CN112062325A - Unit operation cost statistical method and device of chemical demineralized water treatment system - Google Patents

Unit operation cost statistical method and device of chemical demineralized water treatment system Download PDF

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CN112062325A
CN112062325A CN202010771797.0A CN202010771797A CN112062325A CN 112062325 A CN112062325 A CN 112062325A CN 202010771797 A CN202010771797 A CN 202010771797A CN 112062325 A CN112062325 A CN 112062325A
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cost
water
electric quantity
unit operation
calculating
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CN112062325B (en
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任资龙
刘智辉
张宇
周宏贵
胡蓉
刘俊峰
杨建慧
牛晓龙
程强
孙超
黄振宇
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Datang Beijing Water Engineering Technology Co ltd
Datang Gongyi Power Generation Co ltd
Hunan Datang Xianyi Technology Co ltd
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Datang Beijing Water Engineering Technology Co ltd
Datang Gongyi Power Generation Co ltd
Hunan Datang Xianyi Technology 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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • G06Q30/0201—Market modelling; Market analysis; Collecting market data
    • G06Q30/0206—Price or cost determination based on market factors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Electricity, gas or water supply
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • G06Q50/26—Government or public services
    • 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
    • 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
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • 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
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

Abstract

The invention discloses a unit operation cost statistical method and a unit operation cost statistical device for a chemical demineralized water treatment system, which can realize real-time calculation of the chemical demineralized water treatment system and effectively solve the problem that the current manual statistical result is seriously lagged; the operation costs of a computer pool, an ultrafiltration device, a reverse osmosis device, a primary desalting device and a mixed bed unit can be respectively calculated, the cost analysis of the whole process of chemical desalting water can be realized, and data support is provided for the analysis of operation cost change of chemical engineering and the comparison of the quality of medicaments of different manufacturers; the electric quantity cost is calculated by adopting the electric quantity sharing coefficient, so that the accuracy of the calculation result is ensured; the running state of each device is judged in real time, and the accuracy of each cost statistic is ensured.

Description

Unit operation cost statistical method and device of chemical demineralized water treatment system
Technical Field
The invention relates to the technical field of coal-fired power plants, in particular to a unit operation cost statistical method and a unit operation cost statistical device for a chemical demineralized water treatment system.
Background
In order to meet the new requirements of environmental protection, energy conservation and emission reduction and reduce investment and operation cost, a new mode, namely a water island EPC construction mode (called a water island for short), appears in the construction of a water treatment system of a coal-fired power plant. As shown in fig. 1, the water island mainly comprises a chemical demineralized water treatment system, a circulating water treatment system, a condensed water fine treatment system and a sewage and wastewater treatment system, wherein the chemical demineralized water treatment system is structurally shown in fig. 2. In the water island construction mode, multiple water-in-one arrangement of make-up water, circulating water, sewage and wastewater and the like is adopted, and links of water supply, water consumption, water drainage recycling and the like of a power plant are comprehensively planned comprehensively and comprehensively, so that the aims of less water taking, energy saving and zero wastewater discharge are fulfilled.
The main purposes of strengthening water management and improving the operation economy of a water treatment system for thermal power enterprises are water island construction, and the preparation of demineralized water is the main cost expenditure of a water island, so that the real-time calculation of the unit operation cost of the demineralized water and the analysis of the change trend of the unit operation cost of the demineralized water are important means for analyzing the operation economy of the water island. The traditional calculation of unit operation cost of demineralized water has the following disadvantages and is not suitable for the construction characteristics and purposes of the water island:
(1) the unit operation cost of various processing apparatus in the chemical demineralized water processing system in the water island can not be counted respectively to traditional statistical methods, and the unit operation cost of various processing apparatus in the chemical demineralized water processing system can provide reliable data support for the economic nature analysis of water island operation.
(2) The traditional statistical method adopts manual statistics, the statistics is carried out according to months or years, the result is delayed, and the real change condition of the unit operation cost of the desalted water cannot be reflected;
(3) in the existing water island, based on the consideration of investment cost, only one electric meter (intelligent electric meter) is usually put into the water island and covers the power consumption of systems for chemical desalination water treatment, circulating water treatment, condensed water treatment, sewage and wastewater treatment and the like, the traditional statistical method defaults that all the electric pumps of each system are in an operating state, and a method of calculating a fixed empirical coefficient by adopting the rated power of the electric pumps of the chemical desalination water treatment system and/or the sum of the rated power of the electric pumps of each system of the water island is adopted to calculate the power consumption of the chemical desalination water treatment system in a statistical period.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a unit operation cost statistical method and a unit operation cost statistical device for a chemical demineralized water treatment system.
