CN217549238U - Solvent rich liquid integrated filtering and purifying device for natural gas purification and natural gas purification system - Google Patents

Abstract

The utility model relates to a natural gas purification technology field particularly, relates to an integrated filtration purification device of rich liquid of solvent and natural gas clean system for natural gas purification. The device comprises a filter and an adsorber; the bottom of the filter is provided with a filtering liquid inlet pipe and a filtering liquid outlet pipe which are positioned on the same horizontal plane, and the bottom of the adsorber is provided with an adsorbing liquid inlet pipe and an adsorbing liquid outlet pipe which are positioned on the same horizontal plane; wherein, the filtrate outlet pipe is communicated with the absorption liquid inlet pipe; at least one filtering filter element is fixedly arranged in the filter, the filtering precision of the filtering filter element is 1-5 mu m, and the pollutant carrying capacity is more than or equal to 650 g/(L/min); at least one adsorption filter element is fixedly arranged in the adsorber, the iodine adsorption value of the adsorption filter element is more than or equal to 1200mg/g, and the contact time is more than or equal to 20 seconds. The device has improved the purification efficiency of pollutants such as granule pollutant of granule footpath and heavy matter liquid hydrocarbon by a wide margin, has advantages such as filter core long service life, change fast, running cost low.

Description

Solvent rich liquid integrated filtering and purifying device for natural gas purification and natural gas purifying system

Technical Field

The utility model relates to a natural gas purification technology field particularly, relates to an integrated filtration purification device of rich liquid of solvent and natural gas clean system for natural gas purification.

Background

In the process of natural gas exploitation, a solvent is required to be adopted to carry out processes such as dehydration, desulfurization and the like on natural gas. The solvent comprises ethylene glycol, triethylene glycol and amine liquid.

In the purification process of natural gas dehydration, desulfurization and the like, the solvent barren solution enters the contact tower from the upper part, and becomes a solvent rich solution containing a plurality of pollutants after the solvent barren solution and the natural gas are in reverse contact reaction in the contact tower, and the solvent rich solution flows out from the lower part of the contact tower. And (3) conveying the solvent rich solution flowing out of the contact tower to a solvent regeneration treatment device for regeneration treatment, regenerating the solvent rich solution into qualified solvent poor solution, and conveying the solvent poor solution to the contact tower again for recycling, thereby realizing the recycling of the solvent.

The solvent rich solution generated by the natural gas purification treatment process not only contains a large amount of soluble pollutants, but also contains a large amount of insoluble pollutants (particle pollutants and hydrocarbon pollutants). The insoluble pollutants cause the problems of scaling, foaming, corrosion, blockage and the like, and have adverse effects on the purification treatment process of natural gas and the regeneration process of a solvent. Because the solvents are recycled, after the system runs for a long time, insoluble pollutants can generate an accumulation effect, the pollution degree of the system is continuously increased, and finally the problems of performance reduction of a purification system and a regeneration system, system failure and shutdown, running cost increase and the like are caused. Therefore, in the solvent regeneration treatment system, a filtration and purification device is required to be arranged to remove the insoluble pollutants timely and effectively.

In the prior art, the traditional purification device comprises a pre-filter, an adsorber and a post-filter, and the device has complex structure and high cost. In the prior art, a filter usually adopts a deep-layer filter element (a melt-blown type or a wire-wound type), the filtering precision of the filter element can only reach 10 mu m, the dirt holding capacity of the filter element is small, and the replacement period is short; the adsorber usually adopts a tubular (sintered or adhesive) activated carbon filter element, the adsorption efficiency of the adsorber is less than 60%, and the activated carbon particles are seriously fallen off.

The disadvantages of such a filtering and purifying device are mainly that the filtering and purifying efficiency is insufficient, especially the filtering efficiency of small particle size particle pollutants and heavy liquid hydrocarbons is very low; the replacement cycle of the filter element is short, and the filter element replacement workload is large due to the large number of the filter elements, so that the operation cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the filter purification efficiency is not enough, the replacement cycle of filter core is short, the filter core is in large quantity and the work load is changed greatly etc.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

the utility model provides a solvent rich liquid integrated filtering and purifying device for purifying natural gas, which comprises a filter and an absorber; the bottom of the filter is provided with a filtering liquid inlet pipe and a filtering liquid outlet pipe which are positioned on the same horizontal plane, and the bottom of the adsorber is provided with an adsorbing liquid inlet pipe and an adsorbing liquid outlet pipe which are positioned on the same horizontal plane; wherein, the filtering liquid outlet pipe is communicated with the adsorption liquid inlet pipe; at least one filtering filter element is fixedly arranged in the filter, the filtering precision of the filtering filter element is 1-5 mu m, and the pollutant holding capacity is more than or equal to 650 g/(L/min); at least one adsorption filter element is fixedly arranged in the adsorber, the iodine adsorption value of the adsorption filter element is more than or equal to 1200mg/g, and the contact time is more than or equal to 20 seconds.

