Special resin bed for amine liquid purification
By introducing a water distributor structure, including a filter layer, an ion exchange resin layer, and a spray layer, into the amine liquid purification equipment, the problem of combining physical filtration and chemical adsorption in traditional equipment is solved, achieving highly efficient purification of amine liquid and improving purification efficiency and effect.
Patent Information
- Application Number
- CN202520128331.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Traditional amine purification equipment relies solely on the ion exchange resin layer for simple adsorption, without pre-filtering impurities in the amine solution, resulting in poor purification effect and low purification efficiency.
The device employs a water distributor structure, which includes a filter layer, an ion exchange resin layer, a resin regeneration layer, and a spray layer. The filter layer performs physical filtration, the ion exchange resin layer performs adsorption purification, the spray layer sprays the purified amine solution, the circulation pump repeatedly circulates and purifies the solution, and the replenishment port restores the resin's adsorption capacity.
It improves the purification efficiency and effectiveness of amine solution, ensures high-efficiency purification of amine solution, prevents impurities from adhering, and enhances the ease of operation and energy efficiency of the purification tank.
Smart Images
Figure CN223747597U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to amine liquid purification equipment technical field, specifically related to a resin bed special for amine liquid purification. BACKGROUND
[0002] In petroleum chemical refinery, sulfur recovery process, amine liquid is often used to absorb hydrogen sulfide and carbon dioxide and other acid gases. In the amine liquid system of refinery, the amine liquid is used in the process of continuous circulation, and solid suspended matter and heat stable salt and other impurities will inevitably be produced and accumulated, which makes the quality of amine liquid deteriorate, corrodes the circulation system, causes the desulfurization system to be unstable, and causes problems such as pipeline blockage and amine liquid foaming, which seriously affects the absorption performance of the solvent. Therefore, keeping the solvent clean can greatly improve the efficiency of desulfurization and decarburization, and also enables the desulfurization device to operate normally and stably. At present, in the field of amine liquid purification, the most important way is still to use a shallow bed ion exchange equipment plus a three-stage filtering device to remove heat stable salt, solid particles and oil and other impurities in the refinery amine liquid, so as to achieve the purpose of purifying amine liquid and keep the stable operation of the process device on site.
[0003] In the ion exchange equipment, the regenerated resin bed is the core component. The resin in the resin bed is used to adsorb various anions and cations in the feed liquid that need to be removed. In order to improve the effective use rate of the resin in the resin bed, a water distributor that can uniformly distribute the fluid and effectively prevent resin from escaping is often needed.
[0004] The traditional amine liquid purification resin bed only relies on the ion exchange resin layer for simple adsorption and purification, and does not pre-physically filter the impurities in the amine liquid, or does not completely remove the suspended matter or organic matter in the amine liquid before entering the resin bed, which will cause part of the residual suspended matter impurities to directly adhere to the resin bed, resulting in poor purification effect of the amine liquid. In addition, the impurities in the amine liquid are easily embedded or adhered to the amine liquid purification resin bed, and with the accumulation and blockage of the impurities, the purification efficiency of the amine liquid purification resin bed is greatly reduced. UTILITY MODEL CONTENTS
[0005] Therefore, the utility model provides a resin bed special for amine liquid purification, which can realize efficient purification of the amine liquid to be purified through the water distributor, and solve the problem of poor purification effect and low purification efficiency of the traditional amine liquid purification resin bed which only relies on the ion exchange resin layer for simple adsorption and purification and does not pre-physically filter the impurities in the amine liquid.
