CN216711797U - System for purifying salinized organic amine by using anion exchange resin - Google Patents
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Abstract
The utility model provides a system for purifying salinized organic amine by using anion exchange resin, which comprises an amine liquid filter, an exchange resin filter, a desalted water filter and an alkali liquor filter, wherein the amine liquid filter is communicated with the salinized amine liquid and the exchange resin filter, the exchange resin filter is communicated with a regenerated amine liquid discharge pipe, the bottom of the regenerated amine liquid discharge pipe is respectively communicated with a waste amine liquid discharge pipe, a waste alkali liquor discharge pipe and a waste water discharge pipe, and the desalted water filter and the alkali liquor filter are respectively communicated with the exchange resin filter through pipelines.The system for purifying salinized organic amine by using the anion exchange resin provided by the utility model can be used for adsorbing and purifying salinized amine liquid by using the anion exchange resin, so that the salinized organic amine is prevented from adsorbing and purifying CO2The adsorption effect is reduced, the salinization of organic amine is reduced, the loss of organic amine is reduced, the tail gas treatment effect is ensured, the corrosion to equipment is reduced, and meanwhile, the anion exchange resin after saturated adsorption is washed and regenerated by desalted water and alkali liquor, so that the circulating operation is realized.
Description
Technical Field
The utility model belongs to the technical field of amine liquid purification, and particularly relates to a system for purifying salinized organic amine by using anion exchange resin.
Background
CO2Emission reduction becomes the key point of research in the international energy field, the global cooperative pace which corresponds to climate change together is gradually accelerated along with the more serious global climate change problem, and in recent years, along with the rapid increase of economy, CO (carbon monoxide)2The discharge amount is maintained as fast as possible.
Use of organic amines for removing CO from flue gases2Is widely used at present, but the tail gas contains lessAmount of SO3Organic amine and SO3Heat stable salts will form. Heat stable salts in CO2The accumulation in the trapping process can accelerate the corrosion of the device, influence the long-period operation of the device and shorten the service life of the equipment. In addition, the formed salinized organic amine is difficult to regenerate and can reduce the absorption of CO by the organic amine2And the capability of the tail gas is influenced, so that the standard emission of the tail gas is influenced.
At present, the existing amine liquid purification device and method have some defects. The patent No. 200420051767.9 discloses a gas desulfurization device, which can purify and regenerate the desulfurized amine liquid to realize the recycling of N-methyldiethanolamine, but takes the regeneration problem of the purification device into consideration, and the treatment cost is relatively high.
Patent No. cn201310688813.x discloses an amine liquid purification mode, but the device has the problems of incomplete flushing and large consumption.
Patent publication No. CN205019965U discloses a regeneration method using an inert gas, but the regeneration effect is not good.
Patent publication No. CN203866136U discloses a purification method of amine liquid, but the apparatus does not consider separate recovery of waste water and waste liquid.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention aims to provide a system for purifying salinized organic amine with anion exchange resin, so as to overcome the salinization problem of organic amine in the prior art, realize the recycling of amine liquid, and reduce the operation cost.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
a system for purifying salinized organic amine by anion exchange resin comprises an amine liquid filter, an exchange resin filter, a desalted water filter and an alkali liquid filter,
the liquid inlet of the amine liquid filter is communicated with the salinized amine liquid through a pipeline, the discharge port of the amine liquid filter is communicated with the side wall of the exchange resin filter through a pipeline, anion exchange resin is filled in the exchange resin filter, the salinized amine liquid flows into the exchange resin filter after being preliminarily filtered through the amine liquid filter, generated regenerated amine liquid is discharged from the top of the exchange resin filter after being adsorbed and purified by the exchange resin filter,
a regenerated amine liquid discharge pipe for discharging regenerated amine liquid is communicated with a liquid outlet at the top of the exchange resin filter, a liquid outlet at the bottom is respectively communicated with a waste amine liquid discharge pipe, a waste alkali liquid discharge pipe and a waste water discharge pipe through pipelines, the waste amine liquid discharge pipe, the waste alkali liquid discharge pipe and the waste water discharge pipe are respectively used for discharging waste liquid generated in the regeneration process of anion exchange resin,
the liquid inlet of the desalted water filter is communicated with desalted water through a pipeline, the liquid inlet of the alkali liquor filter is communicated with the alkali liquor through a pipeline, the liquid outlets of the desalted water filter and the alkali liquor filter are respectively communicated with the liquid inlet at the top of the exchange resin filter through pipelines, desalted water or alkali liquor flows into the exchange resin filter from the top of the exchange resin filter after being filtered by the desalted water filter or the alkali liquor filter to wash or regenerate anion exchange resin, and the generated waste liquid is discharged from the bottom of the exchange resin filter.
The system for purifying a salified organic amine with an anion exchange resin according to the utility model operates as follows:
(a) the salinized amine liquid is filtered by an amine liquid filter and then enters an exchange resin filter, anion exchange resin in the exchange resin filter adsorbs the salinized amine liquid to purify organic amine, and the purified organic amine is discharged from a regenerated amine liquid discharge pipe at the top of the exchange resin filter;
(b) washing the anion exchange resin which is adsorbed and saturated with desalted water, and washing the residual amine solution on the anion exchange resin;
(c) after the anion exchange resin is adsorbed and saturated, washing the anion exchange resin by using alkali liquor to regenerate the anion exchange resin so as to recover the adsorption capacity;
(d) washing the regenerated anion exchange resin with desalted water to wash the residual alkali liquor of the anion exchange resin;
(e) and repeating the steps a, b, c and d.
Furthermore, a first conductivity analyzer is arranged on a pipeline between the amine liquid filter and the exchange resin filter, a second conductivity analyzer is arranged on a pipeline between the exchange resin filter and the regenerated amine liquid discharge pipe, the conductivity of the salinized amine liquid before purification is monitored through the first conductivity analyzer, the conductivity of the purified organic amine is monitored through the second conductivity analyzer, and the purification effect of the anion exchange resin can be judged by comparing the change of the conductivity before and after purification, so that whether the anion exchange resin is saturated or not is judged.
Further, a pressure monitoring pipeline is communicated between the pipeline between the first conductivity analyzer and the exchange resin filter and the pipeline between the second conductivity analyzer and the regenerated amine liquid discharge pipe, a differential pressure gauge is arranged on the pressure monitoring pipeline, the pressure difference between the front side and the rear side of the anion exchange resin purification can be monitored through the differential pressure gauge, when the anion exchange resin is adsorbed and saturated, the permeability of the anion exchange resin is reduced, the pressure difference is increased, and an operator can know the state of the anion exchange resin through the numerical value of the differential pressure gauge, so that the anion exchange resin is regenerated or replaced in time.
Furthermore, a regeneration flowmeter is arranged on the regeneration amine liquid discharge pipe and used for counting the flow of discharged regeneration amine liquid.
Furthermore, the pipelines between the exchange resin filter and the waste amine liquid discharge pipe, the waste alkali liquid discharge pipe and the waste water discharge pipe are communicated with a waste liquid flow meter for counting the discharge amount of the waste amine liquid, the waste alkali liquid and the waste water.
Furthermore, the exchange resin filters are connected in parallel to form at least two amine liquid filters, desalted water filters and alkali liquid filters, the amine liquid filters, the desalted water filters and the alkali liquid filters are respectively communicated with the two exchange resin filters through two pipelines, each pipeline is provided with an electromagnetic valve, the communication state of the amine liquid filters, the desalted water filters and the alkali liquid filters can be controlled through the electromagnetic valves, after the anion exchange resin in one exchange resin filter is saturated in adsorption, the salted amine liquid can not flow into the exchange resin filter any more through controlling the electromagnetic valves, the desalted water and the alkali liquid are communicated with the exchange resin filters to wash and regenerate the anion exchange resin saturated in adsorption, and meanwhile, the electricity is controlledThe magnetic valve makes the salinized amine liquid flow into the exchange resin filter which is not adsorbed and saturated by the anion exchange resin, the continuous operation is realized, the shutdown is not needed, the purification efficiency is improved, and the tail gas treatment for removing CO is ensured2The effect of (1).
Compared with the prior art, the system for purifying salinized organic amine by using anion exchange resin has the following advantages:
(1) the system for purifying salinized organic amine by using the anion exchange resin provided by the utility model can be used for adsorbing and purifying salinized amine liquid by using the anion exchange resin, so that the salinized organic amine is prevented from adsorbing and purifying CO2The adsorption effect is reduced, the salinization of organic amine is reduced, the loss of organic amine is reduced, the tail gas treatment effect is ensured, the corrosion to equipment is reduced, and the anion exchange resin after saturated adsorption is washed and regenerated by desalted water and alkali liquor to realize the circulating operation;
(2) the system for purifying salinized organic amine by using anion exchange resin monitors the adsorption state of the anion exchange resin in the exchange resin filters through the conductivity analyzer and the differential pressure gauge, and switches among a plurality of exchange resin filters in time, so that the anion exchange resin with saturated adsorption is regenerated while the salinized amine liquid is purified, and continuous cycle operation is realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic diagram of the linkage of a system for purifying a salinated organic amine with an anion exchange resin according to an embodiment of the present invention.
Description of the reference numerals:
1. an amine liquid filter; 2. an exchange resin filter; 3. a desalted water filter; 4. an alkali liquor filter; 5. a regenerated amine liquid discharge pipe; 6. a waste amine liquid discharge pipe; 7. a waste alkali liquor discharge pipe; 8. a waste water discharge pipe; 9. a first conductivity analyzer; 10. a second conductivity analyzer; 11. a pressure monitoring conduit; 12. a differential pressure gauge; 13. a regenerative flow meter; 14. a waste liquid flow meter.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
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 by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The system for purifying salinized organic amine by using anion exchange resin comprises an amine liquid filter 1, an exchange resin filter 2, a desalted water filter 3 and an alkali liquor filter 4,
the liquid inlet of the amine liquid filter 1 is communicated with the salinized amine liquid through a pipeline, the discharge port is communicated with the side wall of the exchange resin filter 2 through a pipeline, the exchange resin filter 2 is filled with anion exchange resin,
a regenerated amine liquid discharge pipe 5 for discharging regenerated amine liquid is communicated with a liquid outlet at the top of the exchange resin filter 2, a liquid outlet at the bottom is respectively communicated with a waste amine liquid discharge pipe 6, a waste alkali liquid discharge pipe 7 and a waste water discharge pipe 8 through pipelines,
the liquid inlet of the desalted water filter 3 is communicated with desalted water through a pipeline, the liquid inlet of the alkali liquor filter 4 is communicated with the alkali liquor through a pipeline, and the liquid outlets of the desalted water filter 3 and the alkali liquor filter 4 are respectively communicated with the top liquid inlet of the exchange resin filter 2 through pipelines.
A first conductivity analyzer 9 is arranged on a pipeline between the amine liquid filter 1 and the exchange resin filter 2, and a second conductivity analyzer 10 is arranged on a pipeline between the exchange resin filter 2 and the regenerated amine liquid discharge pipe 5.
A pressure monitoring pipeline 11 is communicated between a pipeline between the first conductivity analyzer 9 and the exchange resin filter 2 and a pipeline between the second conductivity analyzer 10 and the regenerated amine liquid discharge pipe 5, and a differential pressure gauge 12 is arranged on the pressure monitoring pipeline 11.
The regenerated amine liquid discharge pipe 5 is provided with a regenerated flow meter 13, and the pipelines between the exchange resin filter 2 and the waste amine liquid discharge pipe 6, the waste alkali liquid discharge pipe 7 and the waste water discharge pipe 8 are communicated with a waste liquid flow meter 14.
At least two exchange resin filters 2 are arranged in parallel, the amine liquid filter 1, the desalted water filter 3 and the alkali liquor filter 4 are respectively communicated with the two exchange resin filters 2 through two pipelines, each pipeline is provided with an electromagnetic valve, the communication state with the two exchange resin filters 2 can be controlled by the electromagnetic valve, when the anion exchange resin in one of the exchange resin filters 2 is saturated by adsorption, the salinized amine liquid can not flow into the exchange resin filter 2 any more by controlling the electromagnetic valve, the desalted water and the alkali liquor are communicated with the exchange resin filter 2 to flush and regenerate the anion exchange resin which is saturated in adsorption, meanwhile, the electromagnetic valve is controlled to enable the salinized amine liquid to flow into the exchange resin filter 2 which is not adsorbed and saturated by the anion exchange resin, so that continuous operation is realized, the shutdown is not needed, the purification efficiency is improved, and the effect of removing CO2 in tail gas treatment is ensured.
Example 1
The salinized amine solution comprises AMP (mol%): 30, SO 3: 1, H2O: 69. the flow rate is 2m3/h, the operation temperature is 30 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 10.5ms/cm at the moment, then the mixture enters macroporous ion exchange resin D301, the salinized ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 10ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured by a regenerative flowmeter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste liquid flow meter is used for measuring the flow and then is sent to a waste amine liquid discharge pipe. The anion exchange resin is washed with an alkali solution (20 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and restore the adsorption capacity, and the washing solution is sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
Example 2
The salinized amine solution comprises AMP (mol%): 30, SO 3: 1, H2O: 69. the flow rate is 2m3/h, the operation temperature is 40 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 11.2ms/cm at the moment, then the mixture enters macroporous ion exchange resin D301, the salinized ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 10.3ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured through a regenerative flow meter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste amine liquid is sent to a waste amine liquid discharge pipe after the flow is measured by a waste liquid flowmeter. The anion exchange resin is washed with an alkali solution (20 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and restore the adsorption capacity, and the washing solution is sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
Example 3
The salinized amine liquid comprises AMP (mol%): 30, SO 3: 1, H2O: 69. the flow rate is 2m3/h, the operation temperature is 30 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 10.5ms/cm at the moment, then the mixture enters an ion exchange resin D201, the salinized ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 9.8ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured through a regenerative flow meter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste amine liquid is sent to a waste amine liquid discharge pipe after the flow is measured by a waste liquid flowmeter. The anion exchange resin is washed with an alkali solution (20 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and restore the adsorption capacity, and the washing solution is sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
Example 4
The salinized amine solution comprises AMP (mol%): 30, SO 3: 1, H2O: 69. the flow rate is 2m3/h, the operation temperature is 30 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 10.5ms/cm at the moment, then the mixture enters gel type ion exchange resin bleaching A400, the salified ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 9.9ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured through a regenerative flow meter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste amine liquid is sent to a waste amine liquid discharge pipe after the flow is measured by a waste liquid flowmeter. The anion exchange resin is washed with an alkali solution (20 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and restore the adsorption capacity, and the washing solution is sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
Example 5
The salinized amine solution comprises AMP (mol%): 30, SO 3: 1, H2O: 69. the flow rate is 2m3/h, the operation temperature is 30 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 10.5ms/cm at the moment, then the mixture enters macroporous styrene resin D301R, the salinized ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 9.8ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured through a regenerative flow meter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste amine liquid is sent to a waste amine liquid discharge pipe after the flow is measured by a waste liquid flowmeter. The anion exchange resin was washed with an alkali solution (10 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and recover the adsorption capacity, and the washing solution was sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
Example 6
The salinized amine solution comprises AMP (mol%): 30, SO 3: 1, H2O: 69. the flow rate is 2m3/h, the operation temperature is 30 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 10.5ms/cm at the moment, then the mixture enters an ion exchange resin D201, the salinized ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 9.7ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured through a regenerative flow meter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste amine liquid is sent to a waste amine liquid discharge pipe after the flow is measured by a waste liquid flowmeter. The anion exchange resin was washed with an alkali solution (10 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and recover the adsorption capacity, and the washing solution was sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
Example 7
The salinized amine solution comprises AMP (mol%): 20, SO 3: 1, H2O: 79. the flow rate is 2m3/h, the operation temperature is 30 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 10.2ms/cm at the moment, then the mixture enters an ion exchange resin D201, the salinized ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 9.6ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured through a regenerative flow meter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste amine liquid is sent to a waste amine liquid discharge pipe after the flow is measured by a waste liquid flowmeter. The anion exchange resin was washed with an alkali solution (10 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and recover the adsorption capacity, and the washing solution was sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
Example 8
The salinized amine solution comprises AMP (mol%): 20, SO 3: 1, H2O: 79. the flow rate is 2m3/h, the operation temperature is 40 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 10.4ms/cm at the moment, then the mixture enters an ion exchange resin D201, the salinized ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 9.8ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured through a regenerative flow meter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste amine liquid is sent to a waste amine liquid discharge pipe after the flow is measured by a waste liquid flowmeter. The anion exchange resin was washed with an alkali solution (10 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and recover the adsorption capacity, and the washing solution was sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
Example 9
The salinized amine solution comprises AMP (mol%): 20, SO 3: 1, H2O: 79. the flow rate is 2m3/h, the operation temperature is 40 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 10.4ms/cm at the moment, then the mixture enters macroporous styrene resin D301R, the salinized ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 9.7ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured through a regenerative flow meter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste amine liquid is sent to a waste amine liquid discharge pipe after the flow is measured by a waste liquid flowmeter. The anion exchange resin was washed with an alkali solution (10 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and recover the adsorption capacity, and the washing solution was sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
Example 10
The salinized amine solution comprises AMP (mol%): 10, SO 3: 1, H2O: 89. the flow rate is 2m3/h, the operation temperature is 40 ℃, the operation pressure is 0.3MPaG, the mixture enters a first conductivity analyzer after passing through an amine liquid filter, the conductivity is 10.2ms/cm at the moment, then the mixture enters macroporous styrene resin D301R, the salinized ions are removed, the mixture enters a second conductivity analyzer, the conductivity is 9.5ms/cm at the moment, and the mixture returns to the system for reuse after the flow rate is measured through a regenerative flow meter. And the desalted water passes through a desalted water filter, the anion exchange resin saturated in adsorption is washed, the amine liquid remained in the anion exchange resin is washed, and the waste amine liquid is sent to a waste amine liquid discharge pipe after the flow is measured by a waste liquid flowmeter. The anion exchange resin was washed with an alkali solution (10 wt% aqueous solution of NaoH) to regenerate the anion exchange resin and recover the adsorption capacity, and the washing solution was sent to a waste alkali solution discharge pipe through a waste liquid flow meter. And (4) flushing the regenerated anion exchange resin with desalted water, flushing residual alkali liquor of the anion exchange resin, and conveying flushing liquor to a wastewater discharge pipe through a waste liquor flowmeter.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A system for purifying a salted organic amine with an anion exchange resin, comprising: comprises an amine liquid filter, an exchange resin filter, a desalted water filter and an alkali liquor filter,
the liquid inlet of the amine liquid filter is communicated with the salinized amine liquid through a pipeline, the discharge port of the amine liquid filter is communicated with the side wall of the exchange resin filter through a pipeline,
the top liquid outlet of the exchange resin filter is communicated with a regenerated amine liquid discharge pipe, the bottom liquid outlet is respectively communicated with a waste amine liquid discharge pipe, a waste alkali liquid discharge pipe and a waste water discharge pipe through pipelines,
the liquid inlet of the desalted water filter is communicated with desalted water through a pipeline, the liquid inlet of the alkali liquor filter is communicated with the alkali liquor through a pipeline, and the liquid outlets of the desalted water filter and the alkali liquor filter are respectively communicated with the top liquid inlet of the exchange resin filter through pipelines.
2. The system of claim 1, wherein: and a first conductivity analyzer is arranged on a pipeline between the amine liquid filter and the exchange resin filter, and a second conductivity analyzer is arranged on a pipeline between the exchange resin filter and the regenerated amine liquid discharge pipe.
3. The system of claim 2, wherein: and a pressure monitoring pipeline is communicated between a pipeline between the first conductivity analyzer and the exchange resin filter and a pipeline between the second conductivity analyzer and the regenerated amine liquid discharge pipe, and a differential pressure gauge is arranged on the pressure monitoring pipeline.
4. The system of claim 1, wherein: and a regeneration flow meter is arranged on the regeneration amine liquid discharge pipe.
5. The system of claim 1, wherein: and the pipelines among the exchange resin filter, the waste amine liquid discharge pipe, the waste alkali liquid discharge pipe and the waste water discharge pipe are communicated with a waste liquid flow meter.
6. The system of claim 1, wherein: the exchange resin filters are arranged in parallel at least two.
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