CN111666670B - Method for determining water supplementing rate of circulating system through concentration multiplying power when impurities are removed - Google Patents
Method for determining water supplementing rate of circulating system through concentration multiplying power when impurities are removed Download PDFInfo
- Publication number
- CN111666670B CN111666670B CN202010474608.3A CN202010474608A CN111666670B CN 111666670 B CN111666670 B CN 111666670B CN 202010474608 A CN202010474608 A CN 202010474608A CN 111666670 B CN111666670 B CN 111666670B
- Authority
- CN
- China
- Prior art keywords
- water
- ions
- rate
- cooling system
- circulating
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Control Of Non-Electrical Variables (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention discloses a method for determining the water replenishing rate of a circulating system through concentration ratio when impurities are removed, which can objectively and truly reflect the operation parameters of the circulating water system, and timely adjust and check problems in operation, so that the water replenishing rate of the system is accurately controlled, the new water consumption of the system is reduced, and the effects of energy conservation and emission reduction are realized.
Description
Technical Field
The invention belongs to the field of environmental engineering, and particularly relates to a method for determining the water supplementing rate of a circulating system through concentration ratio when impurities are removed.
Background
Taking iron and steel enterprises as an example, the circulating water cooling system has very wide application and is indispensable to the production of the enterprises. Most of the operation modes are that water after heat exchange with equipment is conveyed into a tower by a lifting pump, and then heat exchange or heat and quality exchange is carried out between the water and air, so that the aim of reducing the water temperature is fulfilled.
The water system in developed countries has higher water management level, and generally considers the recycling and the reuse of water after treatment as much as possible, and considers the use of non-traditional water resources as a supplementary water source so as to reduce the use amount of new water and the amount of discharged waste water. Although the current domestic environmental protection policy is becoming strict, the enterprise also pays attention to the management of water resources, the correlation between the concentration ratio and the water replenishing ratio of the circulating system has not been quantitatively described by using the mathematical model theory.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the method for determining the water replenishing rate of the circulating system through the concentration ratio when impurities are removed, which can objectively and truly reflect the operation parameters of the circulating water system, and timely adjust and check the problems existing in operation, thereby accurately controlling the water replenishing rate of the system, reducing the new water consumption of the system and realizing the effects of energy conservation and emission reduction.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the method for determining the water supplementing rate of the circulating system through the concentration ratio when impurities are removed is characterized by comprising the following steps of: the circulating system is an open-type circulating water cooling system, comprises all pipeline valves, a cooling tower system and a production process heat exchange system, and is in a stable running state;
the only water supplementing rate entering the circulating water cooling system is F 0 The water discharge rate of the circulating water cooling system comprises F 1 And F 2 Wherein F 1 Is the water discharge rate of the discharged carried salt substances, F 2 Is the rate of water discharged only in the form of water molecules;
the concentration of each ion in the circulating water cooling system is C 11 ，C 12 ，C 13 ····C 1(n-1) ，C 1n And C 11 ＜C 12 ＜C 13 ····C 1(n-1) ＜C 1n The corresponding ion concentration in the water is C 01 ，C 02 ，C 03 ····C 0(n-1) ，C 0n Concentration ratio n= (C) of circulating water cooling system 11 +C 12 +C 13 +····+C 1(n-1) +C 1n )/(C 01 +C 02 +C 03 +····+C 0(n-1) +C 0n ) N is 3-5;
the impurity removal rate is H, and the impurity removal rate is the proportion of salt substances removed by the self-cleaning ring of the circulating water cooling system, and the removal means comprise, but are not limited to, side filtration and full filtration;
the ions in the circulating water cooling system comprise, but are not limited to, sodium ions, potassium ions, chloride ions, fluoride ions, calcium ions, magnesium ions, sulfate ions, nitrate ions, silicon ions, iron ions and aluminum ions, the concentration of the ions in 24 hours does not change under the condition of normal temperature and normal pressure illumination, and the ions are not contained in agents brought into the surrounding environment and added into the system;
said F 0 Only for artificial water replenishment, neglecting the effects of natural conditions including, but not limited to, rain, snow and hail;
said F 1 Contains salt substances with the same concentration as the circulating water cooling system, and is limited to the circulating water cooling systemThe leakage rate of the circulating water cooling system is zero, and the influence of phenomena of drifting, splashing and running and leaking are ignored but not limited;
said F 2 The water is discharged into the environment in the form of water molecules, including but not limited to evaporation of water surface, evaporation of water on the surface of an object, and is constant under natural conditions;
according to the water balance: f (F) 0 ＝F 1 +F 2 ；
According to the balance of water quality and salt substances: f (F) 0 ＝F 1 ·N+H·N(1-F 0 )；
Finally obtain F 0 ＝N(F 2 -H)·[N(1-H)-1] -1 。
The F is 2 The value is 0.01-0.02.