[0006] To solve the above technical problems, the utility model provides a kind of resin bed special for amine liquid purification, resin bed is arranged in purification tank, and purification tank includes tank body and the end cap being arranged on tank body, and end cap and tank body are detachably arranged together, the inside of purification tank is provided with water distributor, and water distributor is detachably arranged on end cap, and water distributor includes filter layer, ion exchange resin layer, resin regeneration layer and spray layer sequentially arranged from top to bottom, filter layer is the structure of at least three layers of filter screen stack, ion exchange resin layer is supported by high polymer material with ion exchange function, such as resin, including high polymer skeleton, ion exchange group and pore, wherein high polymer skeleton is used to support ion exchange resin;Ion exchange group is arranged on high polymer skeleton, with exchangeable ion (referred to as counter ion) or polar nonionic functional group, which can dissociate in aqueous solution and exchange reaction with the same sex ion in surrounding solution;Pore includes gel hole (exists in dry state and wet state resin) and capillary hole (the gap between high polymer structure).These pores provide necessary channels for ion exchange process, so that the ions in solution can diffuse smoothly into the resin interior and react with exchange group, filter layer is communicated with the liquid inlet of purification tank, and the bottom of purification tank is provided with circulating pump, the water inlet of circulating pump is communicated with the bottom side wall of purification tank, and the outlet of circulating pump is communicated with the top of purification tank, the utility model can be carried out efficient physical filtration and adsorption purification operation to the amine liquid to be purified by the water distributor arranged in purifier, solve the problem that traditional amine liquid purification resin bed only relies on ion exchange resin layer to carry out simple adsorption purification, without pre-physical filtration of impurities in amine liquid, leading to poor purification effect of amine liquid, and the purification efficiency of amine liquid purification resin bed is low, greatly improve the purification efficiency and effect of amine liquid.
[0007] Ion exchange resin layer includes cation exchange resin and anion exchange resin, wherein cation exchange resin can adsorb cations in amine liquid, such as calcium, magnesium and the like, and anion exchange resin can adsorb anions in amine liquid, such as sulfate, nitrate, nitrite and the like.
[0008] End cap and tank body are detachably arranged together, and positioning pin is arranged on the top of purification tank, and the upper portion of tank body is provided with pin hole matched with positioning pin.
[0009] The tank body of purification tank is provided with liquid supplementing port, and the liquid supplementing port is located at the same height with resin regeneration layer, and the liquid inlet is arranged on the end cap.
[0010] Liquid supplementing port is communicated with the outlet of alkali storage tank through communication pipeline.
[0011] Compared with the prior art, the present application has at least one of the following beneficial technical effects:
[0012] 1. The utility model can realize the filtration of the impurities in the amine liquid to be purified through the filter layer in the water distributor, the adsorption treatment of the cations and anions in the amine liquid through the ion exchange resin layer, the spraying of the purified amine liquid to the bottom of the reaction tank through the spraying layer, and the collection of the amine liquid, thereby greatly improving the purification efficiency of the amine liquid.
[0013] 2. The utility model can repeatedly circulate the filtered and purified amine liquid at the bottom of the purification tank into the water distributor through the circulating pump, repeatedly purify the amine liquid through the water distributor, further improve the purification effect and efficiency of the amine liquid, and save energy more conveniently.
[0014] 3. The utility model can realize the supplement of the alkali into the resin regeneration layer through the liquid supplementing port, so that the resin restores the adsorption capacity. DRAWINGS
[0015] Figure 1 It is a structural schematic view of the resin bed special for amine liquid purification of the utility model.
[0016] Figure 2 It is a front view of the resin bed special for amine liquid purification of the utility model.
[0017] Figure 3 It is a structural schematic view of the resin bed special for amine liquid purification of the utility model. Figure 2 It is a sectional view of A-A in the utility model.
[0018] Figure 4 It is an enlarged view of B in the utility model. Figure 3
[0019] The reference signs are as follows: 100, purification tank; 110, tank body; 111, pin hole; 120, end cover; 121, positioning pin; 122, liquid inlet; 200, water distributor; 210, filter layer; 220, ion exchange resin layer; 221, cation exchange resin; 222, anion exchange resin; 230, resin regeneration layer; 240, spraying layer; 300, circulating pump; 400, liquid supplementing port; 500, communication pipeline. DETAILED DESCRIPTION
[0020] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the drawings of the embodiments of the utility model to make a clear and complete description of the technical scheme of the embodiments of the utility model. Figures 1-4 It is obvious that the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.
