Multi-element integrated purification device for alcohol amine in wet desulphurization, decarbonization and dehydration process of gas

Abstract

The utility model discloses a multi-element integrated purification device for alcohol amine in a gas wet-process desulfurization, decarbonization and dehydration process. The multi-element integrated purification device comprises three core units, namely a scattered filtration unit, an adsorption unit and a microfiltration unit, which are horizontally arranged in sequence, and a multi-element integrated compact device which is formed by directly connecting end-to-end flanges, integrating and fixing the end-to-end flanges on a support without any external connecting pipeline, wherein the material inlet pipe is connected to the head end of the scattered filtration unit, and the product outlet pipe is connected to the tail end of the microfiltration unit. The integrated device has the beneficial effects that the bulk filtration unit, the adsorption unit and the microfiltration unit are directly and sequentially connected end to end through flanges to form the integrated device, so that the overall low-investment advantages of equipment quantity, connecting pipeline length, equipment occupied area and the like are formed; meanwhile, the influence of dissolved exhaust gas residence on the operation efficiency and the service life of the filter internal part and the adsorbent is eliminated, the advantage of simplicity and convenience in operation and maintenance is formed, and the advantage of low operation and maintenance cost is also formed.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial process purification and separation, in particular to a multi-integrated purification device for alcohol amines in a gas wet desulfurization, decarbonization and dehydration process. Background Art

[0002] In many industries such as petroleum refining, energy chemical industry, coking, pharmaceuticals, and sanitation, it is often necessary to use special equipment and professional process methods to purify the gas wet desulfurization, decarbonization, and dehydration process with alcohol amines. For example, the alcohol amine purification treatment of hydrocarbons and oil residue particles discharged from the circulating gas desulfurization tower of the catalytic hydrogenation unit of the petrochemical refining project, the diethylene glycol purification treatment containing tar and clay discharged from the dehydration tower of the coal-to-natural gas project, the methanol purification treatment containing light hydrocarbons and dust discharged from the desulfurization absorption tower of the coal chemical project, and the purification treatment of oily and dusty wastewater, etc.

[0003] During the purification process, a large number of various equipment devices need to be installed, the pipelines are long, the control is complicated, and each device operates independently. These devices are controlled independently, which makes stable control difficult and the equipment maintenance cost high. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is to provide a multi-integrated purification device for alcohol amines in the process of wet desulfurization, decarbonization and dehydration of gas in view of the current status of the prior art.

[0006] (II) Technical solution

[0007] The utility model is realized by the following technical scheme: the utility model proposes a multi-in-one purification device for alcohol amines in the process of wet desulfurization, decarbonization and dehydration of gas, comprising a bulk filter unit, an adsorption unit and a microfiltration unit core three units arranged horizontally in sequence, and a multi-in-one compact device formed by directly connecting the head and tail flanges without any external connecting pipelines and being integrated and fixed on a support; wherein the material inlet pipe is connected to the head end of the bulk filter unit, and the product outlet pipe is connected to the tail end of the microfiltration unit, the bulk filter unit is the starting unit of the device of the utility model, and the small-sized gel and solid impurities carried by the material are removed by using the unit and the liquid is dispersed, so as to create the prerequisite for the efficient and stable operation of the subsequent adsorption unit; the adsorption unit is immediately arranged at the rear end of the bulk filter unit, and other liquid components with large solubility parameters different from the mainstream liquid are adsorbed and removed by using the unit to purify the mainstream liquid; the microfiltration unit is located at the end of the device, and the fine-sized particle dispersed phase escaping from the adsorption unit is deeply removed by using the unit to ensure the product liquid quality.

[0008] Furthermore, the bulk filter unit comprises a bulk filter housing, bulk filter internals, bulk filter main plate, bulk filter auxiliary plate, bulk filter liquid level system, bulk filter head and tail connection flanges and auxiliary components; the adsorption unit comprises an adsorption housing, an adsorbent, head and tail filter elements, head and tail partitions, an adsorption liquid inlet pipe, an adsorption liquid outlet pipe, head and tail connection flanges, an adsorption liquid level system and a liquid level pipe and other auxiliary components; the microfiltration unit is located at the end of the device, and comprises a microfiltration housing, microfiltration internals, microfiltration main and auxiliary plate, head and tail connection flanges, a head and a liquid level pipe, a microfiltration liquid level system and other auxiliary components; the material inlet pipe is connected and fixed to the outside of the bulk filter housing, and the product outlet pipe is connected and fixed to the outside of the microfiltration housing; the bulk filter unit, the adsorption unit and the microfiltration unit are fixed to the support through their respective legs and form an integrated device without any external pipelines and directly connected in sequence by the head and tail flanges of each unit.

