CN217868218U

CN217868218U - Joint control device for improving periodic water production of primary desalting system

Info

Publication number: CN217868218U
Application number: CN202222355677.XU
Authority: CN
Inventors: 许赫男; 王则东; 陈敬勇; 陈德仁; 徐骁; 王家洪
Original assignee: Huaneng Fujian Energy Development Co Ltd Fuzhou Branch
Current assignee: Huaneng Fujian Energy Development Co Ltd Fuzhou Branch
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2022-11-22
Anticipated expiration: 2032-09-05

Abstract

The utility model relates to a boiler make-up water processing system technical field of thermal power plant's boiler allies oneself with accuse device for improving one-level desalination system cycle water production, including Yang Da regeneration system and cloudy tower regeneration system, through setting up positive tower regeneration system and cloudy tower regeneration system, adjust one-level desalination system operation and acid-base regeneration mode, the regeneration control strategy is optimized in the configuration, during the sea water is poured backward, can reduce the regeneration frequency of one-level desalination system by a wide margin, reduce the acid-base quantity, boiler make-up water system's water production stability has also been stabilized, guarantee unit safety and stability operation.

Description

Joint control device for improving periodic water production of primary desalting system

Technical Field

The utility model relates to a ally oneself with accuse device for improving one-level desalination system cycle system water yield belongs to thermal power plant's boiler make-up water processing system technical field.

Background

The primary reverse osmosis, the primary desalting and the mixed bed of the boiler make-up water treatment system of the thermal power plant are used for preparing desalted water for the boiler make-up water of the coal-fired unit of the whole plant.

The primary desalting system comprises an activated carbon filter, yang Da, a vacuum degassing tower, an anion tower and the like, wherein the Yang Da and the anion tower are respectively filled with cation exchange resin and anion exchange resin and are used for removing most of salt in water. When the cation and anion resin is invalid, regeneration treatment is needed, namely, the cation and anion resin is regenerated by adopting acid and alkali solution in an ion exchange way, so that the invalid cation and anion resin recovers the exchange capacity with other anions and cations for reuse; the acid-base system is equipment in the regeneration process of a first-stage desalting system yin-yang tower and comprises an acid-base tank, an acid-base metering box, an acid-base ejector and the like.

Along with the expansion of production scale and the continuous extension of the reverse flow time of seawater, the long-term heavy-load operation of the primary desalting equipment has the problems of the increase of the salt content of the primary reverse osmosis inlet water, the decrease of the desalting rate and the like, so that the conductivity of the inlet of a primary desalting system is increased, the periodic water production of a negative tower and a positive tower is greatly reduced, the increase of the acid-base consumption, the increase of the water utilization rate, the increase of the operation cost and the influence on the stability of supplying the desalted water to the unit.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides an allies oneself with accuse device for improving one-level desalination system cycle system water production.

The technical scheme of the utility model as follows:

a joint control device for improving the periodic water production of a primary desalting system comprises a Yang Da regeneration system and a negative tower regeneration system;

the Yang Da regeneration system comprises an acid tank, the acid tank is connected with an acid metering box through a pipeline provided with an acid tank acid outlet valve, the acid metering box is connected with an acid ejector through a pipeline provided with a Yang Da acid inlet valve, the acid ejector is connected with Yang Da through a pipeline provided with a Yang Da acid inlet valve, the Yang Da is respectively connected with a Yang Da water inlet pipeline and a Yang Da middle discharge pipeline, the Yang Da water inlet pipeline and the Yang Da middle discharge pipeline are respectively provided with a Yang Da water inlet valve and a Yang Da middle discharge valve, and an acid concentration meter is arranged on the Yang Da middle discharge pipeline and is arranged downstream of the Yang Da middle discharge valve;

cloudy tower regeneration system includes the alkali jar, the alkali jar is connected with the alkali batch meter through being provided with alkali jar play alkali valve pipeline, the alkali batch meter is connected with the alkali sprayer through being provided with alkali batch meter play alkali valve, the alkali sprayer has cloudy tower through being provided with the pipe connection that cloudy tower entered the alkali valve, be connected with cloudy tower inlet channel and the weak positive row pipeline of cloudy tower on the cloudy tower respectively, cloudy tower inlet channel and the weak positive row valve of cloudy tower are provided with cloudy tower inlet valve and the weak positive row valve of cloudy tower on the row pipeline respectively of cloudy tower inlet channel, on the weak positive row pipeline of cloudy tower, be located cloudy tower is weak positive row valve downstream is provided with the alkali concentration meter.

Wherein, the acid injector is connected with a Yang Da water outlet pipeline on the anode pipeline and positioned at the downstream of the Yang Da acid inlet valve, and the Yang Da water outlet pipeline is provided with Yang Da water outlet valve.

And a cathode tower water outlet pipeline is connected to the alkali sprayer and positioned at the downstream of the alkali inlet valve of the cathode tower, and a cathode tower water outlet valve is arranged on the cathode tower water outlet pipeline.

The utility model discloses following beneficial effect has:

the utility model relates to a allies oneself with accuse device for improving one-level desalination system cycle system water yield, through setting up positive tower regeneration system and negative tower regeneration system, adjustment one-level desalination system operation and acid-base regeneration mode, regeneration control strategy is optimized in the configuration, during the sea water flows backward, can reduce the regeneration frequency of one-level desalination system by a wide margin, reduces the acid-base quantity, has also stabilized boiler make water system's system water stability, guarantee unit safety and stability operation.

Drawings

FIG. 1 is a schematic structural diagram of a Yang Da regeneration system of the present invention;

fig. 2 is a schematic structural diagram of the anion tower regeneration system of the present invention.

The reference numbers in the figures denote:

the system comprises a 1-acid tank acid outlet valve, a 2-acid metering box acid outlet valve, a 3-acid ejector, a 4-Yang Da water inlet valve, a 5-Yang Da acid inlet valve, a 6-Yang Da water outlet valve, a 7-Yang Da middle discharge valve, an 8-acid concentration meter, a 9-alkali tank alkali outlet valve, a 10-alkali metering box alkali outlet valve, an 11-alkali ejector, a 12-negative tower water inlet valve, a 13-negative tower alkali inlet valve, a 14-negative tower water outlet valve, a 15-negative tower weak positive discharge valve and a 16-alkali concentration meter.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, a joint control device for improving the periodic water production of a primary desalination system comprises a Yang Da regeneration system and a negative tower regeneration system;

the Yang Da regeneration system comprises an acid tank, the acid tank is connected with an acid metering box through a pipeline provided with an acid tank acid outlet valve 1, the acid metering box is connected with an acid ejector 3 through a pipeline provided with an acid metering box acid outlet valve 2, the acid ejector 3 is connected with Yang Da through a pipeline provided with a Yang Da acid inlet valve 5, yang Da is respectively connected with a Yang Da water inlet pipeline and a Yang Da medium drain pipeline, yang Da water inlet pipeline and Yang Da medium drain pipelines are respectively provided with a Yang Da water inlet valve 4 and a Yang Da medium drain valve 7, the acid ejector 3 is arranged on an anode pipeline, the Yang Da acid inlet valve 5 downstream is connected with a Yang Da water outlet pipeline, and the 4984 zxft 4972 zxft 5272 water outlet pipeline is provided with a Yang Da water outlet valve, and the acid outlet pipeline is arranged in 357945 and the anode tower 797 downstream of the acid outlet pipeline is provided with a concentrated acid outlet valve;

the negative tower regeneration system comprises an alkali tank, the alkali tank is connected with an alkali metering box through a pipeline provided with an alkali tank alkali outlet valve 9, the alkali metering box is connected with an alkali ejector 11 through a pipeline provided with an alkali metering box alkali outlet valve 10, the alkali ejector 11 is connected with a negative tower through a pipeline provided with a negative tower alkali inlet valve 13, the negative tower is respectively connected with a negative tower water inlet pipeline and a negative tower weak positive exhaust pipeline, a negative tower water inlet valve 12 and a negative tower weak positive exhaust valve 15 are respectively arranged on the negative tower water inlet pipeline and the negative tower weak positive exhaust pipeline, the alkali ejector 11 is connected to the negative tower pipeline and located at the downstream of the negative tower alkali inlet valve 13, a negative tower water outlet pipeline is arranged on the negative tower water outlet pipeline, and an alkali concentration meter 16 is arranged on the negative tower weak positive exhaust pipeline and located at the downstream of the negative tower weak positive exhaust valve 15.

The utility model discloses a theory of operation:

an acid concentration meter 8 and an alkali concentration meter 16 are respectively installed on a middle discharge pipeline of the positive tower and a weak positive discharge pipeline of the negative tower, the acid concentration meter 8 and the alkali concentration meter 16 are in communication connection with an external dosing control system controller and are used for acquiring and transmitting acid-alkali detection signals to the controller so as to link the start and stop of an acid-alkali dosing device, namely when acid and alkali are fed into the negative tower and Yang Da, when the concentration of acid reaches 3% and the concentration of alkali reaches 2%, the operation of an acid ejector 3 and an alkali ejector 11 are linked to stop, program control valves are all closed, acid and alkali liquor are respectively soaked in Yang Da and the negative tower for 2 hours, the replacement operation is started after full reaction, and the forward washing time is prolonged so as to improve the regeneration effect.

