CN113267086A - Method for improving quality of circulating cooling water in sulfuric acid dry absorption process - Google Patents
Method for improving quality of circulating cooling water in sulfuric acid dry absorption process Download PDFInfo
- Publication number
- CN113267086A CN113267086A CN202011160993.0A CN202011160993A CN113267086A CN 113267086 A CN113267086 A CN 113267086A CN 202011160993 A CN202011160993 A CN 202011160993A CN 113267086 A CN113267086 A CN 113267086A
- Authority
- CN
- China
- Prior art keywords
- water
- sulfuric acid
- absorption process
- quality
- circulating cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F2025/005—Liquid collection; Liquid treatment; Liquid recirculation; Addition of make-up liquid
Abstract
The invention provides a method for improving the quality of circulating cooling water in a sulfuric acid dry absorption process, which comprises the following steps: a section of branch pipe is separated on a circulating water pipeline of a water cooling tower entering a dry acid absorption cooler and is used as a secondary detergent, and a secondary washer in a purification procedure is used for supplementing water in the purification procedure and can be applied to a sulfuric acid dry absorption procedure. The invention relates to a method for improving the quality of circulating cooling water in a sulfuric acid dry absorption process. The invention aims to mainly aim at the purposes that the water source of the circulating cooling water in the existing sulfuric acid dry absorption process of a lead smelting plant is river water and has poor water quality, and the high-temperature absorption process is adopted, so that the formation of scale is aggravated, the heat exchange effect of a shell-and-tube acid cooler is poor, the acid temperature is difficult to control, the corrosion of equipment is aggravated, the sulfuric acid production is severely restricted, the water quality of the circulating cooling water is fundamentally improved by effectively opening a water cooling tower for the condition.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a method for improving the quality of circulating cooling water in a sulfuric acid dry absorption process.
Background
The high-temperature absorption process is adopted in the sulfuric acid dry absorption procedure, the acid temperature in the acid cooler is high, generally, the acid temperature is as high as 80 ℃, the return water temperature of the acid cooler is more than 45 ℃, the scaling speed of the inner wall of the pipeline in the acid cooler is high and serious, even crystallization, pipeline blockage and unsmooth water flow are caused; the temperature of acid in the acid cooler is high, which brings serious influence to production.
Scaling of the inner pipeline of the acid cooler, accumulation of chloride ions and the like in a scaling layer, and acceleration of corrosion of the inner pipeline of the acid cooler due to high acid temperature; the average service life of the first and second acid absorption coolers of the sulfuric acid section of the lead smelting plant is less than five years and is far less than the design life of 10-12 years. The scaling, crystallization and cleaning of the inner wall of the pipeline need to spend a large amount of time and maintenance cost, and great influence is brought to the production.
The circulating cooling water system is contacted with the air, the water cooling tower can wash dust and harmful gases in the air, and the supplementary water contains rich nutrient sources, bacteria and algae sources and biological slime, the substances are easy to deposit in the equipment, a large amount of bacteria and algae are bred, after the circulating water is concentrated, scale formation and corrosion factors are aggravated, the heat exchange effect is influenced, and pipelines and equipment are blocked and corroded. The waste water treatment pressure of the lead smelting plant is high, and the bottom flow pollution discharge of the water cooling tower is cancelled, so that the improvement of the water quality of the circulating cooling water system is particularly important.
The main measures for improving the circulating cooling water in the dry absorption process of the sulfuric acid in the prior art are as follows:
the circulating cooling water is partially or completely replaced by soft water or chemical water, so that high-concentration calcium and magnesium ions in water are removed, and scaling and crystallization of pipelines in the acid cooler at high temperature are slowed down.
Secondly, agents such as sterilizing algicide, corrosion and scale inhibitor and the like are orderly added into the water cooling tower to stabilize the quality of the circulating cooling water, and certain operation cost is required.
And thirdly, the circulating water is replaced by the underflow of the cold water tower to improve the quality of the circulating water, certain environmental protection risks exist, and the pressure of wastewater treatment is high.
Disclosure of Invention
The invention aims to provide a method for improving the quality of circulating cooling water in a sulfuric acid dry absorption process, which aims at the problems that the circulating cooling water in the existing sulfuric acid dry absorption process of a lead smelting plant has poor water quality because the water source is river water and the water quality is poor, and the formation of scale is aggravated by adopting high-temperature absorption in the dry absorption process, so that a shell-and-tube acid cooler has poor heat exchange effect, the acid temperature is difficult to control, the corrosion of equipment is aggravated, the production of sulfuric acid is severely restricted, the root of the aggravation is in the quality of the circulating cooling water, and for the condition, the aim of improving the quality of the circulating cooling water in the dry absorption process is fulfilled by effectively opening a water cooling tower.