The technical scheme of the utility model beneficial effect lies in: the filtering filter element greatly improves the filtering precision and the filtering efficiency of solid particles, effectively reduces the accumulation of small particles in a dehydration system and a regeneration system, and avoids the problems of system blockage, foaming and scaling. Meanwhile, the filter is used as a pre-filter of the solvent rich liquid integrated filtering and purifying device, so that the filtering precision is improved, the service life of a subsequent adsorber is effectively prolonged, and the adsorption performance of the adsorber is improved.

The technical scheme of the utility model can also realize through following further scheme:

furthermore, the filtering filter element is a folding filter element, and the outer diameter of the filtering filter element is larger than or equal to 150mm.

The beneficial effect of adopting the further technical scheme is that: adopt the foldable filter core of major diameter, can improve filter area by a wide margin, and then show and increaseed the pollutant carrying capacity to can prolong 5 to 6 times the replacement cycle of filtering the filter core, also reduce the work load that the filter core was changed simultaneously.

Furthermore, the adsorption filter element is a sandwich type active carbon filter element, and the outer diameter of the adsorption filter element is larger than or equal to 150mm.

The beneficial effect of adopting the further technical scheme is that: the sandwich type active carbon filter element with the large diameter is adopted, the active carbon adsorption volume of the filter element is far larger than that of the filter element with the small diameter, the number of the adsorption filter elements can be greatly reduced, and the replacement cost and the replacement workload of the filter element are reduced.

Further, the adsorption filter element comprises an upstream filter layer, an adsorption filter layer and a downstream filter layer which are fixedly sleeved from outside to inside in sequence; the upstream filter layer is a PP filter material with the filtering precision of 5 mu m; the adsorption and filtration layer is made of high-iodine-value bamboo activated carbon powder, the particle size is 200 meshes, and the strength is more than 96%; the downstream filtering layer is a PP filtering material with filtering precision of 3 mu m.

The beneficial effect of adopting the further technical scheme lies in that: the downstream filtering layer with the filtering precision of 3 mu m is additionally arranged at the downstream of the activated carbon adsorption filtering element, so that carbon particles in the adsorption filtering layer can be effectively prevented from falling off.

Further, the filter also comprises a shell, wherein the shell comprises a filtering cylinder body, a filtering liquid inlet pipe, a filtering liquid inlet cavity, a filtering partition plate, a filtering liquid outlet cavity and a filtering liquid outlet pipe; the filtering partition plate is fixedly arranged in the filtering cylinder body and divides an inner cavity of the filtering cylinder body into the filtering liquid inlet cavity and the filtering liquid outlet cavity which are arranged up and down; the filter is detachably arranged on the filter clapboard and is positioned in the filter liquid inlet cavity; the filtering liquid cavity is communicated with the inner cavity of the filtering filter element; the filtering liquid inlet pipe and the filtering liquid outlet pipe are positioned at the bottom of the filtering cylinder body; the filtering liquid inlet pipe is communicated with the filtering liquid inlet cavity, and the filtering liquid outlet pipe is communicated with the filtering liquid outlet cavity.

The beneficial effect of adopting the further technical scheme is that: in this structure, the rich liquid of solvent that awaits processing upwards flows into and filters the feed liquor chamber by the bottom of filtering the barrel, flows downwards again after the processing of filtering the filter core and filters the sap cavity, has improved the distribution of velocity of flow, has improved the filter effect.

Furthermore, the adsorber also comprises a shell, wherein the shell comprises an adsorption cylinder, an adsorption liquid inlet pipe, an adsorption liquid inlet cavity, an adsorption partition plate, an adsorption liquid outlet cavity and an adsorption liquid outlet pipe; the adsorption clapboard is fixedly arranged in the adsorption cylinder body and divides the inner cavity of the adsorption cylinder body into the adsorption liquid inlet cavity and the adsorption liquid outlet cavity which are arranged up and down; the adsorption filter element is detachably arranged on the adsorption partition plate and is positioned in the adsorption liquid inlet cavity; the adsorption liquid outlet cavity is communicated with the inner cavity of the adsorption filter element; the adsorption liquid inlet pipe and the adsorption liquid outlet pipe are positioned at the bottom of the adsorption cylinder body; the adsorption liquid inlet pipe is communicated with the adsorption liquid inlet cavity, and the adsorption liquid outlet pipe is communicated with the adsorption liquid outlet cavity.

The beneficial effect of adopting the further technical scheme lies in that: in this structure, the rich liquid of solvent that awaits processing upwards flows into the absorption feed liquor chamber by the bottom of absorption barrel, and the liquid chamber is adsorbed in the downward inflow again after the processing of absorption filter core, has increased the contact time of rich liquid of solvent with filtering the filter core, has improved adsorption effect.