The invention has the beneficial effects that: the concentration ratio value of the circulating system can be objectively and truly obtained, so that the water supplementing rate of the system is accurately controlled, the new water consumption of the system is reduced, and the effects of energy conservation and emission reduction are realized.
Detailed Description
The following description is made in connection with specific embodiments:
example 1:
an open-type circulating water cooling system which runs stably for a long time, and the water supplementing rate is 0.0077 and F through practical measurement 2 The constant of (2) is 0.01, the concentration of potassium ions in the circulating system is 10.2mg/L, the concentration of magnesium ions is 22.1mg/L, and the concentration of chloride ions is 45.2mg/L; the concentration of potassium ions in the water is 3.5mg/L, the concentration of magnesium ions is 7.4mg/L, the concentration of chloride ions is 15.1mg/L, and the impurity removal rate H is 0.006.
Thus n= (10.2+22.1+45.2)/(3.5+7.4+15.1) =2.98,
system water replenishment rate F 0 ＝2.98×(0.01-0.006)/(2.98×0.994-1)＝0.0061。
Because the real water supplementing rate of the system obtained through model calculation is smaller than the water supplementing rate obtained through actual measurement, the problem that the water supplementing rate of the system is higher is judged. By checking the problems existing in the operation of the system, the actual water supplementing rate is reduced, and the reduction of the new water consumption is realized.
Example 2:
an open-type circulating water cooling system which runs stably for a long time, and the water supplementing rate is 0.015 and F is measured practically 2 The constant of (2) is 0.015, the concentration of silicon ions in the circulatory system is 1.5mg/L, the concentration of potassium ions is 15.6mg/L, and the concentration of magnesium ions is 23.8mg/L; the concentration of silicon ions in the water is 0.44mg/L, the concentration of potassium ions is 3.9mg/L, the concentration of magnesium ions is 5.9mg/L, and the impurity removal rate H is 0.008.
Thus n= (1.5+15.6+23.8)/(0.44+3.9+5.9) =3.99,
system water replenishment rate F 0 ＝3.99×(0.015-0.008)/(3.99×0.992-1)＝0.0094。
Because the real water supplementing rate of the system obtained through model calculation is smaller than the water supplementing rate obtained through actual measurement, the problem that the water supplementing rate of the system is higher is judged. By checking the problems existing in the operation of the system, the actual water supplementing rate is reduced, and the reduction of the new water consumption is realized.
Example 3:
an open-type circulating water cooling system which runs stably for a long time, and the water supplementing rate is 0.026 and F through practical measurement 2 The constant of (2) is 0.02, the concentration of silicon ions in the circulatory system is 2.5mg/L, the concentration of potassium ions is 15.5mg/L, and the concentration of calcium ions is 50.6mg/L; the concentration of silicon ions in the water is 1.52mg/L, the concentration of potassium ions is 3.2mg/L, the concentration of calcium ions is 10.3mg/L, and the impurity removal rate H is 0.01.
Thus n= (2.5+15.5+50.6)/(1.52+3.2+10.3) =4.57,
system water replenishment rate F 0 ＝4.57×(0.02-0.01)/(4.57×0.99-1)＝0.0130。
Because the real water supplementing rate of the system obtained through model calculation is smaller than the water supplementing rate obtained through actual measurement, the problem that the water supplementing rate of the system is higher is judged. By checking the problems existing in the operation of the system, the actual water supplementing rate is reduced, and the reduction of the new water consumption is realized.