The invention provides a unit operation cost statistical method of a chemical demineralized water treatment system, which is suitable for a water island system and comprises the following steps:
judging the running states of various treatment devices in the chemical desalted water treatment system, wherein the treatment devices comprise a machining pool, an ultrafiltration device, a reverse osmosis device, a primary desalting device and a mixed bed;
periodically acquiring flow parameters and electric quantity parameters of each processing device in a non-stop state, wherein the flow parameters comprise water inflow, medicament consumption, cleaning water consumption and water making amount; the electric quantity parameter comprises the electric power consumption of various processing devices, and the acquisition process of the electric power consumption comprises the following steps: collecting the sum of rated power consumption of running electric pumps corresponding to each processing device and the sum of rated power consumption of running electric pumps of the water island system, calculating the ratio of the sum of rated power consumption of the running electric pumps to the sum of rated power consumption of the running electric pumps of the water island system to obtain an electric quantity sharing coefficient corresponding to each processing device, and calculating the power consumption corresponding to each processing device according to the electric quantity sharing coefficient and the statistical electric quantity of an electric meter;
and calculating the unit operation cost of each processing device in the period according to the flow parameter, the electric quantity parameter and the corresponding cost unit price of each processing device.
In a second aspect of the present invention, there is provided a unit operation cost statistic device for a chemical desalted water treatment system, which is suitable for a water island system, and comprises: a parameter acquisition unit and a cost calculation unit;
the parameter acquisition unit is used for judging the running states of various treatment devices in the chemical desalted water treatment system, and the treatment devices comprise a machining pool, an ultrafiltration device, a reverse osmosis device, a primary desalting device and a mixed bed; the method comprises the steps of periodically acquiring flow parameters and electric quantity parameters of each processing device in a non-stop state, wherein the flow parameters comprise water inflow, medicament consumption, cleaning water consumption and water making amount; the electric quantity parameter comprises the electric power consumption of various processing devices, and the acquisition process of the electric power consumption comprises the following steps: collecting the sum of rated power consumption of running electric pumps corresponding to each processing device and the sum of rated power consumption of running electric pumps of the water island system, calculating the ratio of the sum of rated power consumption of the running electric pumps to the sum of rated power consumption of the running electric pumps of the water island system to obtain an electric quantity sharing coefficient corresponding to each processing device, and calculating the power consumption corresponding to each processing device according to the electric quantity sharing coefficient and the statistical electric quantity of an electric meter;
the cost calculation unit is used for calculating the unit operation cost of each processing device in a period according to the flow parameter, the electric quantity parameter and the corresponding cost unit price of each processing device.
In a third aspect of the present invention, a unit operation cost statistic device for a chemical desalted water treatment system is provided, which comprises at least one control processor and a memory for communication connection with the at least one control processor; the memory stores instructions executable by the at least one control processor to enable the at least one control processor to perform a statistical method of unit operating cost of a chemical desalinated water processing system according to the first aspect of the present invention.
In a fourth aspect of the present invention, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform a statistical method of unit operating costs of a chemical desalinated water processing system according to the first aspect of the present invention.
According to some embodiments of the invention, at least the following benefits are achieved:
(1) the unit running cost of all kinds of processing apparatus in the chemical demineralized water processing system can independently calculate, realize the cost analysis that becomes more meticulous of chemical demineralized water system, provide data support for chemical industry analysis running cost change and different producer's medicament quality contrast.