Furthermore, the filtering liquid inlet pipe, the filtering liquid outlet pipe, the adsorption liquid inlet pipe and the adsorption liquid outlet pipe are positioned on the same horizontal plane.

The beneficial effect of adopting the further technical scheme lies in that: the installation and connection between the absorber and the filter are more convenient and quicker.

Further, the solvent is one of ethylene glycol, triethylene glycol or amine solution.

The utility model also provides a natural gas purification system, including the integrated filtration purification device of foretell solvent rich solution.

The beneficial effect who adopts above-mentioned further scheme is that, adopts this filtration purifier to improve the purification efficiency of pollutants such as granule pollutant of small particle size and heavy matter liquid hydrocarbon by a wide margin, can also effectively improve the adsorption efficiency of liquid hydrocarbon, organic degradation product, has reduced liquid pollutant effectively, especially the accumulation effect of heavy matter liquid hydrocarbon in the system, has advantages such as running cost low.

Drawings

Fig. 1 is a schematic top view of the solvent rich liquid integrated filtering and purifying device for purifying natural gas according to the present invention;

FIG. 2 is a cross-sectional view of the filter according to the present invention, showing the longitudinal section of the filter cartridge in an open state;

FIG. 3 is a front view of the filter of the present invention, showing the filter element mounting seat mounted on the filter partition plate;

fig. 4 is a cross-sectional view of the longitudinal section of the adsorber of the present invention in the open state of the end cap of the adsorption cylinder;

FIG. 5 is a front view of the adsorber of the present invention, showing the filter element mounting seat mounted on the adsorption partition plate;

FIG. 6 is a cross-sectional view of an adsorption cartridge of the adsorber of the present invention;

fig. 7 is a schematic structural view of the filter element mounting base of the present invention.

In the drawings, the reference numbers indicate the following list of parts:

1. a filter; 11. filtering the liquid inlet pipe;

12. a filtering baffle plate; 121. filtering the liquid outlet hole; 122. filtering the liquid inlet hole;

13. a filter cylinder; 131. a liquid inlet cavity is filtered; 132. filtering out the liquid cavity;

14. a filter element; 15. an end cover of the filtering cylinder body; 16. filtering the liquid outlet pipe;

2. an adsorber; 21. adsorbing a liquid inlet pipe;

22. an adsorption separator; 221. a liquid outlet hole is adsorbed; 222. adsorbing a liquid inlet hole;

23. adsorbing the cylinder; 231. adsorbing the liquid inlet cavity; 232. adsorbing the liquid outlet cavity;

24. adsorbing the filter element; 244. an upstream filtration layer; 245. an adsorption filtration layer; 246. a downstream filtration layer;

25. adsorbing the end cover of the cylinder body; 26. adsorbing the liquid outlet pipe;

3. a filter element mounting seat.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 7, the solvent rich liquid integrated filtering and purifying device for purifying natural gas of the present invention comprises a filter 1 and an adsorber 2; the bottom of the filter 1 is provided with a filtering liquid inlet pipe 11 and a filtering liquid outlet pipe 16 which are positioned on the same horizontal plane, and the bottom of the absorber 2 is provided with an absorbing liquid inlet pipe 21 and an absorbing liquid outlet pipe 26 which are positioned on the same horizontal plane; wherein, the filtrate pipe 16 is communicated with the absorption liquid inlet pipe 21; at least one filtering element 14 is fixedly arranged in the filter 1, the filtering precision of the filtering element 14 is 1-5 μm, and the pollutant carrying capacity is more than or equal to 650 g/(L/min); at least one adsorption filter element 24 is fixedly arranged in the adsorber 2, the iodine adsorption value of the adsorption filter element 24 is more than or equal to 1200mg/g, and the contact time is more than or equal to 20 seconds.

The utility model discloses a filtration filter core 14 that is used for the integrated filtration purifier of rich liquid of solvent of natural gas purification to adopt has improved solid particle's filter fineness and filtration efficiency by a wide margin, and the effectual granule particulate matter that has reduced gathers in dewatering system and regeneration system, has avoided the jam of system, the foaming, the scale deposit problem. Meanwhile, the filter 1 is used as a pre-filter of the solvent rich liquid integrated filtering and purifying device, so that the filtering precision is improved, the service life of the absorber 2 positioned behind the filter is effectively prolonged, and the adsorption performance of the absorber is improved.

The utility model discloses an absorption filter core 24 that is used for the integrated filtration purifier of rich liquid of solvent of natural gas purification to adopt has stronger adsorption efficiency and faster adsorption rate, can effectively improve the adsorption efficiency of liquid hydrocarbon, organic degradation product, has reduced liquid pollutants, especially heavy matter liquid hydrocarbon's the collecting effect in the system effectively.

