CN109115003B - Closed circulating water supermolecule zero-discharge system - Google Patents

Closed circulating water supermolecule zero-discharge system Download PDF

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CN109115003B
CN109115003B CN201810912113.7A CN201810912113A CN109115003B CN 109115003 B CN109115003 B CN 109115003B CN 201810912113 A CN201810912113 A CN 201810912113A CN 109115003 B CN109115003 B CN 109115003B
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water
closed
pump
circulating pump
circulating
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CN109115003A (en
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金保全
韩泰清
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Shandong Qingjineng Environmental Protection Co.,Ltd.
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Shandong Qingjineng Environmental Protection Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • C23G1/063—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors heterocyclic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/105—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances combined with inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
    • C02F5/145—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus combined with inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/12—Oxygen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/12—Oxygen-containing compounds
    • C23F11/124—Carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/14—Nitrogen-containing compounds
    • C23F11/141—Amines; Quaternary ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/14—Nitrogen-containing compounds
    • C23F11/149—Heterocyclic compounds containing nitrogen as hetero atom
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/167—Phosphorus-containing compounds
    • C23F11/1676—Phosphonic acids
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • C23F11/182—Sulfur, boron or silicon containing compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • C23F11/187—Mixtures of inorganic inhibitors
    • C23F11/188—Mixtures of inorganic inhibitors containing phosphates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
    • F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C02F2103/023—Water in cooling circuits
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/08—Corrosion inhibition
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/04—Surfactants, used as part of a formulation or alone

Abstract

The invention discloses a closed circulating water supermolecule zero emission system which comprises a closed cooling tower, a first water replenishing tank, a second water replenishing tank, a first circulating pump, a second circulating pump, a first liquid replenishing pump, a second liquid replenishing pump, a heat exchange coil and a plurality of water-cooled heat exchangers, wherein the closed cooling tower is provided with a first cooling tower and a second cooling tower; the upper part of the closed cooling tower is provided with a spray pipe, the lower part of the closed cooling tower is provided with a water storage tank, a second circulating pump is connected between the spray pipe and the water storage tank, and a second liquid supplementing pump is connected between a second water supplementing tank and a pipeline for connecting the second circulating pump with the water storage tank; the water cooling heat exchangers are arranged in parallel, the heat exchange coil, the first circulating pump and the water cooling heat exchangers are connected together to form a closed circulating flow path, and the first water replenishing tank is connected to the closed circulating flow path through the first water replenishing pump; the first water replenishing tank is filled with a first supermolecule medicament, the second water replenishing tank is filled with a second supermolecule medicament, and the second circulating pump is further provided with a bypass filter in parallel. The cooling water heat exchange efficiency of the system is improved, and the sewage discharge is reduced.

Description

Closed circulating water supermolecule zero-discharge system
Technical Field
The invention relates to the technical field of chemical industry, in particular to a closed circulating water supermolecule zero-emission system.
Background
The per capita water resource amount of China is only 1/4 which is the average level in the world, is one of the countries with the most poor per capita water resource in the world, and is distributed seriously unevenly. With the development of economic society, the demand of water resources is increasing, and the quantity of available fresh water resources is reduced year by year due to water pollution, excessive exploitation and the like, so that the water price is continuously increased, the national supervision on sewage discharge is more and more strict, and the reuse of industrial water is promoted. The reuse of industrial water not only makes full use of water resources and reduces the pollution to the environment caused by the direct discharge of sewage, but also is an important way for relieving the shortage of water resources, preventing and treating water pollution and protecting the environment for cities with shortage of fresh water resources and serious shortage of water supply. At present, industrial wastewater can be used as cooling water after being treated, the most common and representative purpose is industrial cooling water, in the industrial water, the proportion of circulating cooling water accounts for 70% -80%, and water serving as water supplement of the circulating cooling water can save water resources and reduce sewage discharge. However, as the concentration multiple of the cooling water is increased and the water quality is deteriorated, scales are often formed in the heat exchange equipment and the pipeline, so that the heat exchange efficiency is affected, and meanwhile, if the scales in the heat exchange equipment are serious, the replacement and pollution discharge are still needed, so that the phenomenon of sewage discharge occurs. The invention aims to solve the technical problem of how to design a scheme for reducing sewage discharge and improving cooling water heat exchange efficiency.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the closed circulating water supermolecule zero-emission system is provided, the cooling water heat exchange efficiency of the closed circulating water supermolecule zero-emission system is improved, and the effects of zero corrosion, zero scaling and zero pollution discharge are achieved.
The invention provides a closed circulating water supermolecule zero emission system which comprises a closed cooling tower, a first water replenishing tank, a second water replenishing tank, a first circulating pump, a second circulating pump, a first liquid replenishing pump, a second liquid replenishing pump, a heat exchange coil and a plurality of water-cooled heat exchangers, wherein the closed cooling tower is provided with a first water replenishing tank and a second water replenishing tank; the upper part of the closed cooling tower is provided with a spray pipe, the lower part of the closed cooling tower is provided with a water storage tank, the second circulating pump is connected between the spray pipe and the water storage tank, and the second liquid supplementing pump is connected between the second water supplementing tank and a pipeline for connecting the second circulating pump with the water storage tank; the plurality of water-cooled heat exchangers are arranged in parallel, the heat exchange coil, the first circulating pump and the water-cooled heat exchangers are connected together to form a closed circulating flow path, and the first water supplementing tank is connected to the closed circulating flow path through the first liquid supplementing pump; a first supermolecule medicament is contained in the first water replenishing tank, a second supermolecule medicament is contained in the second water replenishing tank, and a bypass filter is further arranged on the second circulating pump in parallel; the first supramolecular agent includes the following components in weight percent: 4-5% of benzotriazole, 15-20% of polyepoxysuccinic acid, 10-14% of hydroxy ethylidene diphosphonic acid, 0.1-0.2% of fatty alcohol-polyoxyethylene ether, 3-5% of polyacrylic acid, 1-3% of o-nitrophenol benzylamine, 2-3% of trisodium phosphate, 1.5-2.5% of ethylenediamine triacetic acid, 2-2.5% of sodium silicate and the balance of water; the second supramolecular agent includes the following components in weight percent: 20-25% of hydroxy ethylidene diphosphonic acid, 3-5% of sodium silicate, 0.5-1% of fatty alcohol-polyoxyethylene ether, 8-12% of diethylenetriamine pentamethylene phosphoric acid, 1-2% of cationic surfactant and the balance of water.
Further, the first supramolecular agent further includes: 1 to 1.5 percent of disodium ethylene diamine tetraacetate, 1 to 1.5 percent of polyethylene glycol, 0.5 to 1 percent of sodium dodecyl benzene sulfonate, 0.5 to 1 percent of sodium di-sec-octyl maleate sulfonate and 0.3 to 0.8 percent of p-aminobenzoic acid.
Further, a first valve is arranged between the second circulating pump and the water reservoir, and a first corrosion and scale detection device is arranged on the first valve in parallel; and a second valve is also arranged between the outlet of the first circulating pump and the inlet of the heat exchange coil, and a second corrosion and scaling detection device is arranged on the second valve in parallel.
