and water. Each stage of the gas-liquid separator adopts an automatic liquid discharge device to ensure that the liquid level of the gas-liquid separator will not exceed the limit.

[0021] (3) The coke oven gas compressor described in this utility model is equipped with an automatic monitoring device for piston rod sinking. A radial vibration transmitter is used to detect the sinking of each piston rod in reciprocating motion, thereby accurately determining the service life of the vulnerable parts support ring and piston ring. The average piston speed of the coke oven gas compressor is 3.5m / s, realizing the oil-free lubrication design of the large cylinder diameter and oil-free operation. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the first-stage cooler component of this utility model;

[0025] Figure 3 This is a schematic diagram of the sewage collection tank structure of this utility model;

[0026] In the diagram: 1. Syngas compressor body; 2. Main motor; 3. Main junction box; 4. Liquid collection and venting tank; 5. First-stage intake buffer assembly; 6. First-stage exhaust buffer assembly; 7. Second-stage intake buffer assembly; 8. Second-stage exhaust buffer assembly; 9. First-stage separator assembly; 10. Second-stage separator assembly; 11. First-stage cooler assembly; 12. Second-stage cooler assembly; 13. First-stage pre-separator; 14. First level gauge; 15. Thin oil station assembly; 16. Wastewater collection tank; 17. Mounting base; 1101. First air inlet; 1102. First air outlet; 1103. First water inlet; 1104. First water outlet; 1601. Second air inlet; 1602. Second air outlet; 1603. Spare interface; 1604. Drainage port. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] As one embodiment of this utility model, such as Figures 1-3 As shown, the coke oven gas compressor of this utility model includes a syngas compressor body 1, a main motor 2, a liquid collection and venting tank 4, a primary separator component 9, a secondary separator component 10, a primary cooler component 11, a secondary cooler component 12, a primary pre-separator 13, a thin oil station component 15, and a wastewater collection tank 16. The syngas compressor body 1 is connected to the main motor 2 on one side via a crankshaft and connecting rod. A main junction box 3 is installed on one side of the main motor 2. The syngas compressor body 1, away from the main motor 2, is provided with the primary separator component 9, the secondary separator component 10, the primary cooler component 11, the primary pre-separator 13, and the liquid collection and venting tank 4.

[0029] The syngas compressor body 1 is equipped with a primary intake buffer component 5 and a primary exhaust buffer component 6 at one end, and a secondary intake buffer component 7 and a secondary exhaust buffer component 8 at the other end. A secondary cooler component 12 is also connected to the end of the syngas compressor body 1 closest to the secondary intake buffer component 7 and the secondary exhaust buffer component 8. The syngas compressor body 1 is connected to the sewage collection tank 16 through a pipeline assembly, and the syngas compressor body 1 is also electrically connected to the PLC control cabinet.

[0030] When in use, the coke oven gas compressor also includes at least a filter, lubricating oil pipelines for moving parts, cooling water pipelines, process gas pipelines, low-pressure electrical control cabinet, explosion-proof junction box, high-pressure soft starter cabinet, and other equipment and auxiliary parts (other equipment and auxiliary parts are the equipment and auxiliary parts required for the process operation of existing syngas compressors).

[0031] The PLC system in the PLC control cabinet can control the coke oven gas compressor and upload operating and control parameters to the DCS system through the communication module. The system uses the MODBUS communication protocol for communication, and the communication interface type is RS485. The coke oven gas compressor control system can accept emergency stop signals and start-up permission signals provided by the DCS through hard-wired connection to the DCS / SIS system. The coke oven gas compressor control system can also send the coke oven gas compressor operating signals to the central control room control system (DCS / SIS) through hard-wired connection.

[0032] The present invention also includes a thin oil station assembly 15 on the side of the syngas compressor body 1 near the main motor 2, and the thin oil station assembly 15 is provided with an independent oil tank.

[0033] This utility model also includes a first liquid level gauge 14 installed at the top of the liquid collection and venting tank 4.

[0034] The present invention further includes that the first-stage cooler component 11 is located between the synthesis gas compressor body 1 and the first-stage pre-separator 13. The first-stage cooler component 11 has a first air inlet 1101 and a first air outlet 1102 at its top and bottom ends, respectively. The first-stage cooler component 11 has a first water outlet 1104 at its top end away from the first air inlet 1101, and a first water inlet 1103 at its bottom end away from the first water outlet 1104.

