CN210825421U

CN210825421U - Novel pressure swing adsorption nitrogen making equipment

Info

Publication number: CN210825421U
Application number: CN201922071579.1U
Authority: CN
Inventors: 毕海涛; 孙大为; 王超学; 刘强; 王丽曼
Original assignee: Xinhua Pharmaceutical Shouguang Co ltd
Current assignee: Xinhua Pharmaceutical Shouguang Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-06-23
Anticipated expiration: 2029-11-27

Abstract

The utility model discloses a novel pressure swing adsorption nitrogen making device, which relates to the field of nitrogen making devices, and comprises a screw compressor, an oil-water separator, a freeze dryer, an air process tank, an adsorption tower, a nitrogen storage tank, a control pneumatic valve and an electrical control box, wherein the nitrogen consumption of a workshop is 1200 tons/year, the cost is calculated according to 1000 yuan/ton, 120 ten thousand yuan is spent, the transportation and purchase cost is greatly reduced after the pressure swing adsorption nitrogen making device is adopted, the air supply pressure of the pressure swing adsorption nitrogen making device is stable, the problems that the pipeline purging is not thorough when the nitrogen pressure is lower, the material transfer is slow, the pneumatic valve does not act and the like are avoided, two nitrogen making devices are automatically started, the energy consumption is saved while the gas stability of the workshop is ensured, the upper tower body and the lower tower body are set to be separable rotary structures, the carbon sub-plate in the adsorption tower is convenient to be replaced, and after, comparatively convenient when clearing up the adsorption tower inside, more enough realization is to the more efficient maintenance operation of adsorption tower.

Description

Novel pressure swing adsorption nitrogen making equipment

Technical Field

The utility model relates to a nitrogen making equipment field specifically is a novel pressure swing adsorption nitrogen making equipment.

Background

In the production process of the existing workshop, when operations such as purging pipelines, transferring materials, adjusting pneumatic valves and the like are carried out, a large amount of nitrogen is needed to be used, a liquid nitrogen storage tank is respectively arranged in a north area and a south area of the company, liquid nitrogen is purchased by a transport vehicle and filled into the liquid nitrogen storage tanks for use in each workshop, and due to the fact that the nitrogen is large in usage amount, purchasing and transporting costs are high, certain potential safety hazards exist in the loading and unloading process; and the air supply pressure of the storage tank is unstable, and the problems of incomplete pipeline purging, slow material transfer, no action of a pneumatic valve and the like can be caused when the nitrogen pressure is lower, so that the normal production of a workshop is influenced.

Disclosure of Invention

An object of the utility model is to provide a novel pressure swing adsorption nitrogen making equipment has solved current liquid nitrogen productivity ratio lower, the poor technical problem of ability of preparation.

The purpose of the utility model can be realized by the following technical scheme:

a novel pressure swing adsorption nitrogen making device comprises a screw compressor, an oil-water separator, a freeze dryer, a filter group, an air process tank, adsorption towers, a nitrogen storage tank, a control pneumatic valve and an electrical control box, wherein the screw compressor, the oil-water separator, the freeze dryer, the filter group and the air process tank are fixedly connected in series end to end through guide pipes, the control pneumatic valve is installed in the middle of a connecting pipeline between the screw compressor and the oil-water separator, the two adsorption towers are fixedly connected in parallel through air guide pipes, the exhaust end of the air process tank and the two adsorption towers are fixedly connected in series through the air guide pipes, and the nitrogen storage tank is fixedly connected in series through the air guide pipes and the two adsorption towers;

the adsorption tower comprises an upper tower body, a lower tower body, a supporting plate, a side vertical plate, a fixed plate, a rotating shaft, a movable plate, a screw rod and a lifting plate, the top side of the supporting plate is vertically provided with two side vertical plates correspondingly, the fixing plate is fixed at the outer sides of the tops of the side vertical plates through welding, the lifting plate is vertically arranged right above the side vertical plate, the movable plate is horizontally and fixedly connected with the side surface of the lifting plate, the bottom end of the screw rod penetrates through the inside of the movable plate in a threaded fit manner, the end part of the bottom end of the screw rod is arranged on the top side of the fixed plate in a fit manner through a bearing, the upper tower body and the lower tower body are arranged up and down correspondingly, the bottom end port of the upper tower body is connected with the top end port of the lower tower body in a matched manner through a flange, rotating shafts are respectively arranged on two sides of the circumferential surface of the upper tower body and two sides of the circumferential surface of the lower tower body, and the end parts of two ends of the four groups of rotating shafts are respectively arranged in a bearing seat of the side vertical plate and a bearing seat of the movable plate.

As a further aspect of the present invention: the filter group is fixed by three groups of filters connected in series end to end through gas guide tubes.

As a further aspect of the present invention: and a control pneumatic valve is arranged between the exhaust end of the air process tank and the connecting pipeline of the two groups of adsorption towers.