Preferably, the filter cartridge 14 is a pleated filter cartridge having an outer diameter greater than or equal to 150mm; adopt the foldable filter core of major diameter, can improve filter area by a wide margin, and then show and increaseed the pollutant carrying capacity to can prolong 5 to 6 times the replacement cycle of filtering filter core 14, also reduce the work load that the filter core was changed simultaneously.

Further preferably, the outer diameter of the filter cartridge 14 is 160mm; the folding filter element with the outer diameter of 160mm is adopted, the filtering area of the folding filter element is 20-30 times of that of the traditional deep filter element with the outer diameter of 63mm, the number of the filtering filter elements 14 is reduced to one tenth of the original number, and the replacement cost and the replacement workload of the filter elements are further reduced.

The utility model discloses a length of filtering core 14 can be selected according to actual need, generally speaking, and filtering core 14 length is 400 ~ 1200mm the utility model discloses an in the embodiment, the length of filtering core 14 is 1016mm.

Preferably, the adsorption filter element 24 is a sandwich type active carbon filter element, and the outer diameter of the adsorption filter element is more than or equal to 150mm; further preferably, the outer diameter thereof is 160mm; adopt the major diameter's of external diameter to be 160mm intermediate layer formula active carbon filter core, its active carbon adsorption volume is 5 times of the minor diameter filter core that the external diameter is 63mm, can reduce the quantity of absorption filter core 24 to one fifth, has reduced the replacement cost and the change work load of filter core.

As shown in fig. 6, preferably, the adsorption filter element 24 includes an upstream filter layer 244, an adsorption filter layer 245 and a downstream filter layer 246 which are fixedly sleeved from outside to inside; the upstream filter layer 244 is a PP filter material with a filter precision of 5 μm, and the downstream filter layer 246 is a PP filter material with a filter precision of 3 μm; the material of the adsorption and filtration layer 245 is high iodine value bamboo activated carbon powder, the particle size is 200 meshes, and the strength is more than 96%.

The bamboo activated carbon powder with high iodine value is adopted, the adsorption capacity and the adsorption speed of the bamboo activated carbon powder are obviously superior to those of the traditional activated carbon material, and further, the adsorption efficiency and the service life of liquid hydrocarbon and organic degradation products are greatly improved. The accumulation effect of liquid pollutants, particularly heavy liquid hydrocarbons, in the system is effectively reduced.

The active carbon powder with the particle size of 200 meshes and the strength of more than 96 percent is adopted, so that the falling of the carbon particles can be effectively prevented.

The downstream filter layer 246 having a filter accuracy of 3 μm was provided downstream, and the carbon particles were further prevented from falling off from the adsorption filter element 24.

The filter 1 of the present invention further comprises a housing, which comprises a filtering cylinder 13, a filtering liquid inlet pipe 11, a filtering liquid inlet chamber 131, a filtering baffle 12, a filtering liquid outlet chamber 132 and a filtering liquid outlet pipe 16; the filtering partition plate 12 is fixedly installed in the filtering cylinder 13, and divides the inner cavity of the filtering cylinder 13 into a filtering liquid inlet cavity 131 and a filtering liquid outlet cavity 132 which are arranged up and down; the filtering filter element 14 is detachably arranged on the filtering partition plate 12 and is positioned in the filtering liquid inlet cavity 131; the filtrate chamber 132 is in communication with the interior chamber of the filter cartridge 14; the filtering liquid inlet pipe 11 and the filtering liquid outlet pipe 16 are positioned at the bottom of the filtering cylinder body 13; the filtrate inlet pipe 11 is communicated with the filtrate inlet chamber 131, and the filtrate outlet pipe 16 is communicated with the filtrate outlet chamber 132.

As shown in fig. 3 and 7, preferably, the filter partition plate 12 is provided with at least one filter liquid outlet hole 121, each filter liquid outlet hole 121 is provided with a welded filter element mounting seat 3, and the filter element mounting seat 3 is provided with a liquid channel along an axial direction thereof. The upper part of the filter element mounting seat 3 is detachably connected with the filter element 14 in a sealing way, and the lower part of the filter element mounting seat 3 is communicated with the filtered liquid cavity 132; a filtering liquid inlet hole 122 is also formed in the filtering partition plate 12, and a liquid outlet of the filtering liquid inlet pipe 11 is installed on the filtering partition plate 12 and corresponds to the filtering liquid inlet hole 122; when filtering the solvent rich liquid, the solvent rich liquid containing the contaminant flows into the filtering liquid inlet cavity 131 through the filtering liquid inlet pipe 11, after being filtered and purified by the filtering filter element 14, the solid contaminant is retained in the filtering liquid inlet cavity 131, and the purified solvent rich liquid flows into the filtering liquid outlet cavity 132, flows out of the filter 1 through the filtering liquid outlet pipe 16, and flows into the adsorber 2 through the adsorbing liquid inlet pipe 21 for further processing.