The technical scheme of the invention is realized as follows:
the invention provides a method for improving the quality of circulating cooling water in a sulfuric acid dry absorption process, which comprises the following steps: a section of branch pipe is separated on a circulating water pipeline of a water cooling tower entering a dry acid absorption cooler and used as a secondary detergent, and a secondary washer in the purification procedure is used for supplementing water in the purification procedure.
The invention further protects the application of the method in the sulfuric acid dry absorption process.
The invention has the following beneficial effects: the invention aims to improve circulating water by effectively discharging circulating water in a water cooling tower in an open-circuit manner, reduce cost investment and reduce environmental protection pressure.
The invention relates to a method for improving the quality of circulating cooling water in a sulfuric acid dry absorption process. The invention aims to mainly aim at the purposes that the water source of the circulating cooling water in the existing sulfuric acid dry absorption process of a lead smelting plant is river water and has poor water quality, and the high-temperature absorption process is adopted, so that the formation of scale is aggravated, the heat exchange effect of a shell-and-tube acid cooler is poor, the acid temperature is difficult to control, the corrosion of equipment is aggravated, the sulfuric acid production is severely restricted, the water quality of the circulating cooling water is fundamentally improved by effectively opening a water cooling tower for the condition.
The advantages are as follows:
the method has the advantages that scaling of cooling water pipes in the three acid coolers is avoided to reduce the cooling effect, and the normal and orderly operation of the sulfuric acid dry absorption production is ensured.
And the maintenance cost of equipment such as acid coolers and the like is reduced by more than 30 ten thousand yuan each year.
And the service life of the acid cooler is prolonged, and the existing 5-year service life of the acid cooler can be prolonged to more than 10 years.
Fourthly, the amount of purified and fresh-water-supplemented water is saved by more than 2000 tons/month, and the cost of wastewater treatment is saved by more than 1000 yuan/day.
Compared with the method for stabilizing the circulating water quality by using the medicament, the method can save more than 17 ten thousand yuan per year for improving the circulating water quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only 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 process flow chart of the method for improving the quality of the circulating cooling water in the sulfuric acid dry absorption process.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.
Referring to the attached figure 1, the method for improving the quality of the circulating cooling water in the sulfuric acid dry absorption process comprises the following steps: a section of branch pipe is separated on a circulating water pipeline of a water cooling tower entering a dry acid absorption cooler and is used as a secondary detergent, and a secondary washer in a purification procedure is used for supplementing water in the purification procedure.
Compared with the prior art, the invention aims to improve the circulating water by effectively discharging the circulating water in the water cooling tower in an open-circuit manner, reduce the cost input and reduce the environmental protection pressure.
The invention relates to a method for improving the quality of circulating cooling water in a sulfuric acid dry absorption process. The invention aims to mainly aim at the purposes that the water source of the circulating cooling water in the existing sulfuric acid dry absorption process of a lead smelting plant is river water and has poor water quality, and the high-temperature absorption process is adopted, so that the formation of scale is aggravated, the heat exchange effect of a shell-and-tube acid cooler is poor, the acid temperature is difficult to control, the corrosion of equipment is aggravated, the sulfuric acid production is severely restricted, the water quality of the circulating cooling water is fundamentally improved by effectively opening a water cooling tower for the condition.
The advantages are as follows:
the method has the advantages that scaling of cooling water pipes in the three acid coolers is avoided to reduce the cooling effect, and the normal and orderly operation of the sulfuric acid dry absorption production is ensured.
And the maintenance cost of equipment such as acid coolers and the like is reduced by more than 30 ten thousand yuan each year.
And the service life of the acid cooler is prolonged, and the existing 5-year service life of the acid cooler can be prolonged to more than 10 years.
Fourthly, the amount of purified and fresh-water-supplemented water is saved by more than 2000 tons/month, and the cost of wastewater treatment is saved by more than 1000 yuan/day.
Compared with the method for stabilizing the circulating water quality by using the medicament, the method can save more than 17 ten thousand yuan per year for improving the circulating water quality.
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 invention, 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 (2)
1. A method for improving the quality of circulating cooling water in a sulfuric acid dry absorption process is characterized by comprising the following steps: a section of branch pipe is separated on a circulating water pipeline of a water cooling tower entering a dry acid absorption cooler and used as a secondary detergent, and a secondary washer in the purification procedure is used for supplementing water in the purification procedure.