[0009] Furthermore, the bulk filter housing is a cylinder, and a bulk filter auxiliary flower plate is arranged on the radial cross section at its rear end, and the bulk filter auxiliary flower plate is sealed and connected to the inner wall of the bulk filter housing on all sides; the bottom end of the bulk filter inner component is placed in the circular hole of the bulk filter auxiliary flower plate, and the bulk filter inner component sealing gasket and the bulk filter auxiliary flower plate form a tight seal; then the bulk filter main flower plate is placed on the radial cross section of the head end inside the bulk filter housing, and the center of the top cover of each bulk filter inner component is aligned and fixed with the center of the small circular hole of the bulk filter main flower plate.

[0010] By adopting the above technical solution, the bulk filter inner part is firmly fixedly installed in the bulk filter shell and can play the corresponding functions of pre-removing solid impurities from the material and implementing liquid-liquid dispersion.

[0011] Furthermore, the bulk filter internal part is a filter element of a common shape with a top elastic cover and an elastic sealing gasket, and the filtering accuracy is 10 microns.

[0012] By adopting the above technical solution, the small-sized gel and solid impurities carried by the material can be effectively removed, and liquid-liquid dispersion is implemented so that other liquid components with large solubility parameters different from the mainstream liquid are evenly distributed with the mainstream liquid, providing guarantee conditions for the efficient and stable operation of the subsequent adsorption unit.

[0013] Furthermore, the bulk filter positive flower plate is mainly composed of bulk filter positive flower plate frame spokes that firmly connect the bulk filter positive flower plate frame outer ring and the bulk filter positive flower plate frame inner ring to form a common flower plate with an outer diameter equal to the inner diameter D1 of the bulk filter shell, and the bulk filter positive flower plate spokes and the bulk filter positive flower plate frame inner ring are also provided with bulk filter positive flower plate small circular holes whose number is equal to the number of the bulk filter internals and whose inner diameter is d3, so that the total area of ​​all the bulk filter positive flower plate small circular holes and the bulk filter positive flower plate large fan holes on the bulk filter positive flower plate is not less than 70% of the bulk filter positive flower plate area.

[0014] By adopting the above technical solution, the top end support is provided for the bulk filter inner component while ensuring sufficient flow capacity, so as to avoid deformation and damage to the bottom of the bulk filter inner component.

[0015] Furthermore, the auxiliary flower plate of the bulk filter is formed on a circular plate with the same size as the inner diameter D1 of the bulk filter housing, and the same number of circular holes as the bulk filter internal parts and the inner diameter d4 are opened on the auxiliary flower plate of the bulk filter, and the center of the circular hole of the auxiliary flower plate of the bulk filter is aligned with the center of the small circular hole of the main flower plate of the bulk filter.

[0016] By adopting the above technical solution, positioning support and sealing are provided for the bottom of the bulk filter inner component.

[0017] Furthermore, the order of the outer diameter d1 of the bulk filter inner part, the outer diameter d2 of the bulk filter inner part sealing gasket, the inner diameter d3 of the small circular hole of the bulk filter main flower plate and the inner diameter d4 of the circular hole of the bulk filter auxiliary flower plate is: d3 <d1<d4<d2。

[0018] By adopting the above technical solution, reliable support and reliable sealing connection of bulk filter internals can be achieved, which is beneficial to efficient operation and simple maintenance of the bulk filter unit.

[0019] Furthermore, a pressure gauge connection pipe is provided on the material inlet pipe side to facilitate monitoring of pressure and pressure drop changes so as to carry out timely inspection and maintenance; an elliptical head is provided at the head end of the bulk filter housing, and a liquid level monitoring system is provided on the upper and lower sides of the elliptical head to facilitate real-time monitoring of the liquid level and its changes so as to guide operation; a bulk filter drain pipe is provided on the lower outer side of the bulk filter housing to facilitate cleaning, safety, inspection and maintenance operations on the bulk filter unit.

[0020] Furthermore, the adsorption shell is a cylinder, and the head and tail ends are respectively provided with curved heads with connecting flanges; on the radial cross-section on the inner side of the straight cylinder end of the adsorption shell close to the two heads, a head end partition and a tail end partition with a diameter equal to the inner diameter D2 of the adsorption shell are symmetrically arranged according to the vertical center line of the adsorption shell, and the circumference of the partition is fitted and fixed to the inner wall of the adsorption shell; on the inner side of the head end partition and the tail end partition, a head end filter element and a tail end filter element with a diameter equal to the inner diameter D2 of the adsorption shell are also arranged, and the filter elements are arranged opposite to each other and fixed on their respective corresponding partitions; the space formed by the head end filter element, the tail end filter element and the inner wall of the adsorption shell is filled with adsorbent.

[0021] By adopting the above technical solution, other liquid components with greatly different solubility parameters from the mainstream liquid of the material can be effectively adsorbed and removed, thereby purifying the mainstream liquid.

[0022] Furthermore, the adsorption head end flange is directly connected to the bulk filtration tail end flange, so that the adsorption unit is directly connected to the bulk filtration unit.

[0023] By adopting the above technical solution, it can be ensured that the liquid entering the adsorption unit is completely from the bulk filtered liquid processed by the bulk filtration unit, and the space and investment of indirect pipe connection between units can be greatly saved, and it is convenient to operate.