It should be noted that fig. 3 is a schematic structural diagram, and the specific number of filtrate holes 121 and cartridge mounting seat 3 is not limited to the specific number in fig. 3.

In the structure, the solvent rich liquid to be processed flows upwards into the filtering liquid inlet cavity 131 from the bottom of the filtering cylinder 13, and then flows downwards into the filtering liquid outlet cavity 132 after being processed by the filtering filter element 14, so that the contact time of the solvent rich liquid and the filtering filter element 14 is increased, and the filtering effect is effectively improved.

It should be noted that the solvent rich liquid has a sufficient flow rate when flowing into the filtrate inlet chamber 131 through the filtrate inlet pipe 11, and the flow rate can be provided by the pump body or other upstream devices.

Preferably, the filtering cylinder 13 is a vertically arranged cylinder structure, and the filtering core 14 is vertically arranged in the filtering cylinder 13; the top of the filtering cylinder 13 is provided with a filtering cylinder end cover 15 which can be opened and closed; when the filter 1 is used, the end cover 15 of the filtering cylinder body is closed; when the filter element 14 needs to be replaced, the end cover 15 of the filter cylinder body positioned at the top can be opened, and the filter element 14 is taken out or inserted into the filter cylinder body 13, so that the replacement process of the filter element 14 is simple, convenient and quick, and easy to install and disassemble.

Preferably, there are a plurality of filtering cartridges 14, and the plurality of filtering cartridges 14 are disposed around the liquid outlet of the filtered liquid inlet pipe 11 on the filtering partition 12; by adopting the arrangement mode, the filtering efficiency can be effectively increased.

Further preferably, the plurality of filter cartridges 14 are arranged in a centrosymmetric manner on the horizontal plane with respect to the center of the circle of the liquid outlet of the filter liquid inlet pipe 11.

Preferably, the adsorber 2 further comprises a housing, and the housing comprises an adsorption cylinder 23, an adsorption liquid inlet pipe 21, an adsorption liquid inlet cavity 231, an adsorption partition plate 22, an adsorption liquid outlet cavity 232 and an adsorption liquid outlet pipe 26; the adsorption clapboard 22 is fixedly arranged in the adsorption cylinder 23 and divides the inner cavity of the adsorption cylinder 23 into an adsorption liquid inlet cavity 231 and an adsorption liquid outlet cavity 232 which are arranged up and down; the adsorption filter element 24 is detachably arranged on the adsorption clapboard 22 and is positioned in the adsorption liquid inlet cavity 231; the adsorption liquid outlet cavity 232 is communicated with the inner cavity of the adsorption filter element 24; the adsorption liquid inlet pipe 21 and the adsorption liquid outlet pipe 26 are positioned at the bottom of the adsorption cylinder 23; the adsorption liquid inlet pipe 21 is communicated with the adsorption liquid inlet cavity 231, and the adsorption liquid outlet pipe 26 is communicated with the adsorption liquid outlet cavity 232.

As shown in fig. 5 and 7, preferably, the adsorption separator 22 is provided with at least one adsorption liquid outlet hole 221, each adsorption liquid outlet hole 221 is welded with the filter element mounting seat 3, and the filter element mounting seat 3 is provided with a liquid channel along the axial direction thereof. The upper part of the filter element mounting seat 3 is detachably connected with the adsorption filter element 24 in a sealing way, and the lower part of the filter element mounting seat 3 is communicated with the adsorption liquid outlet cavity 232; an adsorption liquid inlet hole 222 is also formed in the adsorption partition plate 22, and a liquid outlet of the adsorption liquid inlet pipe 21 is installed on the adsorption partition plate 22 and corresponds to the adsorption liquid inlet hole 222; when the rich ethylene glycol liquid is adsorbed and filtered, the rich ethylene glycol liquid which is subjected to pre-filtration by the filter 1 flows into the adsorption liquid inlet cavity 231 through the adsorption liquid inlet pipe 21, heavy liquid hydrocarbon and solid pollutants are remained in the adsorption liquid inlet cavity 231 after adsorption and filtration by the adsorption filter element 24, and the purified rich solvent liquid flows into the adsorption liquid outlet cavity 232 and flows out of the adsorber 2 through the adsorption liquid outlet pipe 26 to enter a downstream system for recycling or recycling.

It should be noted that fig. 5 is a schematic structural diagram, and the specific number of adsorption liquid outlet holes 221 and cartridge mounting seat 3 is not limited to the specific number in fig. 5.