2. Use of the method of claim 1 in a sulfuric acid dry sorption process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160993.0A CN113267086A (en) | 2020-10-27 | 2020-10-27 | Method for improving quality of circulating cooling water in sulfuric acid dry absorption process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160993.0A CN113267086A (en) | 2020-10-27 | 2020-10-27 | Method for improving quality of circulating cooling water in sulfuric acid dry absorption process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113267086A true CN113267086A (en) | 2021-08-17 |
Family
ID=77227803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011160993.0A Pending CN113267086A (en) | 2020-10-27 | 2020-10-27 | Method for improving quality of circulating cooling water in sulfuric acid dry absorption process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113267086A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB169996A (en) * | 1920-10-07 | 1922-12-14 | Koppers Co Inc | Apparatus and process for purifying gases |
| CH604802A5 (en) * | 1975-01-23 | 1978-09-15 | Wehrle Werk Ag | |
| AU5795780A (en) * | 1975-09-30 | 1980-07-10 | Wynn Oil Company | Flushing liquid circulation system |
| JP2002364830A (en) * | 2001-06-07 | 2002-12-18 | Mitsubishi Heavy Ind Ltd | Device for removing so3 from flue gas |
| DE202015100468U1 (en) * | 2015-01-15 | 2015-02-10 | Ford Global Technologies, Llc | Device for heat transfer for a vehicle |
| RU160795U1 (en) * | 2015-08-25 | 2016-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Белгородский государственный технологический университет им. В.Г. Шухова" | SCRUBBER HEAT RECOVERY |
-
2020
- 2020-10-27 CN CN202011160993.0A patent/CN113267086A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB169996A (en) * | 1920-10-07 | 1922-12-14 | Koppers Co Inc | Apparatus and process for purifying gases |
| CH604802A5 (en) * | 1975-01-23 | 1978-09-15 | Wehrle Werk Ag | |
| AU5795780A (en) * | 1975-09-30 | 1980-07-10 | Wynn Oil Company | Flushing liquid circulation system |
| JP2002364830A (en) * | 2001-06-07 | 2002-12-18 | Mitsubishi Heavy Ind Ltd | Device for removing so3 from flue gas |
| DE202015100468U1 (en) * | 2015-01-15 | 2015-02-10 | Ford Global Technologies, Llc | Device for heat transfer for a vehicle |
| RU160795U1 (en) * | 2015-08-25 | 2016-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Белгородский государственный технологический университет им. В.Г. Шухова" | SCRUBBER HEAT RECOVERY |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203935761U (en) | Trimethylamine waste gas purification apparatus | |
| CN113267086A (en) | Method for improving quality of circulating cooling water in sulfuric acid dry absorption process | |
| CN104197309B (en) | Containing SO 3with the method for heat energy recycle in dust low-temperature flue gas | |
| CN1854092A (en) | Corrosion-proofing and antisludging method of boiler | |
| CN211864512U (en) | Coking chemical production area VOCs purifies environmental protection recovery system | |
| CN204607945U (en) | Cyanogen device falls in a kind of novel gas desulfurization and waste water | |
| CN209178076U (en) | A kind of recirculated water high concentration ratio system of simple economy | |
| CN210097363U (en) | A purifier for sulphur pond unloading tail gas | |
| CN111249888B (en) | Tail gas treatment device and process for wet regeneration of waste sulfuric acid | |
| CN210796080U (en) | Desulfurization waste water concentration device | |
| CN210001713U (en) | industrial circulating cooling water treatment system for methanol | |
| CN209263417U (en) | A kind of spiral evaporative condenser | |
| CN202744489U (en) | High-temperature malodorous gas purification equipment for coke cooling water tank | |
| CN206521287U (en) | A kind of refrigeration low-temperature water quality purifying device for water | |
| CN212357164U (en) | Biogas biological desulfurization equipment for anaerobic fermentation of kitchen waste | |
| CN109231439A (en) | A kind of the recirculated water high concentration ratio system and its working method of simple economy | |
| CN215975373U (en) | Circulating cooling water zero discharge system with closed low-temperature evaporation process | |
| CN204874807U (en) | Electroplate waste gas waste heat recovery device | |
| CN212482227U (en) | Heat exchange device for desulfurization wastewater and flue gas waste heat | |
| CN109761379A (en) | A kind of band fluorescence detects non-phosphorus scale and corrosion inhibitor and its process equipment automatically | |
| CN214880936U (en) | Device for recycling reclaimed water discharged from sugar production tail end | |
| CN209967727U (en) | Energy-saving flue gas purification system | |
| CN109928513A (en) | A method of sewage is handled using industrial circulating water system | |
| CN220513832U (en) | Flue gas emission treatment system | |
| CN217068331U (en) | Be used for industry flue gas/coal gas to purify unsaturated acid pickling method deamination device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |