CN210751990U

CN210751990U - Membrane separation and pressure swing adsorption combined treatment device

Info

Publication number: CN210751990U
Application number: CN201921543182.1U
Authority: CN
Inventors: 张天来; 张海玉; 刘艳
Original assignee: Chengdu Tianlan Chemical Engineering Technology Co ltd
Current assignee: Chengdu Tianlan Chemical Engineering Technology Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-06-16
Anticipated expiration: 2029-09-17

Abstract

The utility model provides a membrane separation and pressure swing adsorption combined treatment device, which relates to the technical field of chemical equipment and comprises a permeation membrane component and a pressure swing adsorption component, wherein the inlet of the permeation membrane component is communicated with a raw material gas pipe, the osmotic phase outlet of the permeation membrane component is communicated with an osmotic phase treatment system, and the osmotic phase outlet of the permeation membrane component is communicated with the gas inlet pipe of the pressure swing adsorption component; the pressure swing adsorption also comprises a reverse discharge pipe, a pressure equalizing pipe, a purging pipe, an air outlet pipe and a plurality of adsorption towers; one end of each adsorption tower is communicated with the air inlet pipe and the reverse discharge pipe through valves respectively, the other end of each adsorption tower is communicated with the air outlet pipe and the purging pipe through valves respectively, and the pressure equalizing pipe is communicated with the adsorption towers respectively; the utility model relates to a rationally, the high concentration that the feed gas was handled through the infiltration membrane subassembly oozes the afterphase and still keeps the high pressure, can directly get into and ooze the afterphase processing system and handle, and the infiltration phase is discharged into the pressure swing adsorption subassembly and is handled the back, the effectual purity that has improved, reaches use concentration.

Description

Membrane separation and pressure swing adsorption combined treatment device

Technical Field

The utility model relates to a chemical industry equipment technical field particularly, relates to a membrane separation and pressure swing adsorption combine processing apparatus.

Background

In chemical production, the pressure of some raw material gases is very high, but the concentration of the high boiling point component needs to be concentrated before use, and the high boiling point component needs to be kept at high pressure after concentration so as to enter the next process for direct use. If a pressure swing adsorption device is adopted for separation, high boiling point components desorbed from the bottom of the tower are in a low-pressure state, if the pressure swing adsorption device is applied to a high-pressure process condition, a compressor is adopted for pressurization, extra energy consumption is generated, and the overhaul and maintenance operations of the compressor are complicated and full of uncertainty; if the membrane separation technology is used for separation, gas is easily separated into a permeable phase and a permeable phase, the pressure drop of the permeable phase is small, the permeable phase has a certain pressure drop, the energy consumption is low, but the separation purity is insufficient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a membrane separation and pressure swing adsorption combine processing apparatus, its mode that adopts infiltration membrane subassembly and pressure swing adsorption subassembly series combination operation carries out effective separation to the feed gas, guarantees that high boiling point component keeps the high pressure state.

The embodiment of the utility model is realized like this:

a membrane separation and pressure swing adsorption combined treatment device comprises a permeable membrane component and a pressure swing adsorption component; the inlet of the permeable membrane component is communicated with the raw material gas pipe, the retentate outlet of the permeable membrane component is communicated with the retentate treatment system, and the permeate outlet of the permeable membrane component is communicated with the gas inlet pipe of the pressure swing adsorption component; the pressure swing adsorption component also comprises a reverse discharge pipe, a pressure equalizing pipe, a purging pipe (which can also be used as a forward discharge pipe), an air outlet pipe and a plurality of adsorption towers; one ends of the adsorption towers are respectively communicated with the air inlet pipe and the reverse discharge pipe through valves, the other ends of the adsorption towers are respectively communicated with the air outlet pipe and the purging pipe through valves, and the pressure equalizing pipes are respectively communicated with the adsorption towers.

Furthermore, the number of the adsorption towers is 3-8.

Further, the number of the adsorption towers is 5.

Furthermore, a pretreatment system is arranged between the permeable membrane module and the feed gas pipe, and the pretreatment system comprises a dust removal tower.

Furthermore, the pretreatment system also comprises a purifier used for removing components harmful to the permeable membrane component in the feed gas, and the purifier is arranged between the dust removal tower and the permeable membrane component.

Further, the valve is an angle valve, a butterfly valve, a gate valve or a ball valve.

Further, the retentate phase processing system is a decarbonization system.

Further, the retentate phase processing system is a synthetic ammonia system.

The utility model has the advantages that:

the utility model relates to a rationally, the high concentration that the feed gas was handled through the infiltration membrane subassembly oozes the afterphase and still keeps the high pressure, can directly get into and ooze the afterphase processing system and handle, and the infiltration phase is discharged into the pressure swing adsorption subassembly and is handled the back, the effectual purity that has improved, reaches use concentration.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a combined membrane separation and pressure swing adsorption treatment apparatus provided in example 1 of the present invention;

FIG. 2 is a schematic view of a combined membrane separation and pressure swing adsorption treatment apparatus provided in example 2 of the present invention;

icon: 1-permeation membrane module, 2-pressure swing adsorption module, 21-air inlet pipe, 22-reverse discharge pipe, 23-pressure equalizing pipe, 24-purging pipe, 25-air outlet pipe, 26-adsorption tower, 3-raw material air pipe, 4-retentate phase treatment system, 5-pretreatment system, 51-dust removal tower, 52-purifier and 6-cis-bleeding buffer tank.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.

Example 1

Referring to fig. 1, the present embodiment provides a membrane separation and pressure swing adsorption combined treatment apparatus, including a permeable membrane module 1 and a pressure swing adsorption module 2, an inlet of the permeable membrane module 1 is communicated with a raw material gas pipe 3, a retentate phase outlet of the permeable membrane module 1 is communicated with a retentate phase treatment system 4, and a permeate phase outlet of the permeable membrane module 1 is communicated with a gas inlet pipe 21 of the pressure swing adsorption module 2; the pressure swing adsorption also comprises a reverse release pipe 22, a pressure equalizing pipe 23, a purging pipe 24, an air outlet pipe 25 and a plurality of adsorption towers 26; one end of each of the adsorption towers 26 is respectively communicated with the gas inlet pipe 21 and the reverse discharge pipe 22 through a valve, and the other end of each of the adsorption towers 26 is respectively communicated with the gas outlet pipe 25 and the purging pipe (which can also be used as a forward discharge pipe) 24 through a valve, in the embodiment, the purging pipe 24 is communicated with a forward discharge buffer tank 6 to purge the adsorption towers 26, and the adsorbent which is adsorbed to be saturated undergoes uniform descending, sequential discharge, reverse discharge, purging, uniform ascending and final ascending and enters the adsorption timing sequence again to complete a working period, in other embodiments, the purging pipe 24 can be communicated with the gas outlet pipe 25 to purge by using product gas, and the purging pipe 24 can be communicated with other gases to purge; the pressure equalizing pipe 23 communicates with a plurality of adsorption towers 26 respectively, and the quantity of adsorption tower 26 is 3 ~ 8 usually, and in this embodiment, the quantity of adsorption tower 26 is 5, and the valve that adopts in the pipeline can be angle valve, butterfly valve, gate valve or ball valve.

The retentate phase treatment system 4 may be a decarbonization system, a synthetic ammonia system, or the like.

The raw material gas enters the osmotic membrane module 1 through the raw material gas pipe 3, most of high boiling point components in the raw material gas are discharged through the retentate phase outlet and low boiling point components are discharged through the permeate phase outlet by utilizing the osmotic membrane module 1, so that the separation is realized, the high boiling point components are discharged from the retentate phase outlet, the pressure drop is small, the high boiling point components can be directly discharged into the retentate phase treatment system for treatment, the pressurization process is reduced, and the energy consumption and the equipment investment cost are reduced; the low boiling point component gets into adsorption tower 26 through intake pipe 21 and refines back and discharges from outlet duct 25 and collect the utilization, accomplish the adsorption process, the valve on other pipelines all keeps closing this moment, adsorb need carry out the desorption to the adsorption tower after a period, resume its adsorption performance, close intake pipe 21 and outlet duct 25 this moment, turn on equalizer tube 23 in proper order, open in the same direction as putting pipe (can regard as blowing pipe again) 24 and put the pipe 22 in the opposite direction, the desorption that begins to step down, a plurality of adsorption towers 26 can be in groups adsorb and desorb the work in turn, keep continuously handling the feed gas, it needs to explain that, equalizer tube 23's quantity is two.

When the substance adsorbed in the adsorption tower 26 is a pure adsorption phase, the desorbed gas discharged from the reverse-release pipe 22 can be pressurized by a compressor and then enter the raw material gas pipe 3 for recycling.

Example 2

This example includes all the contents of example 1, except that in order to increase the service life of the permeation membrane module, the feed gas is first pretreated before entering the permeation membrane module, and the specific implementation is as follows: referring to fig. 2, a pretreatment system 5 is further disposed between the permeable membrane module 1 and the raw gas pipe 3, the pretreatment system 5 includes a dust removal tower 51 for effectively removing particles in the raw gas to avoid blocking the permeable membrane module 1, and the pretreatment system 5 further includes a purifier 52 for removing harmful components (such as ammonia) in the raw gas to the permeable membrane module 1, wherein the purifier 52 is disposed between the dust removal tower 51 and the permeable membrane module 1.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A membrane separation and pressure swing adsorption combined treatment device is characterized in that: comprises a permeable membrane component (1) and a pressure swing adsorption component (2); an inlet of the permeable membrane component (1) is communicated with the raw material gas pipe (3), a permeable phase outlet of the permeable membrane component (1) is communicated with the permeable phase processing system (4), and a permeable phase outlet of the permeable membrane component (1) is communicated with the gas inlet pipe (21) of the pressure swing adsorption component (2); the pressure swing adsorption component (2) also comprises a reverse release pipe (22), a pressure equalizing pipe (23), a purging pipe (24), an air outlet pipe (25) and a plurality of adsorption towers (26); one ends of the adsorption towers (26) are respectively communicated with the air inlet pipe (21) and the inverse release pipe (22) through valves, the other ends of the adsorption towers (26) are respectively communicated with the air outlet pipe (25) and the purging pipe (24) through valves, and the pressure equalizing pipe (23) is respectively communicated with the adsorption towers (26).

2. The combined membrane separation and pressure swing adsorption process plant of claim 1, wherein: the number of the adsorption towers (26) is 3-8.

3. The combined membrane separation and pressure swing adsorption process plant of claim 1, wherein: the number of the adsorption towers (26) is 5.

4. The combined membrane separation and pressure swing adsorption process plant of claim 1, wherein: a pretreatment system (5) is arranged between the permeable membrane module (1) and the raw material gas pipe (3), and the pretreatment system (5) comprises a dust removal tower (51).

5. The combined membrane separation and pressure swing adsorption process plant of claim 4, wherein: the pretreatment system (5) further comprises a purifier (52) used for removing components harmful to the permeation membrane module (1) in the raw material gas, and the purifier (52) is arranged between the dust removal tower (51) and the permeation membrane module (1).

6. The combined membrane separation and pressure swing adsorption process plant of claim 1, wherein: the valve is an angle valve, a butterfly valve, a gate valve or a ball valve.

7. The combined membrane separation and pressure swing adsorption process plant of claim 1, wherein: the retentate phase treatment system (4) is a decarburization system.

8. The combined membrane separation and pressure swing adsorption process plant of claim 1, wherein: the retentate phase treatment system (4) is a synthetic ammonia system.