In this structure, the solvent rich liquid to be treated flows into the adsorption liquid inlet chamber 231 from the bottom of the adsorption cylinder 23, and then flows into the adsorption liquid outlet chamber 232 after being treated by the adsorption filter element 24, so that the contact time between the solvent rich liquid and the adsorption filter element 24 is increased, and the adsorption and filtration effects are effectively improved.

Preferably, the adsorption cylinder 23 is a vertically arranged cylinder structure, and the adsorption filter element 24 is vertically arranged in the adsorption cylinder 23; the top of the adsorption cylinder 23 is provided with an adsorption cylinder end cover 25 which can be opened and closed; when the adsorber 2 is used, the end cover 25 of the adsorption cylinder body is closed; when the adsorption filter element 24 needs to be replaced, the adsorption cylinder end cover 25 positioned at the top can be opened, and the adsorption filter element 24 is taken out or inserted into the adsorption cylinder 23, so that the replacement process of the adsorption filter element 24 is simple, convenient and quick, and easy to install and disassemble.

Preferably, a plurality of adsorption filter elements 24 are provided, and the plurality of adsorption filter elements 24 are arranged on the adsorption partition plate 22 around the liquid outlet of the adsorption liquid inlet pipe 21; by adopting the arrangement mode, the filtering and adsorbing efficiency can be effectively increased.

Further preferably, the plurality of adsorption filter elements 24 are arranged in a centrosymmetric manner on a horizontal plane with respect to the center of the liquid outlet of the adsorption liquid inlet pipe 21.

Further preferably, the filtering liquid inlet pipe 11, the filtering liquid outlet pipe 16, the adsorbing liquid inlet pipe 21 and the adsorbing liquid outlet pipe 26 are located on the same horizontal plane, so that the installation and connection between the adsorber 2 and the filter 1 are simpler, more convenient and faster.

Preferably, the integrated filtration and purification device of the present invention can treat ethylene glycol, triethylene glycol or amine liquid. Ethylene glycol and triethylene glycol are solvent rich liquids for dehydrating natural gas, and amine liquids are solvent rich liquids for desulfurizing natural gas.

The utility model discloses an integrated filtration purification device of rich liquid of solvent's working process does:

the solvent rich liquid containing solid pollutants and liquid pollutants firstly enters the filtering liquid inlet cavity 131 of the filter 1 through the filtering liquid inlet pipe 11, the solvent rich liquid flows through the filtering filter element 14 from outside to inside, the particle pollutants are intercepted by the filtering material of the filtering filter element 14, and the filtered solvent rich liquid enters the filtering filter element 14 to flow downwards, passes through the filtering partition plate 12 and then is merged into the filtering liquid outlet cavity 132. At this point, most of the particulate contaminants in the solvent rich liquid are removed, but still mixed with the liquid contaminants. The filtered solvent rich solution enters the absorber 2 through the filtrate outlet pipe 16 and the absorption liquid inlet pipe 21, and continues to be treated.

The solvent rich liquid enters the adsorption liquid inlet cavity 231 of the adsorber 2 and flows through the adsorption filter element 24 from outside to inside, and the liquid pollutants are absorbed and intercepted by the adsorption filter layer 245 in the adsorption filter element 24, so that the solvent rich liquid is purified. At the same time, upstream filter layer 244 and downstream filter layer 246 also enable secondary filtration of residual particulate contaminants. The treated rich solvent enters the adsorption filter element 24 and flows downwards, passes through the adsorption partition plate 22 and then flows into the adsorption liquid outlet cavity 232. At the moment, both the particle pollutants and the liquid pollutants in the solvent rich liquid are effectively removed, and the standard of recycling or recovery can be achieved.

The treated solvent rich solution flows out of the device through the adsorption liquid outlet pipe 26 to complete the purification treatment.

The utility model discloses a seed natural gas clean system, including foretell solvent rich solution integrated filtration purification device.

The invention is illustrated below by means of specific examples:

example 1

The filter insert 14 of this embodiment has an outer diameter of 160mm, a length of 1016mm and a number of 6.

The size of the adsorption filter element 24 is the same as that of the filter element 14, the number of the adsorption filter elements is 39, and the filtering precision is 1 micron.

The filtering and purifying device of the embodiment is adopted to filter and purify the glycol rich solution, the flow rate is 30 square/hour, and the content of particulate matters is 10mg/L.

Through detection, in the ethylene glycol rich solution of the embodiment, the filtering efficiency of the particulate matters with the particle size larger than 1 micron is 99%, and the removal efficiency of the hydrocarbon substances is 80%. The replacement cycle (service life) of each filter cartridge 14 was 45 days. The replacement period of each adsorption filter element 24 is 180 days.

The time for replacement was 12 minutes for all the filter elements 14 in one filter 1, and 78 minutes for all the adsorption elements 24 in one adsorber 2.

Example 2

The filter insert 14 of this embodiment has an outer diameter of 160mm, a length of 1016mm, and a number of 3.

The size of the adsorption filter element 24 is the same as that of the filter element 14, the number of the adsorption filter elements is 20, and the filtering precision is 3 micrometers.

The filtering and purifying device of the embodiment is adopted to filter and purify the glycol rich solution, the flow rate is 15 square/hour, and the content of particulate matters is 6mg/L.

Through detection, in the ethylene glycol rich solution of the embodiment, the filtering efficiency of the particulate matters with the particle size larger than 3 microns is 99%, and the removal efficiency of the hydrocarbon substances is 80%. The replacement cycle (service life) for each filter cartridge 14 was 75 days. The replacement period for each adsorption cartridge 24 was 240 days.

In the replacement, the total filter cartridge 14 in one filter 1 takes 6 minutes, and the total adsorption cartridge 24 in one adsorber 2 takes 39 minutes.

Example 3

The filter cartridge 14 of this embodiment has an outer diameter of 160mm, a length of 1016mm and a number of 3.

The size of the adsorption filter element 24 is the same as that of the filter element 14, the number of the adsorption filter elements is 30, and the filtering precision is 1 micron.

The amine liquid is filtered and purified by adopting the filtering and purifying device of the embodiment, the flow is 30 square/hour, and the content of particulate matters is 10mg/L.

According to detection, in the amine liquid of the embodiment, the filtering efficiency of the particulate matters with the particle size larger than 1 micron is 99%, and the removal efficiency of the hydrocarbon substances is 82%. The replacement cycle (service life) for each filter cartridge 14 was 42 days. The replacement period for each adsorption cartridge 24 was 185 days.

In the replacement, the total number of filter elements 14 in one filter 1 was 11 minutes, and the total number of adsorption elements 24 in one adsorber 2 was 80 minutes.

Comparative example 1

The filtration purification apparatus of this comparative example includes a pre-filter, a middle adsorber, and a post-filter. Wherein, the filter elements in the front filter and the rear filter are wire-wound deep filter elements, the outer diameter is 63mm, the length is 1016mm, the filtering precision is 10 micrometers, and the number is 31.

The filtering and purifying device of the comparative example is adopted to filter and purify the glycol rich solution, the flow is 30 square/hour, and the content of particulate matters is 10mg/L.

The filter element in the middle adsorber is a sintered (bonded) active carbon filter element, is formed by bonding and extruding wood active carbon, has the same size as the filter elements in the front filter and the rear filter, and has 200 filter elements.

The filter element replacement cycle in the pre-filter and the post-filter was 7 days at a particulate content of 10mg/L.

The filtering efficiency of the particles with the particle size of more than 10 microns is 99 percent, and the filtering efficiency of the particles with the particle size of 1 micron is only about 10 percent. The middle adsorber had a hydrocarbon removal efficiency of 55%. The service life of the filter element in the middle adsorber is 100 days.

During replacement, the total filter element replacement time of the front filter and the rear filter is 46 minutes respectively, and the total filter element replacement time of the middle adsorber is 200 minutes.

Can find out through above-mentioned embodiment and comparative example, adopt the utility model discloses an when integrated filtration purifier handled ethylene glycol rich liquid or amine liquid, filtration purification efficiency is showing is higher than comparative example 1's device, especially the purification efficiency of small-particle size particle pollutant and heavy liquid hydrocarbon is higher. And simultaneously, the utility model discloses an in the device, the replacement cycle of filtering filter core 14 and absorption filter core 24 is longer, and the filter core replacement work volume is little, makes the running cost of complete machine reduce by a wide margin.

In examples 1 and 2 of the present invention, the particle size of the activated carbon powder in the adsorption filtration layer 245 is 200 mesh and the strength is more than 96%, which effectively prevents the carbon particles from falling off; a downstream filter layer 246 having a filter fineness of 3 μm was provided downstream to further prevent the carbon particles from falling off. Thus, examples 1 and 2 include only the filter 1 and the adsorber 2, and it is not necessary to provide a filter after the adsorber 2. In the comparative example, the filter element in the middle adsorber is formed by bonding and extruding the wood activated carbon, and a filter layer is not arranged at the downstream, so that the carbon particles are easy to fall off in use, and in order to prevent the fallen carbon particles from polluting purified glycol rich liquid or amine liquid, a filter positioned behind the adsorber is also required to be arranged in the comparative example.