[0024] Furthermore, the adsorbent is activated carbon, and the particle equivalent diameter is not less than 3 mm.

[0025] By adopting the above technical solution, other liquid component hydrocarbons carried by the bulk filtered liquid and having solubility parameters greatly different from those of the mainstream liquid are adsorbed and removed, thereby purifying the mainstream liquid.

[0026] Furthermore, the head-end filter element and the tail-end filter element have exactly the same structural dimensions and are made of a circular mesh felt made of a random wire mesh, the mesh equivalent diameter of which is not greater than 1.5 mm, and the porosity of the filter element is not less than 70%.

[0027] By adopting the above technical solution, the smaller-sized broken adsorbent is intercepted to prevent it from entering the front and rear units and causing excessive loss of adsorbent.

[0028] Furthermore, the head end partition and the tail end partition have the same structural dimensions and are circular plates with uniform openings, and the opening rate is not less than 70%.

[0029] By adopting the above technical solution, support is provided for the head-end filter element, the tail-end filter element and the adsorbent to maintain their shapes, thereby preventing the head-end filter element, the tail-end filter element and the loaded adsorbent from changing in shape during operation, thereby preventing the adsorption effect of the adsorption unit on other liquid components carried by the filtered liquid that have solubility parameters greatly different from those of the mainstream liquid from being unstable.

[0030] Furthermore, liquid level pipes are provided on the upper and lower sides of the adsorption shell and a liquid level control system is installed, so that the liquid level of the adsorption unit and its changes can be monitored to guide the control operation; pressure gauge pipes are provided on the liquid inlet pipe and the liquid outlet pipe of the adsorption unit to facilitate monitoring of pressure and pressure drop changes for timely inspection and maintenance; a manhole and an adsorption drain pipe are provided on the lower side of the adsorption shell, and an exhaust pipe is also provided on the upper side of the adsorption shell, which is conducive to convenient gas-liquid replacement and inspection and maintenance of the device.

[0031] Furthermore, the microfiltration housing is arranged horizontally, and a microfiltration auxiliary flower plate is arranged on the radial cross-section of the internal tail end, and the microfiltration auxiliary flower plate is sealed and connected to the inner wall of the microfiltration housing on all sides; the bottom end of the microfiltration inner component is placed in the circular hole of the microfiltration auxiliary flower plate to communicate with the microfiltration inner cavity, and the microfiltration inner component sealing gasket and the microfiltration auxiliary flower plate form a seal; then the microfiltration main flower plate is arranged on the radial cross-section of the internal head end of the microfiltration housing, and the center of the top cover of each microfiltration inner component is aligned and fixed with the center of the small circular hole of the microfiltration main flower plate.

[0032] By adopting the above technical solution, the microfiltration inner part is firmly fixedly installed in the microfiltration housing and can exert the effect of the microfiltration inner part on deep removal of fine solid impurities from the adsorbed liquid.

[0033] Furthermore, the microfiltration internals have the same external structure as the bulk filtration internals, and a common filter element with a top elastic cover and an elastic sealing pad is selected, and the filtration accuracy is 5 microns.

[0034] By adopting the above technical solution, the fine-sized gel and solid impurities carried by the adsorbed liquid can be effectively removed.

[0035] Furthermore, the microfiltration positive flower plate has the same appearance and structure as the bulk filter positive flower plate, and is mainly composed of microfiltration positive flower plate frame spokes that firmly connect the microfiltration positive flower plate frame outer ring and the microfiltration positive flower plate frame inner ring to form a common flower plate with an outer diameter equal to the inner diameter D3 of the microfiltration shell, and the microfiltration positive flower plate frame spokes and the microfiltration positive flower plate frame inner ring are also provided with microfiltration positive flower plate small circular holes with an inner diameter of d3, the number of which is equal to the number of microfiltration internals, so that the total area of ​​all microfiltration positive flower plate small circular holes and microfiltration positive flower plate large fan holes on the microfiltration positive flower plate is not less than 70% of the microfiltration positive flower plate area.

[0036] By adopting the above technical solution, the top end support is provided for the microfiltration inner component to avoid deformation and damage to the bottom of the microfiltration inner component.

[0037] Furthermore, the microfiltration auxiliary flower plate has the same appearance and structure as the bulk filter auxiliary flower plate, and a circular plate with the same size as the inner diameter D3 of the microfiltration shell is used to open microfiltration auxiliary flower plate circular holes with the same number as the microfiltration internal parts and the inner diameter d4, and the centers of the circular holes of the microfiltration auxiliary flower plate are aligned with the centers of the small circular holes of the microfiltration main flower plate.

[0038] By adopting the above technical solution, positioning support and sealing are provided for the bottom of the microfiltration internal component.

[0039] Furthermore, the order of the outer diameter d1 of the microfiltration inner part, the outer diameter d2 of the microfiltration inner part sealing gasket, the inner diameter d3 of the small circular hole of the microfiltration positive flower plate and the inner diameter d4 of the circular hole of the microfiltration secondary flower plate is: d3 <d1<d4<d2。

[0040] By adopting the above technical solution, reliable support and reliable sealing connection of microfiltration internals can be achieved, which is beneficial to efficient operation and simple maintenance of the microfiltration unit.

