CN113264610A - Wet-type electric dust removal water supply system and water supply method for gas turbine generator set - Google Patents
Wet-type electric dust removal water supply system and water supply method for gas turbine generator set Download PDFInfo
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- CN113264610A CN113264610A CN202110577137.3A CN202110577137A CN113264610A CN 113264610 A CN113264610 A CN 113264610A CN 202110577137 A CN202110577137 A CN 202110577137A CN 113264610 A CN113264610 A CN 113264610A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
- C02F2209/055—Hardness
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/19—SO4-S
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/29—Chlorine compounds
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a wet-type electric precipitation water supply system and a water supply method for a gas turbine generator set, and the water supply system comprises: the system comprises a wet electric precipitator, a wastewater pit, a first water pump, a second water pump, a sewage treatment pool, a third water pump, a third valve and a fourth valve; the method of supplying water is to treat the sewage in the waste water pit and reuse the treated sewage. The invention relates to a wet-type electric precipitation water supply system and a water supply method for a gas turbine generator set, which carry out harmless treatment on sewage discharged by a continuous flushing electrode and then recycle the sewage, reduce the water consumption of industrial purified water, reduce sewage discharge, improve production benefits and protect the natural environment.
Description
Technical Field
The invention belongs to the technical field of energy conservation and environmental protection, and particularly relates to a wet-type electric precipitation water supply system and a water supply method for a gas turbine generator set.
Background
The gas-steam combined cycle power generation set (CCPP for short) is a combined cycle power generation device formed by superposing and combining gas turbine power generation and steam turbine power generation, and has the advantages of high power generation efficiency, low cost, good benefit, cleanness, environmental protection and the like compared with the traditional steam power generation system. The CCPP set widely applied in metallurgical enterprises takes blast furnace gas, a byproduct in blast furnace production, as a main fuel, and the main process flow is as follows: after the blast furnace gas is subjected to dust removal treatment by a wet electric precipitator, the blast furnace gas enters a gas compressor for pressurization and then enters a low-nitrogen combustion chamber for combustion, after the high-temperature and high-pressure flue gas pushes a gas turbine to do work for power generation, the hot flue gas passes through a waste heat boiler to generate steam, and a steam turbine generator set is pushed to generate power.
When the wet electric dust remover works, dust particles captured on the electrodes need to be continuously washed by water, in order to ensure the normal work of the wet electric dust remover, industrial purified water is generally used for washing water, sewage automatically flows to a drainage pit of the wet electric dust remover, and then the sewage is sent out for treatment.
The dust particles captured on the electrode are continuously washed, the water consumption is large, a large amount of water resources are consumed, and the natural environment is seriously influenced by the discharge of a large amount of sewage.
Disclosure of Invention
The invention provides a wet-type electric precipitation water supply system and a water supply method for a gas turbine generator set, and aims to solve the technical problems that: the sewage discharged by the continuous washing electrode is subjected to harmless treatment and then is recycled, so that the water consumption of industrial purified water is reduced, and the sewage discharge is reduced.
In order to achieve the above object, the present invention adopts the following technical solutions.
The water supply system of the present invention includes:
the system comprises a wet electric precipitator, a waste water pit, a first water pump and a second water pump, wherein a spraying port of the wet electric precipitator is communicated with a first valve, and the other end of the first valve is communicated with the second water pump; a water outlet of the wet electric dust collector is communicated to the waste water pit; the water outlet of the first water pump is communicated with a second valve; the sewage treatment device also comprises a sewage treatment pool, a third water pump, a third valve and a fourth valve, wherein the water outlet of the fourth valve is communicated with the first water pump, and the water inlet of the fourth valve is communicated to the interior of the waste water pit; a water inlet of the sewage treatment tank is communicated with a third water pump, a water inlet of the third water pump is communicated to the interior of the waste water pit, and a water outlet of the sewage treatment tank is communicated between the first water pump and the fourth valve; a water inlet of the fourth valve is communicated to the waste water pit; and the water inlet of the third valve is communicated between the first water pump and the second valve, and the water outlet of the third valve is communicated between the first valve and the spraying port of the wet electric dust collector.
The sewage treatment pond is divided into reaction zone, settling zone, clear water district, be equipped with dosing pump, mixer in the reaction zone, be equipped with the pipe chute filler in the settling zone, the clear water district is equipped with the dosing pump.
The communication is a pipe connection.
The water supply method of the invention is to treat and recycle the sewage in the waste water pit, and comprises the following steps:
a) closing the first water pump and the second valve, and storing sewage drained from the drain outlet of the wet electric precipitator in a waste water pit;
b) starting a third water pump, and pumping the sewage in the sewage pit into a reaction area of a sewage treatment pool;
c) adding a pH value regulator into a reaction zone of the sewage treatment tank through a dosing pump, and stirring through a stirrer to ensure that the pH value of the sewage is 6.5-8.0;
d) sequentially adding powdered activated carbon and polyacrylamide into a reaction area of a sewage treatment tank through a dosing pump, and stirring through a stirrer to flocculate fine suspended matters, colloids and the like in sewage into large particles to form alum flocs;
e) opening a communicating valve between the reaction zone and the precipitation zone to enable the sewage in the reaction zone to flow into the precipitation zone;
f) settling the sewage in a settling zone to form supernatant, and automatically flowing the supernatant into a clear water zone;
g) sodium hypochlorite is added at an inlet of the clear water area through a dosing pump to inhibit the growth of bacteria and reduce biological slime;
h) the supernatant in the clear water area is checked to meet the design index;
i) after the clear water in the clear water area rises to a set water level, implementing the conversion of a water supply source, and converting the supply of industrial clear water into the supply of clear water in the clear water area;
j) when the water source of the clear water area is in shortage, the water supply source is switched from the clear water area to industrial clear water;
k) the sludge in the settling zone is discharged through a sludge pump.
The method comprises the steps of switching off the fourth valve, starting the first water pump (the second valve is in an initial closed state), switching on the third valve, and switching off the second water pump and the first valve, so that the clean water in the clean water area enters the spraying port of the wet electric dust collector.
The pH value regulator is NaOH.
The pH value regulator is ammonia water.
The design indexes are that suspended matters are less than or equal to 20mg/L, COD is less than or equal to 150mg/L, and the total number of heterotrophic bacteria is less than or equal to 1x105CFU/mL, hardness less than or equal to 200mg/L, chloride ion less than or equal to 200mg/L, and sulfate radical less than or equal to 200 mg/L.
The invention relates to a wet-type electric precipitation water supply system and a water supply method for a gas turbine generator set, which carry out harmless treatment on sewage discharged by a continuous flushing electrode and then recycle the sewage, reduce the water consumption of industrial purified water, reduce sewage discharge, improve production benefits and protect the natural environment.
Drawings
FIG. 1 is a wet-type electric precipitation water supply system of a raw gas combustion engine generator set.
FIG. 2 is a wet-type electric precipitation water supply system of the gas turbine generator set.
Detailed Description
In order to make the present invention more clear to those skilled in the art, a brief description is first made of a water supply system and a water supply method for wet electric dust collector of a raw gas turbine generator set, as shown in fig. 1, industrial purified water is extracted by a second water pump 4 and enters a spray opening of a wet electric dust collector 1 through a first valve 5, and sewage drained from a drain opening of the wet electric dust collector enters a waste water pit 2, is then extracted by a first water pump 3 and is sent out for treatment through a second valve 6.
The present invention will be described in further detail with reference to the accompanying drawings, as shown in fig. 2, a water supply system according to the present invention includes:
the system comprises a wet electric precipitator 1, a waste water pit 2, a first water pump 3 and a second water pump 4, wherein a spraying port of the wet electric precipitator is communicated with a first valve 5, and the other end of the first valve is communicated with the second water pump; a water outlet of the wet electric dust collector is communicated to the waste water pit; the water outlet of the first water pump is communicated with a second valve 6; the sewage treatment system also comprises a sewage treatment tank 7, a third water pump 8, a third valve 9 and a fourth valve 10, wherein the water outlet of the fourth valve is communicated with the first water pump, and the water inlet of the fourth valve is communicated to the waste water pit; a water inlet of the sewage treatment tank is communicated with a third water pump, a water inlet of the third water pump is communicated to the interior of the waste water pit, and a water outlet of the sewage treatment tank is communicated between the first water pump and the fourth valve; a water inlet of the fourth valve is communicated to the waste water pit; and the water inlet of the third valve is communicated between the first water pump and the second valve, and the water outlet of the third valve is communicated between the first valve and the spraying port of the wet electric dust collector.
Further, the sewage treatment tank is divided into a reaction area 7-1, a precipitation area 7-2 and a clear water area 7-3, a dosing pump and a stirrer are arranged in the reaction area, inclined tube filling materials are arranged in the precipitation area, and the clear water area is provided with a dosing pump.