Compared with the prior art, the invention has the advantages and positive effects that: according to the closed circulating water supermolecule zero-emission system provided by the invention, corrosion inhibition is carried out by benzotriazole in the first supermolecule agent to ensure the corrosion resistance of the cleaning agent, trisodium phosphate, ethylenediamine triacetic acid, polyacrylic acid and sodium silicate are matched to adsorb, bond and decompose dirt in a closed circulating flow path, so that waste water does not need to be discharged, dissolved oxygen in water can be prevented from contacting with the surface of metal to corrode the metal, zero corrosion, zero scaling and zero pollution discharge of closed circulating cooling equipment are realized, meanwhile, polyepoxysuccinic acid, hydroxy ethylidene diphosphonic acid, fatty alcohol polyoxyethylene ether, o-nitrophenol benzylamine and other components are cooperated to play a supermolecule self-assembly role, and after various rusty scales, oil scales, mud scales and other dirt on the surface of the metal are removed, a supermolecule film is formed on the surface of the metal to achieve the effect of delaying scaling; meanwhile, the heat exchange device can effectively reduce scale formation in the cooling process, effectively improve the cooling water heat exchange efficiency of the closed circulating water supermolecule zero-emission system, and achieve the effects of zero corrosion, zero scale formation and zero pollution discharge.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a reference diagram of the use state of the closed circulating water supramolecular zero-emission system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the closed circulating water supramolecular zero-emission system in the embodiment includes a closed cooling tower 21, a second water replenishing tank 1, a second circulating pump 22, a second liquid replenishing pump 24, a heat exchange coil 31, a first circulating pump 32, a plurality of water-cooled heat exchangers 33, and a first water replenishing tank 34; a spray pipe 211 is arranged at the upper part of the closed cooling tower 21, a water reservoir 212 is arranged at the lower part of the closed cooling tower 21, the second circulating pump 22 is connected between the spray pipe 211 and the water reservoir 212, and the second liquid replenishing pump 24 is connected between the second water replenishing tank 1 and a pipeline connecting the second circulating pump 22 with the water reservoir 212; the plurality of water-cooled heat exchangers 33 are arranged in parallel, the heat exchange coil 31, the first circulating pump 32 and the water-cooled heat exchangers 33 are connected together to form a closed circulating flow path, and the first make-up water tank 34 is connected with the closed circulating flow path through a first make-up water pump 341; the first water replenishing tank 34 contains a first supramolecular medicament, and the second water replenishing tank 1 contains a second supramolecular medicament; the first supramolecular agent includes the following components in weight percent: 4-5% of benzotriazole, 15-20% of polyepoxysuccinic acid, 10-14% of hydroxy ethylidene diphosphonic acid, 0.1-0.2% of fatty alcohol-polyoxyethylene ether, 3-5% of polyacrylic acid, 1-3% of o-nitrophenol benzylamine, 2-3% of trisodium phosphate, 1.5-2.5% of ethylenediamine triacetic acid, 2-2.5% of sodium silicate and the balance of water; the second supramolecular agent includes the following components in weight percent: 20-25% of hydroxy ethylidene diphosphonic acid, 3-5% of sodium silicate, 0.5-1% of fatty alcohol-polyoxyethylene ether, 8-12% of diethylenetriamine pentamethylene phosphoric acid, 1-2% of cationic surfactant and the balance of water.
Specifically, in order to reduce the sewage discharge amount of the cooling water and improve the service life and the service reliability of the equipment, the closed cooling tower 21 and the closed circulation flow path are respectively added with the supramolecular reagents, wherein the second supramolecular reagent contained in the second water replenishing tank 1 is input to the second circulation pump 22 by the second liquid replenishing pump 24 for the closed cooling tower 21, the second supramolecular reagent and the water in the reservoir 212 are conveyed to the spray pipe 211 by the second circulation pump 22, the spray pipe 211 sprays the liquid onto the heat exchange coil 31 for heat exchange and water cooling, and under the action of the second supramolecular reagent, a supramolecular film can be formed on the surfaces of the spray pipe 211 and the heat exchange coil 31, so that the generation of scale formation is reduced, and meanwhile, since the macromolecular substances in the second supramolecular reagent can be bridged with water molecules and inorganic salt molecules in the circulation water, the space net-shaped molecular groups are formed by weak intermolecular forces such as hydrogen bonds, so that the circulating water is in a laminar-like state, and the heat exchange efficiency is further improved. Similarly, in the closed circulation flow path, the first supramolecular medicament in the first water replenishing tank 34 and water are input into the closed circulation flow path together through the first liquid replenishing pump 341 for water circulation cooling, in the closed circulation flow path, the corrosion of the reclaimed water to the metal pipe wall can be weakened by the first supramolecular medicament, meanwhile, the first supramolecular medicament can also form a supramolecular film on the metal surface to achieve the effect of delaying scaling, and the cooling water is in the circulation cooling process of the closed circulation flow path for a long time, the first supramolecular medicament adsorbs, bonds and decomposes the dirt in the water, so that zero sewage discharge is realized. In addition, in the preparation process of the first supramolecular medicament and the second supramolecular medicament in the embodiment, after relevant components are put into water according to the weight ratio and stirred uniformly, sodium hydroxide is added finally to adjust the pH value to be in a neutral state of 6.5-7.5. Preferably, the first supramolecular agent further includes: 1 to 1.5 percent of disodium ethylene diamine tetraacetate, 1 to 1.5 percent of polyethylene glycol, 0.5 to 1 percent of sodium dodecyl benzene sulfonate, 0.5 to 1 percent of sodium di-sec-octyl maleate sulfonate and 0.3 to 0.8 percent of p-aminobenzoic acid. In the actual use process, the weight ratio of the supermolecule medicament accounts for 1-3% of the total cooling liquid.
Further, a bypass filter 25 is also connected in parallel to the second circulation pump 22. Specifically, by adding the bypass filter 25, the flowing cooling water can be further filtered by utilizing the bypass filter 25 in the circulating cooling process, so that the sewage discharge amount can be greatly reduced, even the sewage is not discharged, and the water saving rate is improved;
furthermore, a first valve 26 is arranged between the second circulating pump 22 and the water reservoir 212, and a first corrosion and scale detection device 20 is arranged on the first valve 26 in parallel; a second valve 35 is further arranged between the outlet of the first circulating pump 32 and the inlet of the heat exchange coil 31, and a second corrosion and scale detection device 30 is arranged on the second valve 35 in parallel. Specifically, the first corrosion and scale detection device 20 and the second corrosion and scale detection device 30 can be used for judging the scale formation in the cooling water, and an operator can refer to whether the supramolecular medicament needs to be increased or not in sequence.
The invention also provides a use method of the closed circulating water supermolecule zero-emission system, and the cooling method comprises a semi-closed cooling mode and a fully-closed cooling mode;
the semi-closed cooling mode comprises: the second circulating pump conveys the reclaimed water in the reservoir to the spray pipe for spray cooling, and meanwhile, the second liquid supplementing pump injects a second supermolecule medicament in the second water supplementing tank to the second circulating pump, and the second circulating pump and the second supermolecule medicament are conveyed to the spray pipe together;
the totally enclosed cooling mode includes: the first water replenishing tank conveys the cooling liquid mixed with the first supramolecular medicament to the closed circulation flow path through the first liquid replenishing pump for circulation cooling, and the first supramolecular medicament forms a supramolecular film on the inner wall of the heat exchange coil and the inner surface of the water-cooled heat exchanger.