As a further aspect of the present invention: and a control pneumatic valve is arranged between the exhaust end of the nitrogen storage tank and the connecting pipelines of the two groups of adsorption towers.

As a further aspect of the present invention: the electric control box is respectively connected with the screw compressor, the oil-water separator, the freeze dryer, the filter group, the air process tank, the adsorption tower, the nitrogen storage tank and the control pneumatic valve through control signal wires.

The utility model has the advantages that: 1200 tons/year of nitrogen consumption in a workshop, calculated according to 1000 yuan/ton, cost 120 ten thousand yuan, greatly reduce transportation and purchase cost after adopting pressure swing adsorption nitrogen making equipment, adopt stable gas supply pressure of the pressure swing adsorption nitrogen making equipment, avoid the problems of incomplete pipeline purging, slow material transfer, no action of a pneumatic valve and the like when the nitrogen pressure is lower, adopt the mode that the paper nitrogen purity of the pressure swing adsorption nitrogen making equipment reaches more than 99 percent, and the safety is high, the system adopts a mode that two sets of equipment are connected in parallel, when the pressure of a nitrogen storage tank reaches 0.8MPa, the equipment automatically stops running, when the pressure of the storage tank is lower than 0.6MPa, one set of nitrogen making equipment is automatically started, when the pressure of the storage tank is lower than 0.5MPa, two sets of nitrogen making equipment are automatically started, the energy consumption is saved while the gas consumption in the workshop is ensured to be stable, and the upper tower body and the lower tower body are set to be a separable, and after the rotation, the inside of the adsorption tower is cleaned conveniently, and more efficient maintenance operation of the adsorption tower can be realized.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a diagram of the whole system of the present invention;

FIG. 2 is a perspective view of the adsorption tower of the present invention;

FIG. 3 is a front view of the adsorption tower of the present invention;

in the figure: 1. a screw compressor; 2. an oil-water separator; 3. a freeze dryer; 4. a filter group; 5. an air process tank; 6. an adsorption tower; 7. a nitrogen storage tank; 8. controlling a pneumatic valve; 9. an electrical control box; 61. an upper tower body; 62. a lower tower body; 63. a support plate; 64. a side vertical plate; 65. a fixing plate; 66. a rotating shaft; 67. a movable plate; 68. a screw rod; 69. a lifting plate.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-3, a novel pressure swing adsorption nitrogen making device comprises a screw compressor 1, an oil-water separator 2, a freeze dryer 3, a filter group 4, an air process tank 5, adsorption towers 6, a nitrogen storage tank 7, a control pneumatic valve 8 and an electrical control box 9, wherein the screw compressor 1, the oil-water separator 2, the freeze dryer 3, the filter group 4 and the air process tank 5 are fixedly connected in series end to end through a conduit, the control pneumatic valve 8 is installed in the middle of a connecting pipeline between the screw compressor 1 and the oil-water separator 2, the two groups of adsorption towers 6 are fixedly connected in parallel through an air duct, an exhaust end of the air process tank 5 is fixedly connected in series through an air duct with the two groups of adsorption towers 6, and the nitrogen storage tank 7 is fixedly connected in series through an air duct with the two groups of adsorption towers 6;

the adsorption tower 6 comprises an upper tower body 61, a lower tower body 62, a support plate 63 and a side vertical plate 64, the tower comprises a fixed plate 65, a rotating shaft 66, a movable plate 67, a screw rod 68 and a lifting plate 69, wherein two side vertical plates 64 are vertically installed on the top side of a supporting plate 63 correspondingly, the fixed plate 65 is fixed on the outer side of the top of each side vertical plate 64 through welding, the lifting plate 69 is vertically arranged right above each side vertical plate 64, the movable plate 67 is horizontally and fixedly connected to the side surface of the lifting plate 69, the bottom end of the screw rod 68 penetrates through the inside of the movable plate 67 through threaded fit, the bottom end of the screw rod 68 is installed on the top side of the fixed plate 65 through a bearing in a matched manner, the upper tower body 61 and the lower tower body 62 are vertically and correspondingly arranged, the bottom end of the upper tower body 61 is connected with the top end of the lower tower body 62 through a flange in a matched manner, the rotating shaft 66 is installed on two sides of the circumferential;

the filter group 4 is formed by connecting and fixing three groups of filters in series end to end through gas guide pipes, so that multi-group filtering treatment can be realized;

a control pneumatic valve 8 is arranged between the exhaust end of the air process tank 5 and the connecting pipelines of the two groups of adsorption towers 6, and can be matched to realize control operation;

a control pneumatic valve 8 is arranged between the exhaust end of the nitrogen storage tank 7 and the connecting pipelines of the two groups of adsorption towers 6, and can be matched to realize control operation;

the electric control box 9 is respectively connected with the screw compressor 1, the oil-water separator 2, the freeze dryer 3, the filter group 4, the air process tank 5, the adsorption tower 6, the nitrogen storage tank 7 and the control pneumatic valve 8 through control signal lines, and can realize electric control in all unified working areas.

The utility model discloses a theory of operation: air is compressed by a screw compressor 1 and then enters an oil-water separator 2, a freeze dryer 3 and a filter group 4 for dewatering, then enters an air process tank 5, the pretreated compressed air enters a pressure swing adsorption nitrogen making system formed by connecting two groups of adsorption towers 6 in parallel for making nitrogen, the adsorption towers 6 are internally provided with carbon molecular sieves, the two adsorption towers 6 alternately work for making nitrogen and regenerating and deoxidizing, the device can automatically and continuously make nitrogen, the work or regeneration of the adsorption towers 6 is automatically switched by controlling a pneumatic valve 8, the switching period is about 70 seconds, oxygen in the air in the adsorption towers 6 is adsorbed by the carbon molecular sieves under the pressurization state, the nitrogen directly enters a nitrogen storage tank 7 through the top of the tower, the oxygen adsorbed by the carbon molecular sieves in the regeneration towers is analyzed under normal pressure, when a carbon molecular plate in the adsorption towers 6 is replaced, screws on connecting flanges of an upper tower body 61 and a lower tower body 62 are released, rotatory lead screw 68, under the cooperation of screw thread, can realize going up the rising of tower body 61, go up tower body 61 and tower body 62 down respectively under the cooperation of rotation axis 66, realize the upset, be convenient for change the inside carbon molecular board of adsorption tower 6, in addition rotatory back, comparatively convenient when clearing up the inside of adsorption tower 6, more enough realize the maintenance operation to the adsorption tower 6 more efficient.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The novel pressure swing adsorption nitrogen making equipment is characterized by comprising a screw compressor (1), an oil-water separator (2), a freeze dryer (3), a filter group (4), an air process tank (5), adsorption towers (6), a nitrogen storage tank (7), a control pneumatic valve (8) and an electric control box (9), wherein the screw compressor (1), the oil-water separator (2), the freeze dryer (3), the filter group (4) and the air process tank (5) are fixedly connected in series through a guide pipe head and tail, the control pneumatic valve (8) is installed in the middle of a connecting pipeline between the screw compressor (1) and the oil-water separator (2), the two adsorption towers (6) are fixedly connected in parallel through air guide pipes, and the exhaust end of the air process tank (5) is fixedly connected in series with the two adsorption towers (6) through air guide pipes, the nitrogen storage tank (7) is fixedly connected with the two groups of adsorption towers (6) in series through air guide pipes;

the adsorption tower (6) comprises an upper tower body (61), a lower tower body (62), a support plate (63), side vertical plates (64), a fixed plate (65), a rotating shaft (66), a movable plate (67), a screw rod (68) and a lifting plate (69), wherein the top side of the support plate (63) is correspondingly vertically provided with the two side vertical plates (64), the fixed plate (65) is fixed at the outer side of the top of the side vertical plates (64) through welding, the lifting plate (69) is vertically arranged right above the side vertical plates (64), the movable plate (67) is horizontally and fixedly connected with the side surface of the lifting plate (69), the bottom end of the screw rod (68) penetrates through the inside of the movable plate (67) through thread fit, the bottom end part of the screw rod (68) is arranged at the top side of the fixed plate (65) through bearing fit, the upper tower body (61) and the lower tower body (62) are vertically and correspondingly arranged, the bottom end port of the upper tower body (61) is connected with the, two sides of the circumferential surface of the upper tower body (61) and two sides of the circumferential surface of the lower tower body (62) are respectively provided with a rotating shaft (66), and the end parts of the two ends of the four groups of rotating shafts (66) are respectively arranged in a bearing seat of the side vertical plate (64) and a bearing seat of the movable plate (67).

2. The new pressure swing adsorption nitrogen plant of claim 1, characterized in that the filter group (4) is fixed by three groups of filters connected in series end to end through gas conduits.

3. The new pressure swing adsorption nitrogen making equipment according to claim 1, characterized in that a control pneumatic valve (8) is installed between the exhaust end of the air process tank (5) and the connecting pipeline of the two groups of adsorption towers (6).

4. The equipment for producing nitrogen by pressure swing adsorption as claimed in claim 1, wherein a control pneumatic valve (8) is installed between the exhaust end of the nitrogen storage tank (7) and the connecting pipeline of the two groups of adsorption towers (6).

5. The novel pressure swing adsorption nitrogen making equipment according to claim 1, wherein the electrical control box (9) is respectively connected with the screw compressor (1), the oil-water separator (2), the freeze dryer (3), the filter group (4), the air process tank (5), the adsorption tower (6), the nitrogen storage tank (7) and the control pneumatic valve (8) through control signal lines.