[0021] As Figure 1 and Figure 3 As shown: the embodiment provides a kind of special resin bed for amine liquid purification, resin bed is arranged in purification tank 100, purification tank 100 includes tank body 110 and the end cap 120 of being set on tank body 110, end cap 120 is detachably arranged together with tank body 110, the inside of purification tank 100 is provided with water distributor 200, water distributor 200 is detachably arranged on end cap 120, water distributor 200 includes filter layer 210, ion exchange resin layer 220, resin regeneration layer 230, spray layer 240 sequentially arranged from top to bottom, filter layer 210 is the structure of at least three layers of filter screen stack, ion exchange resin layer 220 is supported using high molecular material with ion exchange function, for example, resin, including high molecular backbone, ion exchange group and pore, wherein high molecular backbone is used to support ion exchange resin;Ion exchange group is arranged on high molecular backbone, with exchangeable ion (referred to as counter ion) or polar nonionic functional group, which can be dissociated in aqueous solution, and exchange reaction with the same sex ion in surrounding solution;Pore includes gel hole (exists in dry and wet resin) and capillary hole (the gap between high molecular structure).These pores provide necessary channels for ion exchange process, so that the ions in solution can diffuse smoothly into the resin, and react with exchange group, filter layer 210 is connected with the liquid inlet 122 of purification tank 100, the utility model can be realized by the water distributor 200 arranged in purifier The operation of high-efficiency physical filtration and adsorption purification to the amine liquid to be purified, solve the problem that the traditional amine liquid purification bed only relies on ion exchange resin layer 220 to carry out simple adsorption purification, without pre-physical filtration of impurities in amine liquid, leading to poor purification effect of amine liquid, the purification efficiency of amine liquid purification bed is low, greatly improve the purification efficiency and effect of amine liquid.
[0022] According to one embodiment of the utility model, Figure 2 And Figure 4 As shown, ion exchange resin layer 220 includes cation exchange resin 221 and anion exchange resin 222, wherein, cation exchange resin 221 can adsorb cation in amine liquid, such as calcium, magnesium, etc., anion exchange resin 222 can adsorb anion in amine liquid, such as sulfate, nitrate, nitrite, etc., the utility model can be realized by ion resin layer The quick and efficient complete adsorption operation of anion and cation in amine liquid, greatly improve the purity of amine liquid.
[0023] According to another embodiment of the utility model, Figure 1 And Figure 2As shown, the bottom of the purification tank 100 is provided with a circulating pump 300, the water inlet of the circulating pump 300 is communicated with the bottom side wall of the purification tank 100, and the outlet of the circulating pump 300 is communicated with the top of the purification tank 100, the filtered and purified amine liquid at the bottom of the purification tank 100 can be repeatedly circulated and introduced into the water distributor 200 through the circulating pump 300, the amine liquid is repeatedly purified through the water distributor 200, and the effect and efficiency of amine purification are further improved, and energy saving is more convenient.
[0024] According to another embodiment of the utility model, as shown in Figure 1 and Figure 4 As shown, the end cover 120 and the tank body 110 are detachably arranged together, the top of the purification tank 100 is provided with a positioning pin 121, and the upper portion of the tank body 110 is provided with a pin hole 111 matched with the positioning pin 121, the end cover 120 and the water distributor 200 below the end cover 120 can be integrally taken out for replacement or cleaning operation through the detachable arrangement of the end cover 120 and the tank body 110, and the efficiency of maintenance and replacement of the water distributor 200 is greatly improved, and the operation is more convenient.
[0025] According to another embodiment of the utility model, as shown in Figure 1 and Figure 2 As shown, the tank body 110 of the purification tank 100 is provided with a liquid supplementing port 400, the liquid supplementing port 400 is located at the same height as the resin regeneration layer 230, and the liquid inlet 122 is arranged on the end cover 120, the liquid supplementing port 400 can be used to supplement the alkali liquid into the resin regeneration layer 230, so that the resin restores the adsorption capacity.