[0041] Furthermore, a pressure gauge connection pipe is provided on the outside of the product outlet pipe to monitor the pressure and pressure drop changes so as to carry out timely inspection and maintenance; an elliptical head is provided at the rear end of the microfiltration housing, and a liquid level monitoring system is provided on the upper and lower sides of the elliptical head to monitor the liquid level and its changes in real time so as to guide operation; a microfiltration drain pipe is provided on the lower outer side of the microfiltration housing to facilitate cleaning, safety, inspection and maintenance operations on the microfiltration unit.

[0042] (III) Beneficial effects

[0043] Compared with the prior art, the utility model has the following beneficial effects:

[0044] 1. The utility model adopts the bulk filtration unit, adsorption unit and microfiltration unit to be directly connected in sequence by the head and tail flanges to form an integrated device, thus forming the overall advantages of low investment in terms of equipment quantity, connecting pipeline length and equipment footprint;

[0045] 2. The utility model integrates the bulk filtration unit, adsorption unit and microfiltration unit into an integrated device by directly connecting the head and tail flanges in sequence, thereby eliminating the influence of dissolved exhaust gas retention on the operating efficiency and service life of the filter internals and adsorbent, forming the advantage of simple operation and maintenance, and also forming the advantage of low cost of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a typical structural schematic diagram of the multi-in-one purification device for alcohol amines in the gas wet desulfurization, decarbonization and dehydration process described in the utility model;

[0047] Figure 2 It is a structural schematic diagram of a bulk filter unit in a multi-in-one purification device for alcohol amines in a gas wet desulfurization, decarbonization and dehydration process according to the utility model;

[0048] Figure 3 It is a schematic structural diagram of the bulk filter internal parts in the multi-in-one purification device for alcohol amines in the gas wet desulfurization, decarbonization and dehydration process described in the utility model;

[0049] Figure 4 It is a side view of a loose filter positive flower plate in the multi-in-one purification device for alcohol amines in the gas wet desulfurization, decarbonization and dehydration process described in the utility model;

[0050] Figure 5 It is a side view of the bulk filter auxiliary flower plate in the multi-in-one purification device for alcohol amines in the gas wet desulfurization, decarbonization and dehydration process described in the utility model;

[0051] Figure 6 It is a schematic structural diagram of an adsorption unit in a multi-in-one purification device for alcohol amines in a gas wet desulfurization, decarbonization and dehydration process according to the utility model;

[0052] Figure 7It is a side view of the head-end filter element in the multi-in-one purification device for alcohol amines in the gas wet desulfurization, decarbonization and dehydration process of the utility model;

[0053] Figure 8 It is a side view of the head end partition in the multi-in-one purification device for alcohol amines in the gas wet desulfurization, decarbonization and dehydration process of the utility model;

[0054] Fig. 9 It is a structural schematic diagram of a microfiltration unit in a multi-in-one purification device for alcohol amines in a gas wet desulfurization, decarbonization and dehydration process according to the utility model.

[0055] The following are the descriptions of the reference numerals:

