Integral skid-mounted purification system

Abstract

The utility model relates to the technical field of nitrogen making equipment, and discloses an integral skid-mounted purification system which comprises a bearing outer frame, a pre-cooling unit is fixedly connected in the bearing outer frame, the left end of the pre-cooling unit is communicated with a three-stage filter, an adsorber is fixedly connected in the bearing outer frame, and the adsorber is communicated with the left end of the pre-cooling unit. The front face of the adsorber is fixedly connected with a switching valve, and the interior of the bearing outer frame is fixedly connected with a regeneration gas electric heater. Compared with a traditional skid-mounted purification system, the whole skid-mounted purification system has the advantages that the problem that an orifice plate flowmeter is mounted on an engineering pipeline is solved, the arrangement requirement of the equipment on the engineering pipeline is reduced, and the whole skid-mounted purification system integrates the pre-cooling unit and the three-stage filter, so that the purification efficiency is improved. And the equipment butt joint problem caused by the difference of pipeline standards of export projects is relieved, and the engineering material and equipment transportation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen making equipment technical field especially relates to a whole pry installation type purification system. BACKGROUND

[0002] The purification system is an important component link of air separation technology, and the related technology has been developing vigorously for many years in China. At present, the purification system usually adopts separate pry installation, and is connected with other modules after the project site. But it is easy to be affected by the equipment and pipeline arrangement of the project site and the construction level of the construction unit on site, and the final installation effect may not be satisfactory. Especially considering the difference of standards in export projects, once the engineering materials are not prepared, it will greatly affect the normal delivery of the whole project.

[0003] In view of the influence of the above factors on the purification system, we have invented a whole pry installation type purification system. In addition to the traditional purification system pipeline, switching valve, adsorber and other equipment, the pre-cooler and three-stage filter suitable for the project are pryed together, so that the whole equipment can avoid the influence of the on-site equipment and pipeline arrangement to the greatest extent, save the on-site construction workload, and improve the space utilization. SUMMARY

[0004] To solve the above technical problems, the utility model provides a whole pry installation type purification system.

[0005] The utility model adopts the following technical scheme: a whole pry installation type purification system, including bearing outer frame, the inside fixed connection of bearing outer frame has pre-cooled unit, the left end intercommunication of pre-cooled unit has three-stage filter, the inside fixed connection of bearing outer frame has adsorber, the front surface fixed connection of adsorber has switching valve, the inside fixed connection of bearing outer frame has regenerative gas electric heater, the inside fixed connection of bearing outer frame has cold box heating gas electric heater, the left end fixed connection of three-stage filter has orifice plate flowmeter, the inside fixed connection of bearing outer frame has power cabinet.

[0006] Through the above technical scheme, the adsorber front surface fixed connection switching valve, switching valve is convenient for switching between the different working conditions of adsorber, and in different processes such as adsorption and regeneration, the flow direction of gas can be controlled flexibly through switching valve, and the adsorber is also convenient for maintenance and troubleshooting.

[0007] As a further improvement of the above scheme, the right end of the regenerative gas electric heater is provided with a cold box heating gas electric heater, and the right end of the cold box heating gas electric heater is provided with a three-stage filter.

[0008] As a further improvement of the above scheme, the power cabinet is located at the left end of the adsorber, and the orifice flow meter is located at the top of the bearing outer frame.

[0009] As a further improvement of the above scheme, the left end of the three-stage filter is provided with a cold box heating gas electric heater, and the regeneration gas electric heater is located at the right end of the adsorber.

[0010] Through the above technical scheme, the regeneration gas electric heater can provide appropriate temperature for the regeneration gas, and the cold box heating gas electric heater is heated.

[0011] As a further improvement of the above scheme, the adsorber is located at the bottom of the orifice flow meter.

[0012] As a further improvement of the above scheme, the orifice flow meter is located at the top of the three-stage filter. Compared with the prior art, the beneficial effects of the present application are that:

[0013] The overall skid-mounted purification system avoids the problem of installing the orifice flow meter on the engineering pipeline, reduces the arrangement requirements of the equipment on the engineering pipeline, integrates the pre-cooling unit and the three-stage filter, relieves the equipment docking problem caused by the difference in pipeline standards of the export project, and reduces the engineering material and equipment transportation cost.

[0014] Compared with the traditional skid-mounted purification system, the overall skid-mounted purification system further skids the power cabinet and the power adjusting cabinet on the system, has the advantage of operation space aggregation, facilitates workers to simultaneously operate multiple systems, reasonably utilizes the space in the limited bearing outer frame internal space, reduces the land occupation area of the entire system, and the compact layout also helps to reduce the pipeline length in the gas transmission process, reduce the energy loss and pressure loss in the gas transmission process, and improve the overall energy efficiency of the system.