[0026] The liquid supplementing port 400 is communicated with the outlet of the alkali liquid storage tank through the communication pipeline 500, the alkali liquid storage tank is used for storing the alkali liquid, and the alkali liquid can be supplemented into the liquid supplementing port 400 through the communication pipeline 500 to restore the resin adsorption capacity of the resin regeneration layer 230, and the operation is more convenient.
[0027] The use method of the utility model:
[0028] Firstly, it needs to be clear that the resin bed related to the utility model is mainly used for physical filtration and chemical adsorption purification operation of amine liquid, and the utility model takes the purification of amine liquid as an example to elaborate its use method in detail, when the amine liquid needs to be purified, firstly, the amine liquid is introduced into the filter layer 210 of the water distributor 200 through the liquid inlet 122, the filter layer 210 of the water distributor 200 can block and isolate the suspended particles and impurities in the amine liquid, the filtered amine liquid can enter the ion exchange resin layer 220 to carry out chemical adsorption operation, wherein, the cation exchange resin 221 can adsorb the cations in the amine liquid, such as calcium, magnesium and the like, the anion exchange resin 222 can adsorb the anions in the amine liquid, such as sulfate, nitrate, nitrite and the like, the adsorbed amine liquid can enter the resin regeneration layer 230, and then is dropped to the bottom of the reaction tank through the spraying layer 240, at this time, the circulating pump 300 is started to re-introduce the purified amine liquid at the bottom of the reaction tank into the water distributor 200 at the top of the purification tank 100 to carry out secondary or repeated purification operation, and finally the complete purification treatment of the amine liquid is realized, the utility model can realize the efficient physical filtration and adsorption purification operation of the amine liquid to be purified through the water distributor 200 arranged in the purifier, solve the problem that the traditional amine liquid purification bed only relies on the ion exchange resin layer 220 to carry out simple adsorption purification, and the impurities in the amine liquid are not pre-physically filtered, resulting in poor purification effect of the amine liquid and low purification efficiency of the amine liquid purification bed, greatly improve the purification efficiency and effect of the amine liquid.
[0029] In addition, it also needs to be pointed out that, in the description of the utility model, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements.
[0030] The above is the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.
Claims
1. A resin bed specifically for amine purification, wherein the resin bed is disposed within a purification tank (100), characterized in that: The purification tank (100) includes a tank body (110) and an end cap (120) disposed on the tank body (110). The purification tank (100) is provided with a water distributor (200). The water distributor (200) includes a filter layer (210), an ion exchange resin layer (220), a resin regeneration layer (230), and a spray layer (240) arranged sequentially from top to bottom. The filter layer (210) is connected to the liquid inlet (122) of the purification tank (100).
2. The resin bed for amine purification as described in claim 1, characterized in that: The ion exchange resin layer (220) includes a cation exchange resin (221) and an anion exchange resin (222), wherein the cation exchange resin (221) can adsorb cations in the amine solution, and the anion exchange resin (222) can adsorb anions in the amine solution.
3. The resin bed for amine purification as described in claim 2, characterized in that: A circulation pump (300) is provided at the bottom of the purification tank (100). The inlet of the circulation pump (300) is connected to the bottom side wall of the purification tank (100), and the outlet of the circulation pump (300) is connected to the top of the purification tank (100).
4. The resin bed for amine purification as described in claim 3, characterized in that: The end cap (120) is detachably mounted together with the tank body (110). The top of the purification tank (100) is provided with a positioning pin (121), and the upper part of the tank body (110) is provided with a pin hole (111) that matches the positioning pin (121).
5. The resin bed for amine purification as described in claim 4, characterized in that: The purification tank (100) has a liquid inlet (400) on its tank body (110). The liquid inlet (400) is at the same height as the resin regeneration layer (230), and the liquid inlet (122) is opened on the end cap (120).
6. The resin bed for amine purification as described in claim 5, characterized in that: The replenishment port (400) is connected to the outlet of the alkali storage tank via a connecting pipe (500).