[0056] 1. Material inlet pipe; 2. Bulk filter unit; 20. Bulk filter housing; 21. Bulk filter inner parts; 21a. Outer surface of bulk filter inner parts; 21b. Inner surface of bulk filter inner parts; 21c. Top of bulk filter inner parts; 21d. Bottom of bulk filter inner parts; 21e. Top cover of bulk filter inner parts; 21f. Bulk filter inner parts sealing gasket; 22. Bulk filter positive plate; 22a. Outer ring of bulk filter positive plate frame; 22b. Inner ring of bulk filter positive plate frame; 22c. Spokes of bulk filter positive plate frame; 22d. Small round holes of bulk filter positive plate; 22e. Large fan holes of bulk filter positive plate; 23. Bulk filter auxiliary plate; 23a. Bulk filter auxiliary plate frame; 23b. Circular holes of bulk filter auxiliary plate; 24. Bulk filter liquid level system; 24a. Bulk filter liquid level upper pipe; 24b. Bulk filter liquid level lower pipe pipe; 24c, bulk filter bridge system; 25a, bulk filter head flange; 25b, bulk filter tail flange; 26, pressure gauge connection pipe (A); 27, bulk filter drain pipe; 28, bulk filter elliptical head; 3, adsorption unit; 30, adsorption shell; 31, adsorbent; 32a, head filter element; 32a1, filter element frame; 32a2, filter element mesh; 32b, tail filter element; 33a, head partition; 33a1, partition frame; 33a2, partition hole; 33b, tail partition; 34a, adsorption head flange; 34b, adsorption tail flange; 35a, adsorption liquid inlet pipe; 35b, adsorption liquid outlet pipe; 36, liquid level control system; 36a, adsorption liquid level upper connection pipe; 36b, adsorption liquid level lower connection pipe; 36c, adsorption Liquid bridge system; 37a, pressure gauge connection (B); 37b, pressure gauge connection (C); 38a, adsorption drain pipe; 38b, exhaust pipe; 39a, manhole (A); 39b, manhole (B); 4, microfiltration unit; 40, microfiltration housing; 41, microfiltration inner part; 41a, outer surface of microfiltration inner part; 41b, inner surface of microfiltration inner part; 41c, top of microfiltration inner part; 41d, bottom of microfiltration inner part; 41e, top cover of microfiltration inner part; 41f, sealing gasket of microfiltration inner part; 42, microfiltration positive plate; 42a, outer ring of microfiltration positive plate frame; 42b, inner ring of microfiltration positive plate frame; 42c, spokes of microfiltration positive plate frame; 42d, small round holes of microfiltration positive plate; 42e, large fan holes of microfiltration positive plate; 43, microfiltration Auxiliary flower plate; 43a, microfiltration auxiliary flower plate frame; 43b, microfiltration auxiliary flower plate circular hole; 44, microfiltration liquid level system; 44a, microfiltration liquid level upper pipe; 44b, microfiltration liquid level lower pipe; 44c, microfiltration liquid bridge system; 45a, microfiltration head end flange; 45b, microfiltration tail end flange; 46, pressure gauge pipe (D); 47, microfiltration drain pipe; 48, microfiltration elliptical head; 5, product outlet pipe; 6, support; 61, bulk filter leg; 62, adsorption front leg; 63, adsorption rear leg; 64, microfiltration leg; d1, filter element outer diameter; d2, filter element sealing gasket outer diameter; d3, positive flower plate small circular hole inner diameter; d4, auxiliary flower plate circular hole inner diameter; D1, bulk filter housing inner diameter; D2, adsorption housing inner diameter; D3, microfiltration housing inner diameter. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0058] like Figure 1 As shown, the multi-in-one purification device for amines in the process of wet desulfurization, decarbonization and dehydration of gas in this embodiment includes auxiliary components such as a material inlet pipe 1, a bulk filter unit 2, an adsorption unit 3, a microfiltration unit 4, a product outlet pipe 5 and a support 6; the material inlet pipe 1 is connected to the head end of the bulk filter unit 2, and the tail end flange 25b of the bulk filter unit 2 is directly connected to the head end flange 34a of the adsorption unit 3, and the tail end flange 34b of the adsorption unit 3 is directly connected to the head end flange 45a of the microfiltration unit 4, and the product outlet pipe 5 is connected to the tail end of the microfiltration unit 4 to form an integrated device supported and fixed on the support 6.

[0059] like Figure 1-Figure 2 As shown, in this embodiment, the bulk filter unit 2 includes a bulk filter housing 20, a bulk filter internal 21, a bulk filter positive plate 22, a bulk filter auxiliary plate 23, a bulk filter liquid level system 24, a head end connecting flange 25a, a tail end connecting flange 25b, a bulk filter elliptical head 28 and auxiliary components; the bulk filter housing 20 is horizontally arranged, and the bulk filter auxiliary plate 23 is arranged on the radial cross section of the internal tail end, and the bulk filter auxiliary plate 23 is sealed and connected to the inner wall of the bulk filter housing 20 on all sides; and the bulk filter positive plate 22 is arranged on the head end of the bulk filter housing 20. In the cross section; the material inlet pipe 1 is connected to the outside of the bulk filter housing 20, and a pressure gauge connecting pipe (A) 26 is arranged on the outside of the material inlet pipe 1; the bulk filter elliptical head 28 is connected to the flange 25a at the first end of the bulk filter housing 20, and the bulk filter liquid level upper connecting pipe 24a and the bulk filter liquid level lower connecting pipe 24b are respectively arranged on the upper and lower sides of the bulk filter elliptical head 28, and a bulk filter liquid level upper connecting pipe 24a and a bulk filter liquid level lower connecting pipe 24b are arranged, and a bulk filter liquid bridge system 24c is arranged between the bulk filter liquid level upper connecting pipe 24a and the bulk filter liquid level lower connecting pipe 24b; a bulk filter sewage pipe 27 is also arranged on the lower side outside the bulk filter housing 20.

[0060] like Figure 3 As shown, in this embodiment, the bulk filter inner component 21 is a hollow cylindrical conventional filter element with an outer diameter d1, the outer surface 21a of the bulk filter inner component 21 is a large surface, and the inner surface 21b of the bulk filter inner component is a small surface; an elastic top cover 21e is installed at the top end 21c of the bulk filter inner component, and an elastic sealing gasket 21f with an outer diameter d2 is provided at the bottom end 21d of the bulk filter inner component.

[0061] like Figure 4As shown, in this embodiment, the bulk filter positive flower plate 22 is mainly composed of the bulk filter positive flower plate frame spokes 22c that firmly connect the bulk filter positive flower plate frame outer ring 22a and the bulk filter positive flower plate frame inner ring 22b, and the outer diameter of the bulk filter positive flower plate 22 is equal to the inner diameter D1 of the bulk filter housing 20; on the bulk filter positive flower plate frame spokes 22c and the bulk filter positive flower plate frame inner ring 22b, there are small circular holes 22d of the bulk filter positive flower plate, the number of which is the same as the number of the bulk filter internals 21 and the size of which is the inner diameter d3.

[0062] like Figure 5 As shown, in this embodiment, the bulk filter auxiliary flower plate 23 is a circular plate 23a whose outer diameter is the same as the inner diameter D1 of the bulk filter housing 20, and is provided with bulk filter auxiliary flower plate circular holes 23b of the same number as the bulk filter inner part 21 and of the inner diameter d4, and the centers of the bulk filter auxiliary flower plate circular holes 23b are aligned with the centers of the bulk filter main flower plate small circular holes 22d; wherein, the bulk filter inner part bottom end 21d penetrates into the bulk filter auxiliary flower plate circular holes 23b, and forms a seal with the bulk filter auxiliary flower plate 23 through the bulk filter inner part sealing gasket 21f, and the center of the bulk filter inner part top cover 21e is aligned and fixed with the center of the bulk filter main flower plate small circular holes 22d.

[0063] like Figure 1 and Figure 6As shown, in this embodiment, the adsorption unit 3 includes an adsorption shell 30, an adsorbent 31, a head end filter element 32a, a tail end filter element 32b, a head end baffle 33a, a tail end baffle 33b, an adsorption liquid inlet pipe 34a, an adsorption liquid outlet pipe 34b, an adsorption head end flange 35a, an adsorption head end flange 35b, an adsorption liquid level system 36 and various auxiliary components, and is directly connected to the bulk filter tail end flange 25b through the adsorption head end flange 35a; the adsorption shell 30 is a horizontal tank body, the head end flange 35a is a horizontal tank body, and the head end flange 35a is a horizontal tank body. The two ends of the tail are provided with curved end caps with adsorption head end flanges 35a and adsorption head end flanges 35b respectively; on the radial cross section inside the straight cylinder end of the adsorption shell 30 near the two heads, a head end baffle 33a and a tail end baffle 33b are arranged symmetrically in accordance with the vertical center line of the adsorption shell 30, and the circumferences of the head end baffle 33a and the tail end baffle 33b are both fitted and fixed to the inner wall of the adsorption shell 30; on the inner side of the head end baffle 33a and the tail end baffle 33b, a diameter of the same as the adsorption The housing 30 has a head end filter element 32a and a tail end filter element 32b with the same inner diameter D2, and the filter elements are arranged opposite to each other and fixed on the corresponding partitions; the space formed by the head end filter element 32a, the tail end filter element 32b and the inner wall of the adsorption housing 30 is filled with adsorbent 31; the adsorption unit 3 is directly connected to the bulk filter tail end flange 25b through the adsorption head end flange 35a; the adsorption liquid level upper pipe 36a and the adsorption liquid level lower pipe 36b are respectively provided on the upper and lower sides of the adsorption housing 30 An adsorption liquid bridge system 36c is installed; a pressure gauge connecting pipe (B) 37a and a pressure gauge connecting pipe (C) 37b are respectively arranged on the adsorption liquid inlet pipe 35a and the adsorption liquid outlet pipe 35b; an adsorption sewage discharge pipe 38a is arranged on the lower side of the adsorption shell 30, an exhaust pipe 38b is arranged on the upper side of the adsorption shell 30, and a manhole (A) 39a and a manhole (B) 39b are respectively arranged on the upper and lower sides of the adsorption shell 30. The adsorbent 31, i.e., activated carbon, has a particle equivalent diameter of not less than 3 mm.

[0064] like Figure 7 As shown, in this embodiment, the head end filter element 32a is a circular mesh felt made of a random wire mesh, including a filter element frame 32a1 and a filter element mesh 32a2. The head end filter element 32a and the tail end filter element 32b have the same structure and size.

[0065] like Figure 8 As shown, in this embodiment, the head end partition 33a is a circular plate with uniform openings, including a partition frame 33a1 and partition holes 33a2, and the head end partition 33a and the tail end partition 33b have exactly the same structural dimensions.