Further, the communication is a pipe connection.
The water supply method of the invention is to treat and recycle the sewage in the waste water pit, and comprises the following steps:
a) closing the first water pump and the second valve, and storing sewage drained from the drain outlet of the wet electric precipitator in a waste water pit;
b) starting a third water pump, and pumping the sewage in the sewage pit into a reaction area of a sewage treatment pool;
c) adding a pH value regulator into a reaction zone of the sewage treatment tank through a dosing pump, and stirring through a stirrer to ensure that the pH value of the sewage is 6.5-8.0;
d) sequentially adding Powdered Activated Carbon (PAC) and Polyacrylamide (PAM) into a reaction zone of a sewage treatment tank through a dosing pump, and stirring through a stirrer to flocculate fine suspended matters, colloids and the like in sewage into large particles to form alum flocs;
e) opening a communicating valve between the reaction zone and the precipitation zone to enable the sewage in the reaction zone to flow into the precipitation zone;
f) settling the sewage in a settling zone to form supernatant, and automatically flowing the supernatant into a clear water zone;
g) sodium hypochlorite is added at an inlet of the clear water area through a dosing pump to inhibit the growth of bacteria and reduce biological slime;
h) the supernatant in the clear water area is checked to meet the design index;
i) after the clear water in the clear water area rises to a set water level, implementing the conversion of a water supply source, and converting the supply of industrial clear water into the supply of clear water in the clear water area;
j) when the water source of the clear water area is in shortage, the water supply source is switched from the clear water area to industrial clear water;
k) the sludge in the settling zone is discharged through a sludge pump.
Further, the step of converting the supply of the industrial clean water into the supply of the clean water in the clean water area is to close the fourth valve, start the first water pump, (the second valve is in an initial closed state), open the third valve, close the second water pump and the first valve, and enable the clean water in the clean water area to enter the spraying port of the wet-type electric dust collector.
Further, the pH value regulator is NaOH.
Further, the pH value regulator is ammonia water.
Furthermore, the design indexes are that suspended matters are less than or equal to 20mg/L, COD is less than or equal to 150mg/L, and the total number of heterotrophic bacteria is less than or equal to 1x105CFU/mL, hardness less than or equal to 200mg/L, chloride ion less than or equal to 200mg/L, and sulfate radical less than or equal to 200 mg/L.
The invention relates to a wet-type electric precipitation water supply system and a water supply method for a gas turbine generator set, which carry out harmless treatment on sewage discharged by a continuous flushing electrode and then recycle the sewage, reduce the water consumption of industrial purified water, reduce sewage discharge, improve production benefits and protect the natural environment.
Claims (8)
1. A wet-type electric precipitation water supply system of a gas turbine generator set comprises a wet-type electric precipitator (1), a waste water pit (2), a first water pump (3) and a second water pump (4), wherein a spraying opening of the wet-type electric precipitator is communicated with a first valve (5), and the other end of the first valve is communicated with the second water pump; a water outlet of the wet electric dust collector is communicated to the waste water pit; the water outlet of the first water pump is communicated with a second valve (6); the method is characterized in that:
the sewage treatment system also comprises a sewage treatment pool (7), a third water pump (8), a third valve (9) and a fourth valve (10), wherein the water outlet of the fourth valve is communicated with the first water pump, and the water inlet of the fourth valve is communicated to the interior of the waste water pit; a water inlet of the sewage treatment tank is communicated with a third water pump, a water inlet of the third water pump is communicated to the interior of the waste water pit, and a water outlet of the sewage treatment tank is communicated between the first water pump and the fourth valve; a water inlet of the fourth valve is communicated to the waste water pit; and the water inlet of the third valve is communicated between the first water pump and the second valve, and the water outlet of the third valve is communicated between the first valve and the spraying port of the wet electric dust collector.
2. The wet-type electric precipitation water supply system of the gas turbine generator set according to claim 1, characterized in that: the sewage treatment tank is divided into a reaction area (7-1), a settling area (7-2) and a clear water area (7-3), a dosing pump and a stirring machine are arranged in the reaction area, inclined tube filling materials are arranged in the settling area, and the clear water area is provided with the dosing pump.
3. The wet-type electric precipitation water supply system of the gas turbine generator set as claimed in claim 2, characterized in that: the communication is a pipe connection.