[0035] The present invention also includes a mounting base 17 at the bottom of the sewage collection tank 16, a drain port 1604 at the lower part of one side of the sewage collection tank 16, a second vent 1602 at the top of the sewage collection tank 16, and a second remote level gauge and an automatic drain valve at the top of the sewage collection tank 16.

[0036] During use, the automatic drain valve installed at the top of the sewage collection tank 16 is automatically adjusted by the liquid level interlock. The automatic drain valve is equipped with a three-valve group, and the second remote liquid level gauge has a signal interface. The remote electrical signal is sent to the DCS, and the DCS will trigger a high alarm and remotely control the automatic drain valve to drain the liquid.

[0037] The present invention also includes a second air inlet 1601 on the upper part of one side of the sewage collection tank 16, and a spare interface 1603 at the same height as the second air inlet 1601 on the side of the sewage collection tank 16 near the second air inlet 1601.

[0038] In use, the coke oven gas compressor is centrally located within the factory building in a double-layer arrangement. The syngas compressor body 1 and the main motor 2 are installed on the second-floor platform, while the thin oil station assembly 15, the primary cooler component 11, the secondary cooler component 12, the primary separator component 9, the secondary separator component 10, and the primary pre-separator 13 are all installed on the ground. The primary cooler component 11 and the secondary cooler component 12 are both water coolers with a shell-and-tube structure. One side of the syngas compressor body 1 is connected to the main motor 2 via a crankshaft and connecting rod, and the main motor 2 has a main junction box 3 installed on one side. The syngas compressor body 1 is connected to the wastewater collection tank 16 via a pipeline assembly. The syngas compressor body 1 is also electrically connected to the PLC control cabinet. The coke oven gas compressor is arranged reasonably, neatly, and aesthetically pleasing, with sufficient maintenance space. Furthermore, the arrangement of the coke oven gas compressor complies with relevant specifications and design regulations, and has the advantage of high safety.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coke oven gas compressor, characterized in that, The system includes a syngas compressor body (1), a main motor (2), a liquid collection and venting tank (4), a primary separator component (9), a secondary separator component (10), a primary cooler component (11), a secondary cooler component (12), a primary pre-separator (13), a thin oil station component (15), and a wastewater collection tank (16). The syngas compressor body (1) is connected to the main motor (2) on one side via a crankshaft and connecting rod. A main junction box (3) is installed on one side of the main motor (2). The syngas compressor body (1) is provided with a primary separator component (9), a secondary separator component (10), a primary cooler component (11), a primary pre-separator (13), and a liquid collection and venting tank (4) on the side away from the main motor (2). One end of the syngas compressor body (1) is equipped with a primary intake buffer component (5) and a primary exhaust buffer component (6), and the other end of the syngas compressor body (1) is equipped with a secondary intake buffer component (7) and a secondary exhaust buffer component (8). The end of the syngas compressor body (1) near the secondary intake buffer component (7) and the secondary exhaust buffer component (8) is also connected to a secondary cooler component (12). The syngas compressor body (1) is connected to the sewage collection tank (16) through a pipeline assembly, and the syngas compressor body (1) is also electrically connected to the PLC control cabinet.

2. The coke oven gas compressor according to claim 1, characterized in that, The synthesis gas compressor body (1) is also provided with a thin oil station component (15) on the side near the main motor (2), and the thin oil station component (15) is provided with an independent oil tank.

3. The coke oven gas compressor according to claim 1, characterized in that, The top of the liquid collection and venting tank (4) is equipped with a first liquid level gauge (14).

4. The coke oven gas compressor according to claim 1, characterized in that, The first-stage cooler component (11) is located between the syngas compressor body (1) and the first-stage pre-separator (13). The first-stage cooler component (11) has a first air inlet (1101) at its top end and a first air outlet (1102) at its bottom end. The first-stage cooler component (11) has a first water outlet (1104) at its top end away from the first air inlet (1101) and a first water inlet (1103) at its bottom end away from the first water outlet (1104).

5. The coke oven gas compressor according to claim 1, characterized in that, The sewage collection tank (16) is provided with a mounting base (17) at the bottom, a drain port (1604) is provided on the lower side of the sewage collection tank (16), a second vent (1602) is provided at the top of the sewage collection tank (16), and a second remote level gauge and an automatic drain valve are also provided at the top of the sewage collection tank (16).

6. The coke oven gas compressor according to claim 1, characterized in that, The sewage collection tank (16) is provided with a second air inlet (1601) on the upper part of one side, and the sewage collection tank (16) is also provided with a spare interface (1603) at the same height as the second air inlet (1601) on the side near the second air inlet (1601).

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