Compared with the prior art, the invention has the advantages and positive effects that: the closed circulating water supermolecule zero-emission system and the using method provided by the invention ensure the anti-corrosion performance of the cleaning agent through the corrosion inhibition of the benzotriazole in the first supermolecule agent, and the trisodium phosphate, the ethylenediamine triacetic acid, the polyacrylic acid and the sodium silicate are matched with each other to adsorb, bond and decompose the dirt in the closed circulation flow path, thereby avoiding the discharge of waste water, preventing the contact of dissolved oxygen in water and the surface of metal to corrode the metal, realizing zero corrosion, zero scaling and zero pollution discharge of closed circulating cooling equipment, meanwhile, the components such as polyepoxysuccinic acid, hydroxyethylidene diphosphonic acid, fatty alcohol-polyoxyethylene ether, o-nitrophenol benzylamine and the like cooperatively play a role in supermolecule self-assembly, after removing various scales such as rust scale, oil scale, mud scale and the like on the metal surface, a layer of supramolecular film is formed on the metal surface to achieve the effect of delaying scaling; meanwhile, the heat exchange device can effectively reduce scale formation in the cooling process, and can effectively improve the cooling water heat exchange efficiency of the closed circulating water supermolecule zero-emission system.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (3)

1. A closed circulating water supermolecule zero-emission system is characterized by comprising a closed cooling tower, a first water replenishing tank, a second water replenishing tank, a first circulating pump, a second circulating pump, a first liquid replenishing pump, a second liquid replenishing pump, a heat exchange coil and a plurality of water-cooled heat exchangers; the upper part of the closed cooling tower is provided with a spray pipe, the lower part of the closed cooling tower is provided with a water storage tank, the second circulating pump is connected between the spray pipe and the water storage tank, and the second liquid supplementing pump is connected between the second water supplementing tank and a pipeline for connecting the second circulating pump with the water storage tank; the plurality of water-cooled heat exchangers are arranged in parallel, the heat exchange coil, the first circulating pump and the water-cooled heat exchangers are connected together to form a closed circulating flow path, and the first water supplementing tank is connected to the closed circulating flow path through the first liquid supplementing pump; a first supermolecule medicament is contained in the first water replenishing tank, a second supermolecule medicament is contained in the second water replenishing tank, and a bypass filter is further arranged on the second circulating pump in parallel; the first supramolecular agent includes the following components in weight percent: 4-5% of benzotriazole, 15-20% of polyepoxysuccinic acid, 10-14% of hydroxy ethylidene diphosphonic acid, 0.1-0.2% of fatty alcohol-polyoxyethylene ether, 3-5% of polyacrylic acid, 1-3% of o-nitrophenol benzylamine, 2-3% of trisodium phosphate, 1.5-2.5% of ethylenediamine triacetic acid, 2-2.5% of sodium silicate and the balance of water; the second supramolecular agent includes the following components in weight percent: 20-25% of hydroxy ethylidene diphosphonic acid, 3-5% of sodium silicate, 0.5-1% of fatty alcohol-polyoxyethylene ether, 8-12% of diethylenetriamine pentamethylene phosphoric acid, 1-2% of cationic surfactant and the balance of water;
in a semi-closed cooling mode, the second circulating pump conveys water in the water storage tank to the spray pipe for spray cooling, and meanwhile, the second liquid supplementing pump injects a second supermolecule medicament in the second water supplementing tank to the second circulating pump, and the second circulating pump and the second supermolecule medicament are conveyed to the spray pipe;
under the totally enclosed cooling mode, the first water replenishing tank conveys the cooling liquid mixed with the first supramolecular medicament to the closed circulation flow path through the first liquid replenishing pump for circulation cooling, and the first supramolecular medicament forms a supramolecular film on the inner wall of the heat exchange coil and the inner surface of the water-cooled heat exchanger.
2. The closed loop water supramolecular zero-emission system of claim 1, wherein the first supramolecular agent further comprises: 1 to 1.5 percent of disodium ethylene diamine tetraacetate, 1 to 1.5 percent of polyethylene glycol, 0.5 to 1 percent of sodium dodecyl benzene sulfonate, 0.5 to 1 percent of sodium di-sec-octyl maleate sulfonate and 0.3 to 0.8 percent of p-aminobenzoic acid.
3. The closed circulating water supramolecular zero-emission system as claimed in claim 1, wherein a first valve is arranged between the second circulating pump and the water reservoir, and a first corrosion and scale detection device is arranged on the first valve in parallel; and a second valve is also arranged between the outlet of the first circulating pump and the inlet of the heat exchange coil, and a second corrosion and scaling detection device is arranged on the second valve in parallel.
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