In the description of the present invention, it should be noted that the terms "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, 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 implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate 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 first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "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 present 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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (9)

1. The integrated filtering and purifying device for the solvent rich liquid for purifying the natural gas is characterized by comprising a filter (1) and an adsorber (2); the bottom of the filter (1) is provided with a filtering liquid inlet pipe (11) and a filtering liquid outlet pipe (16) which are positioned on the same horizontal plane, and the bottom of the adsorber (2) is provided with an adsorbing liquid inlet pipe (21) and an adsorbing liquid outlet pipe (26) which are positioned on the same horizontal plane; wherein, the filtering liquid outlet pipe (16) is communicated with the adsorption liquid inlet pipe (21);

at least one filtering filter element (14) is fixedly arranged in the filter (1), the filtering precision of the filtering filter element (14) is 1-5 mu m, and the pollutant holding capacity is more than or equal to 650 g/(L/min);

at least one adsorption filter element (24) is fixedly arranged in the adsorber (2), the iodine adsorption value of the adsorption filter element (24) is more than or equal to 1200mg/g, and the contact time is more than or equal to 20 seconds.

2. The solvent rich liquid integrated filtering and purifying device for purifying natural gas as claimed in claim 1, wherein the filtering core (14) is a folding type filtering core, and the outer diameter is greater than or equal to 150mm.

3. The integrated filtering and purifying device for the rich solvent in the natural gas purification as claimed in claim 1, wherein the adsorption filter element (24) is a sandwich type activated carbon filter element, and the outer diameter of the sandwich type activated carbon filter element is greater than or equal to 150mm.

4. The integrated filtering and purifying device for the rich solvent solution used for purifying the natural gas as claimed in claim 3, wherein the adsorption filter element (24) comprises an upstream filter layer (244), an adsorption filter layer (245) and a downstream filter layer (246) which are fixedly sleeved from outside to inside;

the upstream filter layer (244) is a PP filter material with the filter precision of 5 mu m;

the adsorption and filtration layer (245) is made of high-iodine-value bamboo activated carbon powder, the particle size is 200 meshes, and the strength is more than 96%;

the downstream filtering layer (246) is a PP filtering material with filtering precision of 3 mu m.

5. The solvent rich liquid integrated filtering and purifying device for the purification of natural gas as claimed in any one of claims 1 to 4, wherein the filter (1) further comprises a housing, the housing comprises a filtering cylinder (13), a filtering liquid inlet pipe (11), a filtering liquid inlet cavity (131), a filtering partition plate (12), a filtering liquid outlet cavity (132) and a filtering liquid outlet pipe (16);

the filtering partition plate (12) is fixedly arranged in the filtering cylinder body (13) and divides the inner cavity of the filtering cylinder body (13) into the filtering liquid inlet cavity (131) and the filtering liquid outlet cavity (132) which are arranged up and down; the filtering filter element (14) is detachably arranged on the filtering partition plate (12) and is positioned in the filtering liquid inlet cavity (131);

the filtered liquid cavity (132) is communicated with the inner cavity of the filter element (14);

the filtering liquid inlet pipe (11) and the filtering liquid outlet pipe (16) are positioned at the bottom of the filtering cylinder body (13); the filtering liquid inlet pipe (11) is communicated with the filtering liquid inlet cavity (131), and the filtering liquid outlet pipe (16) is communicated with the filtering liquid outlet cavity (132).

6. The integrated filtration and purification device for solvent rich liquid used in natural gas purification of claim 5, wherein the adsorber (2) further comprises a housing, the housing comprises an adsorption cylinder (23), an adsorption liquid inlet pipe (21), an adsorption liquid inlet cavity (231), an adsorption partition plate (22), an adsorption liquid outlet cavity (232) and an adsorption liquid outlet pipe (26);

the adsorption partition plate (22) is fixedly arranged in the adsorption cylinder (23) and divides the inner cavity of the adsorption cylinder (23) into an adsorption liquid inlet cavity (231) and an adsorption liquid outlet cavity (232) which are arranged up and down; the adsorption filter element (24) is detachably arranged on the adsorption clapboard (22) and is positioned in the adsorption liquid inlet cavity (231);

the adsorption liquid outlet cavity (232) is communicated with the inner cavity of the adsorption filter element (24);

the adsorption liquid inlet pipe (21) and the adsorption liquid outlet pipe (26) are positioned at the bottom of the adsorption cylinder body (23); the adsorption liquid inlet pipe (21) is communicated with the adsorption liquid inlet cavity (231), and the adsorption liquid outlet pipe (26) is communicated with the adsorption liquid outlet cavity (232).

7. The integrated filtration and purification device for solvent rich liquid used in natural gas purification of claim 6, characterized in that the filtration inlet pipe (11), the filtration outlet pipe (16), the adsorption inlet pipe (21) and the adsorption outlet pipe (26) are located at the same level.

8. The integrated filtering and purifying device for the rich solvent solution used in the purification of the natural gas according to any one of claims 1 to 4, wherein the solvent is one of ethylene glycol, triethylene glycol or amine solution.

9. A natural gas purification system comprising the solvent rich liquid integrated filtration purification apparatus for natural gas purification according to any one of claims 1 to 8.

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