4. The water supply method of the wet-type electric precipitation water supply system of the gas turbine generator set is characterized in that sewage in a waste water pit is treated and then recycled, and the method specifically comprises the following steps:
a) closing the first water pump and the second valve, and storing sewage drained from the drain outlet of the wet electric precipitator in a waste water pit;
b) starting a third water pump, and pumping the sewage in the sewage pit into a reaction area of a sewage treatment pool;
c) adding a pH value regulator into a reaction zone of the sewage treatment tank through a dosing pump, and stirring through a stirrer to ensure that the pH value of the sewage is 6.5-8.0;
d) sequentially adding powdered activated carbon and polyacrylamide into a reaction area of a sewage treatment tank through a dosing pump, and stirring through a stirrer to flocculate fine suspended matters, colloids and the like in sewage into large particles to form alum flocs;
e) opening a communicating valve between the reaction zone and the precipitation zone to enable the sewage in the reaction zone to flow into the precipitation zone;
f) settling the sewage in a settling zone to form supernatant, and automatically flowing the supernatant into a clear water zone;
g) sodium hypochlorite is added at an inlet of the clear water area through a dosing pump to inhibit the growth of bacteria and reduce biological slime;
h) the supernatant in the clear water area is checked to meet the design index;
i) after the clear water in the clear water area rises to a set water level, implementing the conversion of a water supply source, and converting the supply of industrial clear water into the supply of clear water in the clear water area;
j) when the water source of the clear water area is in shortage, the water supply source is switched from the clear water area to industrial clear water;
k) the sludge in the settling zone is discharged through a sludge pump.
5. The water supply method according to claim 4, characterized in that: the method comprises the steps of switching off the fourth valve, starting the first water pump, opening the third valve, and switching off the second water pump and the first valve to enable the clean water in the clean water area to enter the spraying port of the wet-type electric dust collector.
6. The water supply method according to claim 4, characterized in that: the pH value regulator is NaOH.
7. The water supply method according to claim 4, characterized in that: the pH value regulator is ammonia water.
8. The water supply method according to claim 5, 6 or 7, characterized in that: the design indexes are that suspended matters are less than or equal to 20mg/L, COD is less than or equal to 150mg/L, and the total number of heterotrophic bacteria is less than or equal to 1x105CFU/mL, hardness less than or equal to 200mg/L, chloride ion less than or equal to 200mg/L, and sulfate radical less than or equal to 200 mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110577137.3A CN113264610A (en) | 2021-05-26 | 2021-05-26 | Wet-type electric dust removal water supply system and water supply method for gas turbine generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110577137.3A CN113264610A (en) | 2021-05-26 | 2021-05-26 | Wet-type electric dust removal water supply system and water supply method for gas turbine generator set |
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| CN113264610A true CN113264610A (en) | 2021-08-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11207146A (en) * | 1997-11-17 | 1999-08-03 | Japan Organo Co Ltd | Method for recovering gypsum from flue gas desulfurization wastewater |
| CN1245146A (en) * | 1999-07-30 | 2000-02-23 | 山西省科林环境保护技术中心 | Process for treating waste water |
| CN1594143A (en) * | 2004-06-24 | 2005-03-16 | 武汉化工学院 | Treatment method for gas wash water |
| CN103508590A (en) * | 2013-10-13 | 2014-01-15 | 陕西盛迈石油有限公司 | Blast furnace gas washing circulating water system |
| CN104874481A (en) * | 2015-06-26 | 2015-09-02 | 浙江中泰环保股份有限公司 | Wet type electrostatic dust collector for semidry method (CFB) waste water zero discharging |
-
2021
- 2021-05-26 CN CN202110577137.3A patent/CN113264610A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11207146A (en) * | 1997-11-17 | 1999-08-03 | Japan Organo Co Ltd | Method for recovering gypsum from flue gas desulfurization wastewater |
| CN1245146A (en) * | 1999-07-30 | 2000-02-23 | 山西省科林环境保护技术中心 | Process for treating waste water |
| CN1594143A (en) * | 2004-06-24 | 2005-03-16 | 武汉化工学院 | Treatment method for gas wash water |
| CN103508590A (en) * | 2013-10-13 | 2014-01-15 | 陕西盛迈石油有限公司 | Blast furnace gas washing circulating water system |
| CN104874481A (en) * | 2015-06-26 | 2015-09-02 | 浙江中泰环保股份有限公司 | Wet type electrostatic dust collector for semidry method (CFB) waste water zero discharging |
Non-Patent Citations (1)
| Title |
|---|
| 刘智安: "《工业循环冷却水处理》", 30 September 2017, 中国轻工业出版社 * |
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Application publication date: 20210817 |