Claims (2)
1. The method for determining the water supplementing rate of the circulating system through the concentration ratio when impurities are removed is characterized by comprising the following steps of: the circulating system is an open-type circulating water cooling system, comprises all pipeline valves, a cooling tower system and a production process heat exchange system, and is in a stable running state;
the only water supplementing rate entering the circulating water cooling system is F 0 The water discharge rate of the circulating water cooling system comprises F 1 And F 2 Wherein F 1 Is the water discharge rate of the discharged carried salt substances, F 2 Is the rate of water discharged only in the form of water molecules;
the concentration of each ion in the circulating water cooling system is C 11 ，C 12 ，C 13 ····C 1(n-1) ，C 1n And C 11 ＜C 12 ＜C 13 ····C 1(n-1) ＜C 1n The corresponding ion concentration in the water is C 01 ，C 02 ，C 03 ····C 0(n-1) ，C 0n Concentration ratio n= (C) of circulating water cooling system 11 +C 12 +C 13 +····+C 1(n-1) +C 1n )/(C 01 +C 02 +C 03 +····+C 0(n-1) +C 0n ) N is 3-5;
the impurity removal rate is H, and the impurity removal rate is the proportion of salt substances removed by the self-cleaning ring of the circulating water cooling system, and the removal means comprise, but are not limited to, side filtration and full filtration;
the ions in the circulating water cooling system comprise, but are not limited to, sodium ions, potassium ions, chloride ions, fluoride ions, calcium ions, magnesium ions, sulfate ions, nitrate ions, silicon ions, iron ions and aluminum ions, the concentration of the ions in 24 hours does not change under the condition of normal temperature and normal pressure illumination, and the ions are not contained in agents brought into the surrounding environment and added into the system;
said F 0 Only for artificial water replenishment, neglecting the effects of natural conditions including, but not limited to, rain, snow and hail;
said F 1 The circulating water cooling system contains salt substances with the same concentration as the circulating water cooling system, is limited to sewage discharge of the circulating water cooling system, has zero leakage rate, and ignores the influence of phenomena of drifting, splashing and falling and leaking;
said F 2 The water is discharged into the environment in the form of water molecules, including but not limited to evaporation of water surface, evaporation of water on the surface of an object, and is constant under natural conditions;
according to the water balance: f (F) 0 ＝F 1 +F 2 ；
According to the balance of water quality and salt substances: f (F) 0 ＝F 1 ·N+H·N(1-F 0 )；
Finally obtain F 0 ＝N(F 2 -H)·[N(1-H)-1] -1 。
2. The method for determining the water replenishment rate of a circulation system by concentration ratio in the presence of impurity removal according to claim 1, wherein: the F is 2 The value is 0.01-0.02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474608.3A CN111666670B (en) | 2020-05-29 | 2020-05-29 | Method for determining water supplementing rate of circulating system through concentration multiplying power when impurities are removed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474608.3A CN111666670B (en) | 2020-05-29 | 2020-05-29 | Method for determining water supplementing rate of circulating system through concentration multiplying power when impurities are removed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111666670A CN111666670A (en) | 2020-09-15 |
| CN111666670B true CN111666670B (en) | 2023-05-16 |
Family
ID=72385248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010474608.3A Active CN111666670B (en) | 2020-05-29 | 2020-05-29 | Method for determining water supplementing rate of circulating system through concentration multiplying power when impurities are removed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111666670B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0972693A (en) * | 1995-06-26 | 1997-03-18 | Mitsubishi Plastics Ind Ltd | Managing method for cooling tower |
| JP2003269888A (en) * | 2002-03-13 | 2003-09-25 | Kurita Water Ind Ltd | Concentration controlling method for cooling water system |
| CN103307928A (en) * | 2013-06-24 | 2013-09-18 | 神华集团有限责任公司 | Control method of open circulating water cooling system |
| CN106091797A (en) * | 2016-06-21 | 2016-11-09 | 中国神华能源股份有限公司 | Large Copacity circulating cooling water tower mends water discharge method and system |
| CN109931801A (en) * | 2019-03-26 | 2019-06-25 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | A kind of power plant circulating cooling water tower basin automatic water replenishing system and method for supplementing water |
| CN110195619A (en) * | 2019-05-30 | 2019-09-03 | 中国水利水电科学研究院 | Fired power generating unit regulating system, method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030127391A1 (en) * | 2001-07-26 | 2003-07-10 | Craft Frank S. | Method for treatment of circulating cooling water |
-
2020
- 2020-05-29 CN CN202010474608.3A patent/CN111666670B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0972693A (en) * | 1995-06-26 | 1997-03-18 | Mitsubishi Plastics Ind Ltd | Managing method for cooling tower |
| JP2003269888A (en) * | 2002-03-13 | 2003-09-25 | Kurita Water Ind Ltd | Concentration controlling method for cooling water system |
| CN103307928A (en) * | 2013-06-24 | 2013-09-18 | 神华集团有限责任公司 | Control method of open circulating water cooling system |
| CN106091797A (en) * | 2016-06-21 | 2016-11-09 | 中国神华能源股份有限公司 | Large Copacity circulating cooling water tower mends water discharge method and system |
| CN109931801A (en) * | 2019-03-26 | 2019-06-25 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | A kind of power plant circulating cooling water tower basin automatic water replenishing system and method for supplementing water |
| CN110195619A (en) * | 2019-05-30 | 2019-09-03 | 中国水利水电科学研究院 | Fired power generating unit regulating system, method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111666670A (en) | 2020-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106091797B (en) | Large capacity circulating cooling water tower mends water discharge method and system | |
| CN105571073B (en) | A kind of subway station air-conditioner water system frequency conversion control energy-saving method | |
| CN111666670B (en) | Method for determining water supplementing rate of circulating system through concentration multiplying power when impurities are removed | |
| CN101943919B (en) | Method for controlling concentration multiplying power of circulating cooling water and concentration multiplier | |
| CN111664634B (en) | Method for determining circulation system pollution discharge rate through concentration ratio when impurities are removed | |
| CN111680411B (en) | Method for determining pollution discharge rate of circulating water cooling system through temperature concentration ratio | |
| CN111649615B (en) | Method for determining leakage rate of circulating system through concentration ratio when impurities are removed | |
| CN110850831B (en) | Glass substrate production water footprint accounting and online control method | |
| CN111663604A (en) | Method for determining pollution discharge rate of circulating water cooling system through concentration ratio | |
| CN111664633A (en) | Method for determining leakage rate of circulating water cooling system through concentration ratio | |
| CN111649521B (en) | Method for determining water replenishing rate of circulating water cooling system through temperature concentration rate | |
| CN111666669A (en) | Method for determining water replenishing rate of circulating water cooling system through concentration ratio | |
| CN110390430A (en) | A kind of frequency conversion type water circulating pump optimizing operation method avoiding frequent start-stop | |
| CN111618103A (en) | Method for determining leakage rate of circulating water cooling system through temperature concentration rate | |
| CN108167027B (en) | Negative pressure flash steam power generation method in pressurized gasification chilling process | |
| CN205805990U (en) | A kind of equipment of recycling machine sealing liquid | |
| CN112214044B (en) | Circulating water automatic control system and method based on total amount control | |
| CN107883525A (en) | A kind of central air-conditioning intelligence energy-saving operation control system and method | |
| CN101487119A (en) | Metal composite passivation process after boiler cleaning in heat power plant | |
| CN205448459U (en) | Pump station cooling water circulation system | |
| CN206901885U (en) | A kind of cooling water circulation utilization apparatus | |
| CN105549396A (en) | Urban open channel draining system control method based on online dynamic planning | |
| CN221071233U (en) | Water saving device of smelting rolling circulating water system | |
| CN104724879A (en) | Industrial organic wastewater recovery treatment system | |
| CN217377339U (en) | Automatic detection device for machine seal cooling of water treatment equipment |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |