CN212142135U - Precise oil remover and nitrogen production equipment provided with same - Google Patents

Abstract

The utility model relates to an accurate degreaser and nitrogen making equipment provided with the same, wherein the accurate degreaser is provided with a tank body, the right side of the lower part of the tank body is provided with an air inlet, and a filtering area is arranged in the tank body corresponding to the position of the air inlet; the left side of the filtering area is connected with a catalytic purification area through a partition plate, and activated carbon is arranged above the catalytic purification area and the filtering area; an air outlet is arranged on the left side of the upper part of the tank body, and a filter screen is arranged in the tank body corresponding to the air outlet. The precise oil remover has the beneficial effects that the oil content index of the compressed air is less than or equal to 0.001PPm by multiple filtering means such as a filtering area, a catalytic purification area, active carbon, a filter screen and the like, and simultaneously impurities and moisture contained in the compressed air are removed. The utility model discloses a nitrogen making equipment realizes high-efficient separation gas oil, air water and impurity owing to adopt accurate degreaser, reduces follow-up nitrogen making carbon molecular sieve's load, prolongs nitrogen making carbon molecular sieve's life, need not frequently to change nitrogen making carbon molecular sieve, reaches reduction in production cost's effect.

Description

Precise oil remover and nitrogen production equipment provided with same

Technical Field

The utility model relates to a compressed air deoiling technical field especially relates to an accurate degreaser and install nitrogen making equipment of this accurate degreaser.

Background

The existing nitrogen making process is to make compressed air by a compressor, then to make nitrogen and oxygen separated by using the selective adsorption of nitrogen and oxygen by nitrogen making carbon molecular sieve. However, most of the existing compressors must use lubricating oil when working, so that the compressed air inevitably contains oil impurities, the main components of the oil impurities are hydrocarbon compounds, and the substances influence the use of the compressed air in the subsequent nitrogen making process. Therefore, the air water, the gas oil and the impurities in the compressed air need to be separated and removed, and the conventional compressed air oil remover mainly comprises two devices, namely a cyclone filter, a baffle plate and a wire mesh combined device.

For the cyclone filter, compressed air comes out of the oil removal filter element and enters the separator through the upper pipeline along the pipeline direction, centrifugal separation of air, water and gas and oil is realized by utilizing centrifugal force generated by high-speed rotational flow, but fog beads with smaller mass in air flow cannot be separated, so that the load of the later-stage nitrogen-making carbon molecular sieve is increased, and the service life of the nitrogen-making carbon molecular sieve is shortened.

For the baffle plate and wire mesh combination type, compressed air enters the filter along the air inlet pipe, is collided by the baffle plate arranged in the direction of the inner wall of the shell, water drops and oil drops mixed in the air are adhered to the surface of the baffle plate and are accumulated at the edge of the baffle plate to form liquid drops with larger particle size and fall to the bottom of the separator, then the air flow rises and passes through a filter screen formed by overlapping a plurality of layers of stainless steel wire meshes, tiny fog drops are condensed and grown to obtain further separation, although the separation effect is improved, the air flow resistance is large, and the height of the device is high; the oil removal filter element is generally installed by adopting a threaded connection structure, and after the oil removal filter element is used for a long time, the threaded connection part is rusted due to oxidation, so that the filter element is inconvenient to maintain and replace, and even the oil removal filter element cannot be installed due to thread sliding tooth damage. And part of oil enters the adsorption tower of the nitrogen making machine along with air to cause the pollution of the nitrogen making carbon molecular sieve, thereby reducing the service life of the nitrogen making machine molecular sieve, reducing the purity of nitrogen and consuming funds.

Therefore, it is highly desirable to provide a precision oil remover capable of efficiently removing oil and a nitrogen making apparatus equipped with the precision oil remover.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of above-mentioned shortcoming, the deficiency of prior art, the utility model provides a nitrogen making equipment of accurate degreaser and installing this accurate degreaser, its air water of having solved in the compressed air, the separation of gas-oil is not thorough, makes subsequent nitrogen making carbon molecular sieve's load too big, leads to nitrogen making carbon molecular sieve life to subtract technical problem by half.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

in a first aspect, an embodiment of the present invention provides an accurate oil remover, which is provided with a tank body, an air inlet is arranged on the right side of the lower part of the tank body, and a filtering area is arranged in the tank body at a position corresponding to the air inlet; the left side of the filtering area is connected with a catalytic purification area through a partition plate, the bottom of the catalytic purification area is provided with a baffle plate, and the surfaces of the partition plate and the baffle plate are respectively provided with a plurality of small holes; active carbon for adsorbing impurities in the compressed air is arranged above the catalytic purification area and the filtering area; an air outlet is arranged on the left side of the upper part of the tank body, and a filter screen is arranged in the tank body corresponding to the air outlet. The mesh number of the filter screen is 30 meshes, the aperture of the mesh is 550 mu m, and the filter screen is used for screening and removing impurities contained in the compressed air.

The embodiment of the utility model provides an accurate degreaser owing to adopt multiple filtration technological means such as filtering area, catalytic purification district, active carbon and filter screen, can realize high-efficient separation gas oil, air water and impurity, makes compressed air oiliness index be less than or equal to 0.001PPm, has also got rid of the impurity and the moisture that contain in the compressed air simultaneously.

Optionally, a lead screw made of stainless steel material is installed in the filtering area, a fourth filter with a filtering precision of 0.1 μm is sleeved on the lead screw, and the bottom of the fourth filter is fixed by a nut. The lead screw is made by stainless steel material, and the fourth filter cover is established at the lead screw, and the bottom is fixed by the nut, has solved threaded connection part and has rusted because of the oxidation, causes the inconvenient technical problem of filter core maintenance change.

Optionally, the catalytic purification area is filled with a plurality of ceramic balls, and a catalyst is filled between the ceramic balls and is used for catalyzing the reaction and decomposition of oil and oxygen in the compressed air. The ceramic ball is used as the covering and supporting material and tower stuffing for catalyst inside the reactor, and has the features of high temperature and high pressure resistance, low water absorption and stable chemical performance, and can resist corrosion of acid, alkali and other organic solvent and temperature change during production.

Optionally, a charging hole is formed in the top of the tank body, and a discharging hole is formed in the left side of the middle of the tank body. The activated carbon is filled into the tank body from the charging port, adsorbs oil stains and impurities in the compressed air, and is taken out from the discharging port after the activated carbon fails.

Optionally, the bottom of the tank body is detachable and is connected with the main body of the tank body through a flange; and the bottom of the tank body is provided with a sewage draining outlet corresponding to the positions of the filtering area and the catalytic purification area respectively.

In a second aspect, an embodiment of the present invention provides a nitrogen making apparatus, including an air compressor, a first filter, a refrigeration dryer, a second filter, a third filter, an air buffer tank, a plurality of nitrogen making machine adsorption towers, and a nitrogen buffer tank; a precise oil remover is also arranged between the third filter and the air buffer tank;

the air compressor, the first filter, the cold dryer, the second filter, the third filter, the precision oil remover, the air buffer tank, the nitrogen making machine adsorption tower and the nitrogen buffer tank are sequentially communicated in series through pipelines.

Optionally, the first filter has a filtration precision of 1 μm; the filtration precision of the second filter is 0.3 mu m; the filtration accuracy of the third filter was 0.2 μm. The compressed air passes through the first filter, the second filter and the third filter with higher and higher filtering precision, and partial oil, moisture and impurities in the compressed air are separated and removed.

Optionally, the number of the nitrogen generator adsorption towers is two, one of the nitrogen generator adsorption towers is communicated with the other nitrogen generator adsorption tower in parallel through a pipeline with a valve, and the two nitrogen generator adsorption towers are adjusted to alternately adsorb and desorb by controlling the opening and closing of the valve, so that nitrogen and oxygen in the compressed air are separated.

Optionally, control valves are installed between each component of the nitrogen production equipment.

(III) advantageous effects

The utility model has the advantages that: the utility model discloses a nitrogen making equipment, owing to adopt accurate degreaser, for prior art, it can realize high-efficient accurate deoiling, makes compressed air oiliness index be less than or equal to 0.001PPm, has reduced subsequent nitrogen making carbon molecular sieve's load, and the life of extension nitrogen making carbon molecular sieve need not frequently to change nitrogen carbon molecular sieve, has reached the technological effect that reduces nitrogen gas manufacturing cost.

Drawings

FIG. 1 is a schematic view showing the connection of the components of the nitrogen plant of the present invention;

fig. 2 is a schematic view of the internal structure of the precision oil remover 6 in fig. 1.

[ description of reference ]

1: an air compressor; 2: a first filter; 3: a cold dryer; 4: a second filter; 5: a third filter; 6: a precise oil remover; 7: an air buffer tank; 8: an adsorption tower of a nitrogen making machine; 9: a nitrogen buffer tank; 10: an air inlet; 11: a fourth filter; 12: ceramic balls; 13: activated carbon; 14: a filter screen; 15: an air outlet; 16: a charging port; 17: a discharge port; 18: a sewage draining outlet; 19: a tank body; 20: a baffle plate; 21: a partition plate.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. In which the terms "upper", "lower", etc. are used herein with reference to the orientation of fig. 2.

The precise oil eliminator 6 provided by the embodiment of the utility model is provided with a tank body 19, an air inlet 10 is arranged at the right side of the lower part of the tank body 19, and a filtering area is arranged in the tank body 19 corresponding to the position of the air inlet 10; the left side of the filtering area is connected with a catalytic purification area through a partition plate 21, the bottom of the catalytic purification area is provided with a baffle plate 20, and the surfaces of the partition plate 21 and the baffle plate 20 are respectively provided with a plurality of small holes; the activated carbon 13 for adsorbing impurities in the compressed air is arranged above the catalytic purification area and the filtering area; an air outlet 15 is arranged on the left side of the upper part of the tank body 19, and a filter screen 14 is arranged in the tank body 19 corresponding to the air outlet 15. The utility model discloses an accurate degreaser 6 passes through multiple filtration means such as filtering area, catalytic purification district, active carbon and filter screen 14, makes compressed air oiliness index be less than or equal to 0.001PPm, has also got rid of the impurity and the moisture that contain in the compressed air simultaneously. The utility model discloses a nitrogen making equipment, owing to adopt accurate degreaser 6 realizes high-efficient separation gas oil, air water and impurity, has reduced subsequent nitrogen making carbon molecular sieve's load, prolongs nitrogen making carbon molecular sieve's life, reaches reduction in production cost's effect, has overcome the unable effective separation of current compressed air degreaser and has got rid of oil gas in the compressed air, leads to frequent renew cartridge, consumes the technical problem of fund.

In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Detailed description of the preferred embodiments

Referring to fig. 1 and 2, the utility model discloses a nitrogen making equipment includes air compressor machine 1, first filter 2, cold dry machine 3, second filter 4, third filter 5, precision deoiling device 6, air buffer tank 7, at least one nitrogen making machine adsorption tower 8 and nitrogen buffer tank 9.

The electric drive air compressor 1 sucks air to do work and generates compressed air; however, lubricating oil is required for the operation of the compressor, and oil impurities are inevitably contained in the compressed air.

The output end of the air compressor 1 is communicated with the input end of the first filter 2 through a pipeline, the filtering precision of the first filter 2 is 1 micrometer, and part of water, oil and impurities in the compressed air are filtered. A valve is further arranged between the output end of the air compressor 1 and the input end of the first filter 2 and used for controlling the pipeline to be opened or closed.

The output end of the first filter 2 is communicated with the input end of the cold dryer 3 through a pipeline, the cold dryer 3 is used for reducing the humidity of the compressed air and removing the moisture contained in the compressed air, and the oil content index of the compressed air after being purified by the cold dryer is less than or equal to 0.3 PPm. A valve is arranged between the output end of the first filter 2 and the input end of the cold dryer 3 and used for controlling the pipeline to be opened or closed.

The output end of the cold dryer 3 is communicated with the input end of the second filter 4 through a pipeline, the filtering precision of the second filter 4 is 0.3 mu m, and part of water, oil and impurities in the compressed air are filtered. A valve is arranged between the output end of the cold dryer 3 and the input end of the second filter 4 and is used for controlling the pipeline to be opened or closed.

The output end of the second filter 4 is communicated with the input end of the third filter 5 through a pipeline, the filtering precision of the third filter 5 is 0.2 mu m, and part of water, oil and impurities in the compressed air are filtered. And a valve is arranged between the output end of the second filter 4 and the input end of the third filter 5 and is used for controlling the pipeline to be opened or closed. The compressed air passes through the first filter 2, the second filter 4 and the third filter 5 with higher and higher filtering precision, and partial oil stains, moisture and impurities in the compressed air are separated and removed. The first filter 2, the second filter 4 and the third filter 5 are all provided with a drain valve, and part of oil stain, moisture and impurities are discharged out of the filters from the drain valve.

The output end of the third filter 5 is communicated with an air inlet 10 of the precision oil removing device 6 through a pipeline. And a valve is arranged between the output end of the third filter 5 and the air inlet 10 of the precision oil removing device 6 and is used for controlling the pipeline to be opened or closed. The air inlet 10 is arranged on the right side of the lower portion of the tank body 19, a filtering area is arranged in the tank body 19 corresponding to the position of the air inlet 10, a 361L lead screw made of stainless steel is installed in the filtering area, a fourth filter 11 is sleeved on the lead screw, and the bottom of the lead screw is fixed by a nut, so that the technical problem that the filter element is inconvenient to maintain and replace due to the fact that the existing threaded connection portion rusts due to oxidation is solved. The bottom of the tank body 19 is detachable and is connected with the main body of the tank body 19 through a flange, and the bottom of the tank body 19 can be detached to replace the catalyst and the filter in the tank body 19.

The filtering precision of the fourth filter 11 is 0.1 μm, the left side of the filtering area is connected with a catalytic purification area through a partition plate 21, a plurality of small holes are distributed on the surface of the partition plate 21, and compressed air enters the catalytic purification area from the small holes on the surface of the partition plate 21 after being filtered by the fourth filter 11. The oil stain, water and impurities filtered by the fourth filter 11 fall to the bottom of the tank 19 and are discharged from a sewage outlet 18 at the bottom.

The catalytic purification area is filled with a plurality of ceramic balls 12, and a catalyst for catalyzing the reaction and decomposition of oil and oxygen in the compressed air is filled between the ceramic balls 12. The ceramic ball 12 is used as the covering and supporting material and tower filler for catalyst in reactor, and has the features of high temperature and high pressure resistance, low water absorption and stable chemical performance, and can resist the corrosion of acid, alkali and other organic solvent and the temperature change during production. The bottom of catalytic purification district is provided with baffle 20, and the baffle 20 face is distributed and is had a plurality of aperture, and moisture, impurity in the compressed air can enter into the bottom of jar body 19 from the aperture on baffle 20, and the drain 18 from the bottom discharges.

Above the catalytic purification zone and the filtration zone, activated carbon 13 for adsorbing impurities in the compressed air is provided, the activated carbon 13 being a specially treated carbon, and the organic raw material (husk, coal, wood, etc.) is heated in the absence of air to reduce non-carbon components (this process is called carbonization), and then reacts with gas to erode the surface and produce a structure with developed micropores (this process is called activation). Since the activation process is a microscopic process, i.e., the surface erosion of a large amount of molecular carbides is a point-like erosion, the surface of the activated carbon is caused to have countless fine pores. The diameter of the micropores on the surface of the activated carbon is mostly between 2 and 50nm, even a small amount of activated carbon has huge surface area, and the surface area of each gram of activated carbon is 500 to 1500m²Almost all applications of activated carbon are based on this feature of activated carbon.

An air outlet 15 is arranged at the left side position of the upper part of the tank body 19, and a filter screen 14 is arranged in the tank body 19 corresponding to the air outlet 15. The mesh number of the filter screen is 30 meshes, the aperture of the mesh is 550 mu m, and the filter screen is used for screening and removing impurities contained in compressed air and preventing the impurities from entering an adsorption tower of a nitrogen making machine along with the compressed air to cause pollution of a nitrogen making carbon molecular sieve, so that the service life of the nitrogen making machine molecular sieve is shortened, the purity of nitrogen is reduced, and capital is consumed.

The air outlet 15 of the precise oil removing device 6 is communicated with the input end of the air buffer tank 7 through a pipeline, the air buffer tank 7 is mainly used for buffering the air pressure fluctuation of the nitrogen making equipment, so that the nitrogen making equipment works more stably, and the buffering performance of the air buffer tank 7 is mainly realized by compressed air in a compression tank, preferably a diaphragm type buffer tank. And a valve is also arranged between the air outlet of the precise oil removing device 6 and the input end of the air buffer tank 7 and is used for controlling the pipeline to be opened or closed.

The output end of the air buffer tank 7 is communicated with the input ends of the plurality of nitrogen generator adsorption towers 8 through pipelines, and the plurality of nitrogen generator adsorption towers 8 are communicated in parallel; a nitrogen making carbon molecular sieve is arranged in the nitrogen making machine adsorption tower 8 and is used for separating most of nitrogen from a small part of oxygen; and valves are also arranged between the output end of the air buffer tank 7 and the input ends of the plurality of nitrogen generator adsorption towers 8 and are used for controlling the pipelines to be opened or closed.

In order to better separate most of nitrogen and a small part of oxygen in the air by the nitrogen generator adsorption towers 8, the number of the nitrogen generator adsorption towers 8 is more than two, three, four or more, and the plurality of nitrogen generator adsorption towers 8 are communicated in parallel through pipelines. Preferably, the number of the nitrogen adsorber columns 8 is two. The purified air respectively enters two nitrogen generator adsorption towers 8 through two paths, alternate adsorption and desorption are carried out through automatic switching of a pneumatic valve on the nitrogen generator adsorption towers 8, most of nitrogen and a small part of oxygen in the air are separated in the process, and the oxygen-enriched air is emptied. The nitrogen is enriched at the top of the adsorption tower 8 of the nitrogen making machine and is conveyed to a back-stage nitrogen buffer tank 9 by a pipeline, and then is conveyed to a nitrogen storage tank by the nitrogen buffer tank 9 through a pipeline.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (9)

1. A precision oil remover is characterized in that: the precise oil eliminator (6) is provided with a tank body (19), an air inlet (10) is arranged on the right side of the lower part of the tank body (19), and a filtering area is arranged in the tank body (19) corresponding to the air inlet (10); the left side of the filtering area is connected with a catalytic purification area through a partition plate (21), the bottom of the catalytic purification area is provided with a baffle plate (20), and the surfaces of the partition plate (21) and the baffle plate (20) are respectively provided with a plurality of small holes; active carbon (13) for adsorbing impurities in the compressed air is arranged above the catalytic purification area and the filtering area; an air outlet (15) is arranged on the left side of the upper part of the tank body (19), and a filter screen (14) is arranged in the tank body (19) corresponding to the air outlet (15).

2. The precision oil eliminator of claim 1, wherein: a lead screw made of stainless steel material is arranged in the filtering area, a fourth filter (11) with the filtering precision of 0.1 mu m is sleeved on the lead screw, and the bottom of the fourth filter is fixed by a nut.

3. The precision oil eliminator of claim 1, wherein: the catalytic purification area is filled with a plurality of ceramic balls (12), and catalysts are filled among the ceramic balls (12) and used for catalyzing the reaction and decomposition of oil and oxygen in the compressed air.

4. The precision oil eliminator of claim 1, wherein: the top of the tank body is provided with a charging hole (16), and the left side of the middle part of the tank body is provided with a discharging hole (17).

5. The precision oil eliminator of claim 1, wherein: the bottom of the tank body (19) is detachable and is connected with the main body of the tank body (19) through a flange; and the bottom of the tank body (19) is provided with a sewage draining outlet (18) corresponding to the positions of the filtering area and the catalytic purification area respectively.

6. A nitrogen production device comprises an air compressor (1), a first filter (2), a refrigeration dryer (3), a second filter (4), a third filter (5), an air buffer tank (7), a plurality of nitrogen production machine adsorption towers (8) and a nitrogen buffer tank (9); the method is characterized in that: a precision oil remover (6) as claimed in any one of claims 1-5 is further arranged between the third filter (5) and the air buffer tank (7);

the air compressor (1), the first filter (2), the cold dryer (3), the second filter (4), the third filter (5), the precise oil remover (6), the air buffer tank (7), the nitrogen making machine adsorption tower (8) and the nitrogen buffer tank (9) are sequentially communicated in series through pipelines.

7. The nitrogen plant of claim 6, wherein: the filtering precision of the first filter (2) is 1 mu m; the filtration precision of the second filter (4) is 0.3 mu m; the filtering precision of the third filter (5) is 0.2 mu m.

8. The nitrogen plant of claim 6, wherein: the number of the nitrogen generator adsorption towers (8) is two, one nitrogen generator adsorption tower (8) is communicated with the other nitrogen generator adsorption tower (8) in parallel through a pipeline with a valve, the two nitrogen generator adsorption towers (8) are adjusted to perform alternate adsorption and desorption through controlling the opening and closing of the valve, and nitrogen and oxygen in the compressed air are separated.

9. The nitrogen plant of claim 6, wherein: and control valves are arranged among all parts of the nitrogen making equipment.

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