[0066] like Figure 1 and Fig. 9As shown, in this embodiment, the microfiltration unit 4 includes a microfiltration housing 40, a microfiltration internal part 41, a microfiltration positive plate 42, a microfiltration auxiliary plate 43, a head end connecting flange 45a, a tail end connecting flange 45b, a microfiltration elliptical head 48, a microfiltration level system 44 and various auxiliary components; the microfiltration housing 40 is horizontally arranged, and a microfiltration auxiliary plate 43 is arranged on the radial cross section of the tail end inside, and the microfiltration auxiliary plate 43 is sealed and connected to the inner wall of the microfiltration housing 40 on all sides; the microfiltration positive plate 42 is arranged on the radial cross section of the head end inside the microfiltration housing 40; the microfiltration head end flange 45a is directly connected to the adsorption tail end flange 35b; the product outlet pipe 5 is connected to the outside of the tail of the microfiltration shell 40, and a pressure gauge connecting pipe (D) 46 is arranged on the outside of the product outlet pipe 5; the tail end flange 45b of the microfiltration shell 40 is connected to the microfiltration elliptical head 48, and the microfiltration liquid level upper connecting pipe 44a and the microfiltration liquid level lower connecting pipe 44b are arranged on the upper and lower sides of the microfiltration elliptical head 48, and a microfiltration liquid bridge system 44c is arranged between the microfiltration liquid level upper connecting pipe 44a and the microfiltration liquid level lower connecting pipe 44b; a microfiltration sewage pipe 47 is also arranged on the lower side of the microfiltration shell 40.

[0067] like Figure 3 As shown, in this embodiment, the structure of the microfiltration inner component 41 is the same as that of the bulk filter inner component 21, and is also a hollow cylindrical conventional filter element with an outer diameter d1. The outer side 41a of the microfiltration inner component is a large surface, while the inner side 41b of the microfiltration inner component is a small surface. An elastic top cover 41e is installed at the top end 41c of the microfiltration inner component, and an elastic sealing gasket 41f with an outer diameter d2 is provided at the bottom end 41d of the microfiltration inner component.

[0068] like Figure 4 As shown, in this embodiment, the structure of the microfiltration positive flower plate 42 is the same as that of the bulk filter positive flower plate 22, and is mainly composed of the microfiltration positive flower plate frame spokes 42c that firmly connect the microfiltration positive flower plate frame outer ring 42a and the microfiltration positive flower plate frame inner ring 42b. The outer diameter of the microfiltration positive flower plate 42 is equal to the inner diameter D1 of the microfiltration housing 40; on the microfiltration positive flower plate frame spokes 42c and the microfiltration positive flower plate frame inner ring 42b, there are small microfiltration positive flower plate holes 42d of the same number as the microfiltration internals 41 and the size of the inner diameter d3.

[0069] like Figure 5 As shown, in this embodiment, the structure of the microfiltration auxiliary flower plate 43 is the same as that of the bulk filter auxiliary flower plate 23, and is a circular plate skeleton 43a whose outer diameter is the same as the inner diameter D1 of the microfiltration housing 40, and is provided with microfiltration auxiliary flower plate circular holes 43b of the same number as the microfiltration inner part 41 and of the same size as the inner diameter d4, and the center of the microfiltration auxiliary flower plate circular hole 43b is aligned with the center of the microfiltration main flower plate small circular hole 42d.

[0070] Among them, the bottom end 41d of the microfiltration inner component penetrates into the circular hole 43b of the microfiltration auxiliary flower plate, and forms a seal with the microfiltration auxiliary flower plate 43 through the microfiltration inner component sealing gasket 41f, and the center of the microfiltration inner component top cover 41e is aligned and fixed with the center of the small circular hole 42d of the microfiltration main flower plate; the bulk filter unit 2 is fixed on the support 6 through the corresponding bulk filter support legs 61, the adsorption unit 3 is fixed through the corresponding front adsorption support legs 62 and rear adsorption support legs 63, and the microfiltration unit 4 is fixed through the corresponding microfiltration support legs 64 to form flanges that are directly connected in sequence and integrated into an integrated device.

[0071] The specific implementation process of this embodiment is as follows: during the multi-element purification of amines in the process of wet flue gas desulfurization, decarbonization and dehydration, the small-sized gel and solid impurities carried by the material are first removed with the help of the bulk filtration unit 2, and the liquid-liquid dispersion is performed, so as to create the prerequisite for the efficient and stable operation of the subsequent adsorption unit 3. Then, the adsorption unit 3 adsorbs and removes other liquid components with large solubility parameters different from those of the mainstream liquid, purifies the mainstream liquid, and then the microfiltration unit 4 deeply removes the dispersed phase of fine-sized particles escaping from the adsorption unit 3 to ensure the quality of the product liquid, thereby realizing the multi-element integrated purification of amines in the process of wet flue gas desulfurization, decarbonization and dehydration.

[0072] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-in-one purification device for alcohol amines in the process of wet desulfurization, decarbonization and dehydration of gas, characterized by: The invention comprises three core units, namely, a bulk filtration unit (2), an adsorption unit (3), and a microfiltration unit (4), which are arranged horizontally in sequence, and are directly connected head and tail by flanges without any external connection pipelines and integrated and fixed on a support (6) to form a multi-integrated compact device; wherein the material inlet pipe (1) is connected to the head end of the bulk filtration unit (2), and the product outlet pipe (5) is connected to the tail end of the microfiltration unit (4).

