阅读说明：本技术 一种提高中抽法体外再生工艺树脂分离度的系统及方法 (System and method for improving resin separation degree of in-vitro regeneration process by medium-pressure extraction method ) 是由 田文华 王垚 吴建国 曹红梅 王子闯 刘勇 邵正波 于信波 孙鹏 何玮 王栋杰 于 2020-11-05 设计创作，主要内容包括：本发明公开了一种提高中抽法体外再生工艺树脂分离度的系统及方法,包括高速混床来失效树脂管道、分离/阳再生塔、阳塔阴树脂出口阀、阴再生塔、阳塔混脂出口阀、混脂塔、阳塔阳树脂出口阀、储存塔、混脂塔混脂出口阀、阴塔阴树脂出口阀、储存塔树脂出口阀、再生树脂输出管道及储存塔阳树脂至阳塔一次阀,该系统及方法能够提高中抽法体外再生工艺分离度,满足高速混床氢型运行的再生要求。(The invention discloses a system and a method for improving the separation degree of resin in an external regeneration process of a medium-pumping process, which comprises a high-speed mixed bed failed resin pipeline, a separation/positive regeneration tower, a positive tower negative resin outlet valve, a negative regeneration tower, a positive tower mixed resin outlet valve, a mixed resin tower, a positive tower positive resin outlet valve, a storage tower, a mixed resin tower mixed resin outlet valve, a negative tower negative resin outlet valve, a storage tower resin outlet valve, a regenerated resin output pipeline and a storage tower positive resin to positive tower primary valve.)

1. A system and a method for improving the resin separation degree of a medium-pumping method in-vitro regeneration process are characterized by comprising a high-speed mixed bed failed resin pipeline, a separation/positive regeneration tower (A), a positive tower negative resin outlet valve (3), a negative regeneration tower (C), a positive tower mixed resin outlet valve (5), a mixed resin tower (B), a positive tower positive resin outlet valve (4), a storage tower (D), a mixed resin tower mixed resin outlet valve (6), a negative tower negative resin outlet valve (7), a storage tower resin outlet valve (9), a regenerated resin output pipeline and a storage tower positive resin to positive tower primary valve (8);

the high-speed mixed bed failure resin pipeline is communicated with the inlet of a separation/cation regeneration tower (A), the outlet of the anion resin of the separation/cation regeneration tower (A) is communicated with the inlet of a anion regeneration tower (C) through an anode anion resin outlet valve (3), the outlet at the bottom of the separation/cation regeneration tower (A) is divided into two paths, one path is communicated with the inlet of a fat mixing tower (B) through an anode fat mixing outlet valve (5), and the other path is communicated with the inlet of a storage tower (D) through an anode cation resin outlet valve (4); the bottom outlet of the mixed grease tower (B) is communicated with the inlet of the separation/positive regeneration tower (A) through a mixed grease tower mixed grease outlet valve (6), the bottom outlet of the negative regeneration tower (C) is communicated with the inlet of the storage tower (D) through a negative tower negative resin outlet valve (7), the bottom outlet of the storage tower (D) is divided into two paths, one path is communicated with a regenerated resin output pipeline through a storage tower resin outlet valve (9), the other path is communicated with the inlet of the separation/positive regeneration tower (A) through a storage tower positive resin-to-positive tower primary valve (8), and a resin intelligent interface controller (E) is arranged on the separation/positive regeneration tower (A).

2. The system for improving the separation degree of resin in the middle-extraction in-vitro regeneration process according to claim 1, wherein a mixed-bed failed resin male tower inlet valve (1) is arranged on a high-speed mixed-bed failed resin pipeline.

3. The system for improving the separation degree of resin in the middle-extraction in-vitro regeneration process according to claim 1, wherein the bottom outlet of the mixed-fat tower (B) is communicated with the inlet of the separation/positive regeneration tower (A) through a mixed-fat tower mixed-fat outlet valve (6) and a mixed-fat tower resin positive inlet tower valve (2).

4. The system for improving the resin separation degree of a mid-extraction in-vitro regeneration process according to claim 1, wherein the bottom outlet of the storage tower (D) is communicated with the inlet of the separation/positive regeneration tower (A) through a storage tower positive resin to positive tower primary valve (8) and a storage tower positive resin to positive tower secondary valve (10).

5. A method for improving the separation degree of resin in a medium-extraction method in-vitro regeneration process is characterized by comprising the following steps:

1) after the high-speed mixed bed resin is invalid, opening an inlet valve (1) of a mixed bed invalid resin positive tower, enabling the invalid resin to enter a separation/positive regeneration tower (A), and completing backwashing layering of the resin in the separation/positive regeneration tower (A);

2) opening the outlet valve (3) of the positive tower negative resin, and conveying the negative resin to the negative regeneration tower (C);

3) opening a positive resin outlet valve (4) of the positive tower, conveying the positive resin to a storage tower (D), and judging and controlling a positive resin conveying control end point by using a resin intelligent interface controller (E);

4) opening a positive column mixed grease outlet valve (5), and conveying the whole mixed grease to a mixed grease column (B);

5) opening the storage column positive resin to positive column primary valve (8) to deliver the spent positive resin to the separation/positive regeneration column (a);

6) the failed cation and anion resin are regenerated in a separation/cation regeneration tower (A) and an anion regeneration tower (C) respectively;

7) respectively conveying the regenerated cation resin and anion resin to a storage tower (D) for mixing and storing;

8) and (3) opening a mixed resin outlet valve (6) of the mixed resin tower when the resin is regenerated next time, and conveying the mixed resin in the mixed resin tower (B) to the separation/cation regeneration tower (A) to participate in backwashing layering.

Technical Field

The invention relates to a system and a method for resin separation degree, in particular to a system and a method for improving the separation degree of resin in a middle-extraction-method in-vitro regeneration process.

Background

In order to avoid the danger of the regenerated liquid leaking into a thermodynamic system, an external regeneration process is adopted in the high-speed mixed bed for the fine treatment of the condensed water in the power plant. The medium pumping method is used as an early in vitro regeneration process and is still used in a plurality of power plants in China.

The external regeneration process by the middle extraction method comprises a separation/positive regeneration tower, a negative regeneration tower, a mixed fat tower, a storage tower and other equipment. After the mixed resin is subjected to cation and anion resin layering in the separation/cation regeneration tower, the anion resin is conveyed to the anion regeneration tower from the side surface anion resin outlet, and the mixed resin layer resin is conveyed to the mixed resin tower from the side surface mixed resin outlet; and after the cation and anion resins are respectively regenerated in the cation regeneration tower and the anion regeneration tower, the cation and anion resins are conveyed to a storage tower for mixing and storage.

The following problems are found in practical use:

the diameter of the separation/positive regeneration tower is large, and negative resin and mixed grease are conveyed from the side surface, so that a conveying inclined surface is easily generated;

the positions of the negative grease outlet and the mixed grease outlet of the separation/positive regeneration tower are fixed, and the close distance causes the mixed grease layer to be very thin;

the characteristics of the middle extraction method determine that the proportion of the cation-anion resin can not be adjusted, and the current production requirement can not be met.

The above problems of the medium pumping method result in low resin separation degree, which can not meet the regeneration requirement of high-speed mixed bed hydrogen type operation, and can not ensure the effluent quality of the high-speed mixed bed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a system and a method for improving the resin separation degree of a medium-extraction-method in-vitro regeneration process, which can improve the separation degree of the medium-extraction-method in-vitro regeneration process and meet the regeneration requirement of high-speed mixed bed hydrogen type operation.

In order to achieve the above purpose, the system for improving the resin separation degree of the middle-pumping in-vitro regeneration process comprises a high-speed mixed bed to lose effectiveness of a resin pipeline, a separation/positive regeneration tower, a positive tower negative resin outlet valve, a negative regeneration tower, a positive tower mixed fat outlet valve, a mixed fat tower, a positive tower positive resin outlet valve, a storage tower, a mixed fat tower mixed fat outlet valve, a negative tower negative resin outlet valve, a storage tower resin outlet valve, a regenerated resin output pipeline and a storage tower positive resin to positive tower primary valve;

the high-speed mixed bed failure resin pipeline is communicated with an inlet of a separation/positive regeneration tower, a negative resin outlet of the separation/positive regeneration tower is communicated with an inlet of the negative regeneration tower through a positive tower negative resin outlet valve, a bottom outlet of the separation/positive regeneration tower is divided into two paths, one path is communicated with the inlet of a mixed grease tower through a positive tower mixed grease outlet valve, and the other path is communicated with the inlet of a storage tower through a positive tower positive resin outlet valve; the bottom outlet of the fat mixing tower is communicated with the inlet of the separation/positive regeneration tower through a fat mixing outlet valve of the fat mixing tower, the bottom outlet of the negative regeneration tower is communicated with the inlet of the storage tower through a negative resin outlet valve of the negative tower, the bottom outlet of the storage tower is divided into two paths, one path is communicated with a regenerated resin output pipeline through the resin outlet valve of the storage tower, the other path is communicated with the inlet of the separation/positive regeneration tower through a primary valve from positive resin of the storage tower to the positive tower, and a resin intelligent interface controller is arranged on the separation/positive regeneration tower.

The high-speed mixed bed failure resin pipeline is provided with a mixed bed failure resin anode tower inlet valve.

The outlet at the bottom of the mixed grease tower is communicated with the inlet of the separation/positive regeneration tower through a mixed grease outlet valve of the mixed grease tower and a resin inlet tower valve of the mixed grease tower.

The bottom outlet of the storage tower is communicated with the inlet of the separation/positive regeneration tower through a storage tower positive resin to positive tower primary valve and a storage tower positive resin to positive tower secondary valve.

The method for improving the separation degree of the resin in the in-vitro regeneration process of the medium-extraction method comprises the following steps:

1) after the high-speed mixed bed resin is invalid, opening an inlet valve of a mixed bed invalid resin positive tower, enabling the invalid resin to enter a separation/positive regeneration tower, and completing backwashing layering of the resin in the separation/positive regeneration tower;

2) opening a positive tower negative resin outlet valve, and conveying the negative resin to a negative regeneration tower;

3) opening a positive resin outlet valve of the positive tower, conveying the positive resin to a storage tower, and judging and controlling a positive resin conveying control end point by using a resin intelligent interface controller;

4) opening a cation column mixed grease outlet valve, and conveying the mixed grease to a mixed grease column;

5) opening the storage tower positive resin to positive tower primary valve to convey the failed positive resin to the separation/positive regeneration tower;

6) the failed cation and anion resin are respectively regenerated in a separation/cation regeneration tower and an anion regeneration tower;

7) respectively conveying the regenerated cation resin and anion resin to a storage tower for mixing and storage;

8) and opening a mixed resin outlet valve of the mixed resin tower when the resin is regenerated next time, and conveying the mixed resin in the mixed resin tower to the separation/cation regeneration tower to participate in backwashing layering.

The invention has the following beneficial effects:

the system and the method for improving the resin separation degree of the external regeneration process of the medium-pumping process cancel the mixed grease outlet on the side surface of the separation/positive regeneration tower in the original medium-pumping process and increase the mixed grease outlet at the bottom of the separation/positive regeneration tower, thereby changing the conveying position of the mixed grease from the side surface to the bottom, and changing the conveying sequence of the resin of the medium-pumping process from the original sequence: the anion resin feeding-mixed resin feeding is changed into anion resin feeding-cation resin feeding-mixed resin feeding-cation resin returning, and meanwhile, the intelligent control equipment is adopted to control the anode resin conveying end point, so that the problem that the resin proportion cannot be adjusted by a middle pumping method is solved, and the height of a mixed resin layer can be increased, so that the separation degree of the resin is improved, and the regeneration requirement of high-speed mixed bed hydrogen type operation is met.

Drawings

FIG. 1 is a system diagram of the present invention.

Wherein, A is a separation/positive regeneration tower, B is a mixed grease tower, C is a negative regeneration tower, D is a storage tower, E is a resin intelligent interface controller, 1 is a mixed bed failure resin positive tower inlet valve, 2 is a mixed grease tower resin positive inlet tower valve, 3 is a positive tower negative resin outlet valve, 4 is a positive tower positive resin outlet valve, 5 is a positive tower mixed grease outlet valve, 6 is a mixed grease tower mixed grease outlet valve, 7 is a negative tower negative resin outlet valve, 8 is a storage tower positive resin to positive tower primary valve, 9 is a storage tower resin outlet valve, and 10 is a storage tower positive resin to positive tower secondary valve.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1, the system for improving the resin separation degree of the middle-pumping in-vitro regeneration process comprises a high-speed mixed bed to failure resin pipeline, a separation/positive regeneration tower a, a positive tower negative resin outlet valve 3, a negative regeneration tower C, a positive tower mixed resin outlet valve 5, a mixed resin tower B, a positive tower positive resin outlet valve 4, a storage tower D, a mixed resin tower mixed resin outlet valve 6, a negative tower negative resin outlet valve 7, a storage tower resin outlet valve 9, a regenerated resin output pipeline and a storage tower positive resin to positive tower primary valve 8; the high-speed mixed bed failure resin pipeline is communicated with the inlet of a separation/cation regeneration tower A, the anion resin outlet of the separation/cation regeneration tower A is communicated with the inlet of a anion regeneration tower C through an anode tower anion resin outlet valve 3, the bottom outlet of the separation/cation regeneration tower A is divided into two paths, one path is communicated with the inlet of a fat mixing tower B through an anode tower fat mixing outlet valve 5, and the other path is communicated with the inlet of a storage tower D through an anode tower cation resin outlet valve 4; the bottom outlet of the mixed grease tower B is communicated with the inlet of the separation/positive regeneration tower A through a mixed grease tower mixed grease outlet valve 6, the bottom outlet of the negative regeneration tower C is communicated with the inlet of the storage tower D through a negative tower negative resin outlet valve 7, the bottom outlet of the storage tower D is divided into two paths, one path is communicated with a regenerated resin output pipeline through a storage tower resin outlet valve 9, the other path is communicated with the inlet of the separation/positive regeneration tower A through a storage tower positive resin-to-positive tower primary valve 8, and a resin intelligent interface controller E is arranged on the separation/positive regeneration tower A.

An inlet valve 1 of a mixed bed failure resin positive tower is arranged on a high-speed mixed bed failure resin pipeline; the bottom outlet of the mixed grease tower B is communicated with the inlet of the separation/positive regeneration tower A through a mixed grease outlet valve 6 of the mixed grease tower and a mixed grease tower resin inlet and positive tower valve 2; the bottom outlet of the storage tower D is communicated with the inlet of the separation/positive regeneration tower A through a storage tower positive resin to positive tower primary valve 8 and a storage tower positive resin to positive tower secondary valve 10.

The invention cancels the grease outlet and mixing port on the side surface of the separation/positive regeneration tower A in the original middle-pumping process, and adds the grease outlet and mixing port at the bottom of the separation/positive regeneration tower A, thereby changing the conveying position of the mixed grease from the side surface to the bottom. Meanwhile, the volume of the mixed fat layer is improved, and the height of the mixed fat layer is not limited by an equipment interface any more. In addition, the identification precision reaches 15 milliseconds/time by using the intelligent resin interface controller E based on the intelligent control technology of the male resin conveying end point.

The method for improving the resin separation degree of the in-vitro regeneration process of the medium extraction method comprises the following steps:

1) after the high-speed mixed bed resin is invalid, opening an inlet valve 1 of a mixed bed invalid resin positive tower, enabling the invalid resin to enter a separation/positive regeneration tower A, and completing backwashing layering of the resin in the separation/positive regeneration tower A;

2) opening the outlet valve 3 of the positive tower negative resin, and conveying the negative resin to the negative regeneration tower C;

3) opening a positive resin outlet valve 4 of the positive tower, conveying the positive resin to a storage tower D, and judging and controlling a positive resin conveying control end point by using a resin intelligent interface controller E;

4) opening a cation column mixed grease outlet valve 5, and conveying the mixed grease to a mixed grease column B;

5) opening a storage tower positive resin to positive tower primary valve 8 and a storage tower positive resin to positive tower secondary valve 10 to convey the failed positive resin to a separation/positive regeneration tower A;

6) the failed cation and anion resin are respectively regenerated in a separation/cation regeneration tower A and an anion regeneration tower C;

7) respectively conveying the regenerated cation resin and anion resin to a storage tower D for mixing and storage;

8) and (3) opening a mixed resin outlet valve 6 of the mixed resin tower and a resin inlet male tower valve 2 of the mixed resin tower when the resin is regenerated next time, and conveying the mixed resin in the mixed resin tower B to the separation/male regeneration tower A for carrying out backwashing stratification.