The normal regeneration process comprises the following steps: opening an acid outlet valve 1 of the acid tank, putting the hydrochloric acid solution of the acid tank into an acid metering box for metering, opening an acid outlet valve 2 of the acid metering box, an acid inlet valve 5 of Yang Da, an acid inlet valve 5 of Yang Da, a discharge valve 7 and an operating acid ejector 3 to regenerate the failed resin in Yang Da for about 20min, and directly performing replacement, normal washing and other steps after regeneration. In the severe seawater back-flow period, the primary desalination system needs to be deeply regenerated, so that the periodic water production of the primary desalination system can be ensured within a reasonable range.

The utility model discloses an at cloudy, yang Da discharge pipe respectively install an acid-base concentration meter additional, through acid-base concentration linkage acid-base charge device, optimize the operation simultaneously and operate programme-controlled, when acid, alkali concentration reachd 3%, 2% respectively, the linkage stops acid sprayer 3 and the operation of alkali sprayer 11, stops regeneration liquid 2h in the negative and positive tower, lets it fully soak, the degree of depth exchange reaction, at last begins the operation such as replacement, formal washing again.

Former technology regeneration scheme is with the complete back direct replacement that adds of acid-base in the batch meter, the utility model discloses synthesize the change of considering the internal resin volume of bed and the real-time adjustment acid-base of degree of failure add the dose and add the linkage medicine system after the medicine and soak 2h and replace again, improved resin regeneration efficiency, also practiced thrift the acid-base quantity. During the seawater back-flow period, the regeneration mode greatly improves the regeneration effect of the anion-cation exchange resin and improves the periodic water production of the primary desalting system.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a allies oneself with accuse device for improving one-level desalination system cycle water yield which characterized in that: comprises a Yang Da regeneration system and a negative tower regeneration system;

the Yang Da regeneration system comprises an acid tank, the acid tank is connected with an acid metering box through a pipeline provided with an acid tank acid outlet valve (1), the acid metering box is connected with an acid ejector (3) through a pipeline provided with an acid metering box acid outlet valve (2), the acid ejector (3) is connected with Yang Da through a pipeline provided with a Yang Da acid inlet valve (5), yang Da is respectively connected with a Yang Da water inlet pipeline and a Yang Da middle discharge pipeline, yang Da water inlet pipeline and Yang Da middle discharge pipeline are respectively provided with a Yang Da water inlet valve (4) and a Yang Da middle discharge valve (7), and the Yang Da middle discharge pipeline and the downstream of the Yang Da middle discharge valve (7) are respectively provided with an acid concentration (8);

cloudy tower regeneration system includes the alkali jar, the alkali jar goes out alkali valve (9) tube coupling through being provided with the alkali jar and has the alkali batch meter, the alkali batch meter goes out alkali valve (10) through being provided with the alkali batch meter and is connected with alkali sprayer (11), alkali sprayer (11) are connected with cloudy tower through the pipeline that is provided with cloudy tower alkali valve (13), be connected with cloudy tower inlet channel and the weak positive calandria of cloudy tower on the cloudy tower respectively, cloudy tower inlet channel and the weak positive calandria of cloudy tower are provided with respectively cloudy tower inlet valve (12) and the weak positive calandria of cloudy tower (15) on the road, on the weak positive calandria of cloudy tower, be located cloudy tower weak positive calandria valve (15) low reaches are provided with alkali concentration meter (16).

2. The integrated control device for increasing the periodic water production of the primary desalination system as claimed in claim 1, wherein: a Yang Da water outlet pipeline is connected on the acid ejector pipeline (3) to the anode pipeline and is positioned downstream of the Yang Da acid inlet valve (5), and an Yang Da water outlet valve (6) is arranged on the Yang Da water outlet pipeline.

3. The joint control device for improving the periodic water production of the primary desalination system as claimed in claim 1, wherein: and a cathode tower water outlet pipeline is connected with the downstream of the cathode tower alkali inlet valve (13) from the alkali injector (11) to the cathode tower pipeline, and a cathode tower water outlet valve (14) is arranged on the cathode tower water outlet pipeline.