2. The multi-in-one purification device for alcohol amines in the process of wet desulfurization, decarbonization and dehydration of gas according to claim 1 is characterized in that: The bulk filter unit (2) is horizontally arranged at the starting unit of the device, and comprises a bulk filter housing (20), a bulk filter internal component (21), a bulk filter main plate (22), a bulk filter auxiliary plate (23), a bulk filter liquid level system (24), bulk filter head and tail connection flanges (25) and auxiliary components; the bulk filter housing (20) is provided with the bulk filter auxiliary plate (23) on the radial cross section at the rear end of the interior thereof, and the surrounding of the bulk filter auxiliary plate (23) is connected to the interior of the bulk filter housing (20). The bulk filter housing (20) is sealed with a wall; the bottom end (21d) of the bulk filter inner component penetrates into the circular hole (23b) of the bulk filter auxiliary flower plate and forms a seal with the bulk filter auxiliary flower plate (23) through the bulk filter inner component sealing gasket (21f); the bulk filter positive flower plate (22) is arranged in the radial cross section of the bulk filter housing (20) at the position of the bulk filter inner component top cover (21e), and the bulk filter inner component (21) is fixed by aligning the center of the small circular hole (22d) of the bulk filter positive flower plate with the center of the bulk filter inner component top cover (21e).

3. The multi-in-one purification device for alcohol amines in the process of wet desulfurization, decarbonization and dehydration of gas according to claim 2 is characterized in that: The order of the outer diameter (d1) of the bulk filter inner part, the outer diameter (d2) of the bulk filter inner part sealing gasket, the inner diameter (d3) of the small circular hole of the bulk filter main flower plate, and the inner diameter (d4) of the circular hole of the bulk filter auxiliary flower plate is: d3 <d1<d4<d2。 4. The multi-in-one purification device for alcohol amines in the process of wet desulfurization, decarbonization and dehydration of gas according to claim 1 is characterized in that: The adsorption unit (3) is arranged horizontally and immediately at the tail end of the bulk filter unit (2), and comprises an adsorption shell (30), an adsorbent (31), a head end filter element (32a), a tail end filter element (32b), a head end baffle (33a), a tail end baffle (33b), an adsorption liquid inlet pipe (34a), an adsorption liquid outlet pipe (34b), an adsorption head end flange (35a), an adsorption tail end flange (35b), an adsorption liquid level system (36) and various auxiliary components; the adsorption shell (30) is a horizontal cylinder, and the head end baffle (33a) and the tail end baffle (33b) are arranged on the radial cross section inside the straight cylinder end of the adsorption shell (30) in a manner symmetrical to the vertical center line of the adsorption shell (30), and the head end baffle (33a) The circumference of the front and rear end partitions (33b) are both fitted and fixed to the inner wall of the adsorption shell (30); a front end filter element (32a) and a rear end filter element (32b) having a diameter equal to the inner diameter (D2) of the adsorption shell are arranged on the inner side of the front end partition (33a) and the rear end partition (33b), and the filter elements are arranged opposite to each other and fixed on the respective corresponding partitions; the space formed by the front end filter element (32a), the rear end filter element (32b) and the inner wall of the adsorption shell (30) is filled with adsorbent (31); the front end filter element (32a) and the rear end filter element (32b) have completely the same structural dimensions and are made of a circular mesh felt made of a loose wire mesh, with a mesh equivalent diameter of not more than 1.5 mm and a porosity of not less than 70%.

5. The multi-in-one purification device for alcohol amines in the process of wet desulfurization, decarbonization and dehydration of gas according to claim 1, characterized in that: The microfiltration unit (4) is arranged horizontally and immediately at the rear end of the adsorption unit (3), and comprises a microfiltration housing (40), microfiltration internals (41), a microfiltration front plate (42), a microfiltration secondary plate (43), a microfiltration liquid level system (44), microfiltration front and rear end connecting flanges (45), and auxiliary components.

6. The multi-in-one purification device for alcohol amines in the process of wet desulfurization, decarbonization and dehydration of gas according to claim 5, characterized in that: The microfiltration housing (40) is provided with the microfiltration auxiliary flower plate (43) on the radial cross section at the rear end thereof, and the microfiltration auxiliary flower plate (43) is sealed to the inner wall of the microfiltration housing (40) on all sides; the bottom end (41d) of the microfiltration inner part penetrates into the circular hole (43b) of the microfiltration auxiliary flower plate and forms a seal with the microfiltration auxiliary flower plate (43) through the microfiltration inner part sealing gasket (41f), and the microfiltration positive flower plate (42) is provided on the radial cross section of the microfiltration housing (40) at the position of the microfiltration inner part top cover (41e), and the microfiltration inner part (41) is fixed by aligning the center of the small circular hole (42d) of the microfiltration positive flower plate with the center of the microfiltration inner part top cover (41e).

7. The multi-in-one purification device for alcohol amines in the process of wet desulfurization, decarbonization and dehydration of gas according to claim 6, characterized in that: The order of the outer diameter (d1) of the microfiltration inner part, the outer diameter (d2) of the microfiltration inner part sealing gasket, the inner diameter (d3) of the small circular hole of the microfiltration positive flower plate, and the inner diameter (d4) of the circular hole of the microfiltration secondary flower plate is: <d1<d4<d2。

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