[0015] The cold box heating gas electric heater is arranged at the right end of the regeneration gas electric heater, and the three-stage filter is arranged at the right end of the cold box heating gas electric heater. This layout enables the gas to orderly enter the subsequent equipment after different heating treatment, the regeneration gas electric heater can provide appropriate temperature for the regeneration gas, and the cold box heating gas electric heater is heated, which helps to improve the accuracy and effectiveness of the entire system for gas treatment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall structure schematic view of the present application;

[0017] Figure 2 It is a right view structure schematic view of the present application;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;

[0019] Figure 4 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 5 It is a rear view structural diagram of the utility model.

[0021] Description of main symbols:

[0022] 1. Pre-cooling unit; 2. Three-stage filter; 3. Adsorber; 4. Switching valve; 5. Regeneration gas electric heater; 6. Cold box heating gas electric heater; 7. Orifice flowmeter; 8. Power control cabinet; 9. Power cabinet; 10. Load-bearing outer frame. DETAILED DESCRIPTION

[0023] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Example:

[0025] Please combine Figures 1-5 , an overall skid-mounted purification system of this embodiment includes a load-bearing outer frame 10, a pre-cooling unit 1 is fixedly connected to the interior of the load-bearing outer frame 10, the left end of the pre-cooling unit 1 is connected to the three-stage filter 2, the interior of the load-bearing outer frame 10 is fixedly connected to an adsorber 3, the front of the adsorber 3 is fixedly connected to a switching valve 4, the interior of the load-bearing outer frame 10 is fixedly connected to a regeneration gas electric heater 5, the interior of the load-bearing outer frame 10 is fixedly connected to a cold box heating gas electric heater 6, the left end of the three-stage filter 2 is fixedly connected to an orifice flowmeter 7, and the interior of the load-bearing outer frame 10 is fixedly connected to a power cabinet 9. By setting the overall equipment, compared with the traditional skid-mounted purification system, the overall skid-mounted purification system avoids the problem of installing the orifice flowmeter 7 on the engineering pipeline, reduces the equipment's requirements for the layout of the engineering pipeline, and integrates the pre-cooling unit 1 and the three-stage filter 2, alleviates the equipment docking problem caused by differences in pipeline standards in export projects, and reduces the transportation cost of engineering materials and equipment.

[0026] The front of the adsorber 3 is fixedly connected to a switching valve 4, which facilitates switching between different working states of the adsorber 3. In different processes such as adsorption and regeneration, the flow direction of the gas can be flexibly controlled by switching valve 4, which also facilitates maintenance and troubleshooting of the adsorber 3.

[0027] A cold box heating gas electric heater 6 is provided at the right end of the regeneration gas electric heater 5 , and a three-stage filter 2 is provided at the right end of the cold box heating gas electric heater 6 .

[0028] The power cabinet 8 is located at the left end of the adsorber 3, and the orifice flowmeter 7 is located at the top of the bearing outer frame 10. By arranging the overall equipment, compared with the traditional skid-mounted purification system, the overall skid-mounted purification system also skids the power cabinet 9 and the power cabinet 8 on the system, has the advantage of space aggregation, facilitates workers to realize the simultaneous operation of multiple systems, reasonably utilizes the space in the limited bearing outer frame 10 internal space, reduces the floor area of the whole system, and such compact layout also helps to reduce the pipe length in the gas transmission process, reduce the energy loss and pressure loss in the gas transmission process, and improve the overall energy efficiency of the system.

[0029] The left end of the three-stage filter 2 is provided with a cold box heating gas electric heater 6, and the regeneration gas electric heater 5 is located at the right end of the adsorber 3.

[0030] The regeneration gas electric heater 5 can provide suitable temperature for the regeneration gas, and the cold box heating gas electric heater 6 is heated.

[0031] The adsorber 3 is located at the bottom of the orifice flowmeter 7.

[0032] The implementation principle of the overall skid-mounted purification system in the embodiment of the application is as follows: after the raw air is compressed by an air compressor, the raw air enters a pre-cooling unit 1 after being stabilized by an air buffer tank, the pre-cooling unit 1 cools the compressed air whose temperature is raised to about ℃, and when the compressed air exits the pre-cooling unit, the temperature is reduced to about ℃. In this process, the free water in the compressed air is preliminarily separated, and then enters a three-stage filter 2 to further remove solid particles, oil and H2O in the air, and then enters an adsorber 3 to remove H2O, CO, CH and other hydrocarbons in the air. The purified air is sent to a fractionation system through an engineering pipeline, and at the same time, the expanded air and the contaminated nitrogen gas discharged from the fractionation system are returned to the purification system through an engineering pipeline; the expanded air is diffused through a venting pipe, and the contaminated nitrogen gas enters a regeneration gas electric heater 5 as regeneration gas, is heated after heating, and then regenerates the adsorber 3 in the regeneration working condition to remove H2O, CO, CH and other hydrocarbons adsorbed in the adsorber 3, and finally is diffused through a venting pipeline.

[0033] The overall skid-mounted purification system also has a cold box heating gas electric heater 6 built-in. When the equipment in the fractionation system is prepared before starting or is overhauled, the cold box heating gas electric heater 6 in the system can directly heat the pure air after the adsorption process, and then send it to the fractionation system as a pre-starting equipment purge gas or a heating gas when the equipment is overhauled.

[0034] In addition, the whole pry-mounted purification system integrates the power cabinet 8 and the power cabinet 9 with the traditional purification system, which facilitates power supply of the pre-cooling unit, the regeneration gas electric heater 5 and the cold box heating gas electric heater 6, and in the process of switching the working condition of the adsorber 3, the operator can more quickly adjust the working state of the regeneration gas electric heater 5 according to the parameters shown on the cabinet body. The design makes the whole operation area of the equipment more concentrated. In the later system maintenance process, the maintenance personnel can complete the centralized maintenance of the pre-cooling unit 1, the three-stage filter 2, the adsorber 3, the regeneration gas electric heater 5, the cold box electric heater, the power cabinet 8 and the power cabinet 9 in the operation area, which improves the work efficiency of the maintenance personnel, reduces the system maintenance cost, avoids the problem of installing the orifice flowmeter 7 on the engineering pipeline, reduces the arrangement requirements of the equipment on the engineering pipeline, relieves the equipment docking problem caused by the difference of pipeline standards of the export project, reduces the engineering material and equipment transportation cost, integrates the power cabinet 9 and the power cabinet 8, has the advantage of operation space aggregation, facilitates the workers to realize the simultaneous operation of multiple systems, reasonably utilizes the space in the limited bearing outer frame 10, reduces the land occupation area of the whole system, the compact layout also helps to reduce the pipeline length in the gas transmission process, reduces the energy loss and pressure loss in the gas transmission process, improves the overall energy efficiency of the system, the three-stage filter 2 is arranged at the right end of the cold box heating gas electric heater 6, which makes the gas orderly enter the subsequent equipment after different heating treatment, the regeneration gas electric heater 5 can provide appropriate temperature for the regeneration gas, and the cold box heating gas electric heater 6 is heated, which helps to improve the accuracy and effectiveness of the whole system in gas treatment.

[0035] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application belong to the scope of protection required by the present application.

Claims

1. An integral skid-mounted purification system, characterized in that: The invention comprises a load-bearing outer frame (10), wherein the interior of the load-bearing outer frame (10) is fixedly connected to a pre-cooling unit (1), the left end of the pre-cooling unit (1) is connected to a three-stage filter (2), the interior of the load-bearing outer frame (10) is fixedly connected to an adsorber (3), the front of the adsorber (3) is fixedly connected to a switching valve (4), the interior of the load-bearing outer frame (10) is fixedly connected to a regeneration gas electric heater (5), the interior of the load-bearing outer frame (10) is fixedly connected to a cold box heating gas electric heater (6), the left end of the three-stage filter (2) is fixedly connected to an orifice flowmeter (7), and the interior of the load-bearing outer frame (10) is fixedly connected to a power cabinet (9).

2. The integrated skid-mounted purification system according to claim 1, characterized in that: A cold box heating gas electric heater (6) is provided at the right end of the regeneration gas electric heater (5), and a three-stage filter (2) is provided at the right end of the cold box heating gas electric heater (6).

3. The integrated skid-mounted purification system according to claim 1, characterized in that: The power regulating cabinet (8) is located at the left end of the adsorber (3), and the orifice flowmeter (7) is located on the top of the load-bearing outer frame (10).

4. The integrated skid-mounted purification system according to claim 3, characterized in that: A cold box heating gas electric heater (6) is provided at the left end of the three-stage filter (2), and the regeneration gas electric heater (5) is located at the right end of the adsorber (3).

5. The integrated skid-mounted purification system according to claim 1, characterized in that: The adsorber (3) is located at the bottom of the orifice flowmeter (7).

6. The integrated skid-mounted purification system according to claim 5, characterized in that: The orifice flowmeter (7) is located on the top of the three-stage filter (2).

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