(2) The real-time calculation of the chemical demineralized water treatment system is realized, and the problem that the manual statistical result is seriously lagged at present is effectively solved;
(3) the electric quantity cost is calculated by adopting the electric quantity sharing coefficient, so that the accuracy of a calculation result is ensured; the running state of each device is judged in real time, and the accuracy of each cost statistic is ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an EPC construction model of a water island provided in the prior art;
FIG. 2 is a schematic diagram of a prior art chemical desalinated water treatment system;
FIG. 3 is a schematic flow chart illustrating a statistical method for unit operation cost of a chemical desalted water treatment system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a calculation process of unit operation cost of an machined pool according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a calculation process of unit operation cost of the ultrafiltration device according to the embodiment of the present invention;
FIG. 6 is a schematic flow chart of the calculation of the unit operation cost of the reverse osmosis device provided by the embodiment of the invention;
FIG. 7 is a schematic view of a calculation process of unit operation cost of the primary desalination apparatus according to the embodiment of the present invention;
FIG. 8 is a schematic view of a calculation process of unit operation cost of a mixed bed according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a unit operation cost statistic device of a chemical desalted water treatment system according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a unit operation cost statistic device of a chemical demineralized water treatment system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Referring to fig. 3 to 8, in one embodiment of the present invention, a unit operation cost statistical method for a chemical demineralized water treatment system is provided, which includes the following steps:
s100, judging the running states of various processing devices in the chemical desalted water processing system;
s200, periodically acquiring flow parameters and electric quantity parameters of each processing device in a non-stop state, wherein the flow parameters comprise water inflow, medicament consumption, cleaning water consumption and water making amount; the electric quantity parameter includes the power consumption of all kinds of processing apparatus, and the collection process of power consumption includes: acquiring the sum of rated power consumption of running electric pumps corresponding to each processing device and the sum of rated power consumption of running electric pumps of the water island system, calculating the ratio of the sum of rated power consumption of running electric pumps to the sum of rated power consumption of running electric pumps of the water island system to obtain an electric quantity sharing coefficient corresponding to each processing device, and calculating to obtain the power consumption corresponding to each processing device according to the electric quantity sharing coefficient and the statistical electric quantity of an electric meter;
and S300, calculating the unit operation cost of each processing device in the period according to the flow parameter, the electric quantity parameter and the corresponding cost unit price of each processing device.
Specifically, various treatment devices in the chemical desalted water treatment system comprise a machining pool, an ultrafiltration device, a reverse osmosis device, a primary desalting device and a mixed bed. As shown in figure 2, the chemical desalting water treatment system sequentially comprises a machining pool, an ultrafiltration device, a reverse osmosis device, a primary desalting device and a mixed bed. The chemical operation cost calculation formula is as follows:
C＝Cw+Ce+Cc+Cr (1)
wherein C represents the chemical operating cost; cwRepresents the cost of water intake; ceRepresenting cost of electricity；CcRepresents the cost of the medicament; crRepresenting the cost of the wash water.
Specifically, the running costs of the machining pond, the ultrafiltration device and the reverse osmosis device comprise the water inlet cost, the electric quantity cost and the medicament cost; the operation cost of the primary desalting device and the mixed bed mainly comprises water inlet cost, electric quantity cost, medicament cost and cleaning water cost.
The machine-adding pool, the ultrafiltration device and the reverse osmosis device have two states of running and stopping running, and the primary desalting device and the mixed bed have three states of running, stopping running and regenerating. The running and stopping states are judged according to the inflow, and the regeneration state is jointly judged according to the inflow and the medicament flow.
The water inlet cost, the electric quantity cost and the medicament cost of the machining pool, the ultrafiltration device and the reverse osmosis device are generated only in the operation stage, and the unit operation cost is kept unchanged in the shutdown stage after the unit operation cost of the last calculation period before shutdown. The water inlet cost and the electric quantity cost of the primary desalting device and the mixed bed are generated only in the operation stage, the medicament cost and the cleaning water cost are generated in the regeneration stage, and the unit operation cost of the last calculation period before the shutdown stage and the regeneration stage is maintained to be unchanged.
In this embodiment, the water intake cost calculation formula is as follows:
Mw＝∑Qw*Ti (2)
Cw＝Mw*pw (3)
wherein M iswThe water inflow is represented and accumulated by the water inflow; qwRepresenting the inflow rate of water; t isiRepresents a calculation cycle;
pwrepresenting the unit price of water entry.
In this embodiment, a method for calculating the electric power sharing coefficient is provided to calculate the electric power consumption of the feeding tank, the ultrafiltration device, the reverse osmosis device, the primary device and the mixed bed. The electric quantity sharing coefficient is as follows: and calculating the ratio of the sum of the rated power consumption of the electric pumps operated by the corresponding devices to the sum of the rated power consumption of the electric pumps operated in the water island range. The running and shutdown states of the electric pump are judged according to the current of the electric pump. The electric quantity sharing coefficient calculation formula is as follows:
Figure BDA0002616923090000071
Ce＝ηe*ΔW*pe (5)
wherein eta iseRepresenting an electric quantity sharing coefficient; pkRepresenting the rated power of the electric pump operated by the computing device; t iskRepresenting the computing device calculating the periodic electric pump running time; pjThe rated power of the electric pump which runs in the water island range is represented, and the rated power of the electric pump which runs comprises a chemical desalting water treatment system, a circulating water treatment system, a condensed water fine treatment system and a sewage and wastewater treatment system; t isjRepresenting the operation time of the electric pump in the calculation period in the range of the water island; the delta W represents the statistical electric quantity of the electric meter, and the electric meter is used in the water island; p is a radical ofeRepresenting the unit price of electricity purchase; ceRepresenting the cost of electricity.
In this embodiment, the consumption of the pharmaceutical agent is calculated according to the frequency change of the variable frequency metering pump, and the pharmaceutical cost is calculated by combining the pharmaceutical unit price, the pharmaceutical density, the pharmaceutical concentration, and the pharmaceutical metering pump rated flow, and the calculation formula is as follows:
Qci＝fci*Qri/fri (6)
Mci＝∑Qci*ρi*ωci*Ti (7)
Cc＝Mci*pri (8)
Qcirepresenting the actual flow of the metering pump; f. ofciRepresenting the actual frequency of the metering pump; qriRepresenting the rated flow of the metering pump; f. ofriRepresenting the rated frequency of the metering pump; mciRepresents the amount of drug consumption; rhoiRepresents the density of the agent; omegaciRepresents the concentration of the agent; p is a radical ofriRepresents a unit price of the agent; ccRepresenting the cost of the medicament.
In this embodiment, the cost of the wash water is generated by the first desalination unit and the mixed bed during the regeneration stage, the wash water is from the desalted water tank, the amount of the wash water is integrated by the flow rate of the wash water, and the cost of the wash water is calculated as follows:
Mr＝∑Qr*Ti (9)
Cr＝Mr*pr (10)
wherein M isrThe washing water amount is represented and is accumulated by the washing water flow; qrRepresents the flow rate of the washing water consumed in the regeneration stage; p is a radical ofrThe unit price of cleaning water is expressed and is the unit operation cost of desalted water in the regeneration stage; crRepresenting the cost of the wash water.
In the present example, the unit operation cost of demineralized water means the operation cost required for preparing one ton of demineralized water.
In this embodiment, the acquired water island operation data includes real-time inflow rate (t/h), real-time water production rate (t/h), frequency of the chemical metering pump (Hz), electric pump current (a), electric meter count (kWh), and real-time cleaning water flow rate (t/h). The manually recorded data comprises the unit price of outsourcing raw water (yuan/t), the unit price of electricity purchasing (yuan/kWh), the unit price of medicament (yuan/t), the medicament density (kg/m3), the medicament concentration (%), the rated frequency (Hz) of the medicament metering pump, the rated flow (t/h) of the medicament metering pump and the rated power (kW) of the chemical electric pump.
The unit running cost of the computer adding pool, the ultrafiltration device, the reverse osmosis device, the primary desalting device and the mixed bed is calculated in sequence.
(1) Unit operation cost of the machining pool:
the electric quantity cost is the cost generated by the operation of a machine-added pool stirrer, a double-chamber filter backwashing roots blower, a make-up water clear water pump, a double-chamber filter backwashing water pump, an activated carbon filter backwashing water pump, a circulating water treatment self-using water pump, a recovery water pump, a lime milk pump and a concentration pool sludge discharge conveying pump; the cost of the agent is the cost generated by consuming 85 percent of lime powder, 98 percent of sulfuric acid, polymeric ferric sulfate and circulating water coagulant aid; the water inflow comprises the purchased raw water quantity and the recovered water quantity, and the water making quantity comprises the water quantity flowing to the cooling tower and the water quantity flowing to the ultrafiltration device. The calculation formula is as follows:
Figure BDA0002616923090000081
wherein p isjRepresenting the unit operation cost of the machine-added pool; mysRepresenting the amount of outsourcing raw water; mhsRepresenting the amount of recovered water; p is a radical ofysRepresenting the unit price of water purchase; cejRepresenting the cost of electric quantity consumed by an electric pump operated by the mechanical-mechanical pool, wherein the cost is equal to the product of the electric quantity apportionment coefficient of the mechanical-mechanical pool and the statistical electric quantity of the electric meter and the electricity purchasing unit price; ccjRepresenting the cost of the machine-added pool agent; muRepresenting the amount of produced water flowing to the ultrafiltration device; mlstIndicating the amount of water produced to the cooling tower.
According to the collected data and the manually input data of the water island operation of a certain 600MW unit, the operation cost of a computer pool unit is shown as the following table:
Figure BDA0002616923090000091
TABLE 1
(2) Unit operating cost of ultrafiltration device:
the electricity cost is the cost generated by the running of an ultrafiltration effluent booster pump, an ultrafiltration backwashing water pump and an ultrafiltration cleaning water pump; the cost of the agent is the cost generated by the consumption of the bactericide; the water inflow comes from the water production amount of the mechanical adding pool. The calculation formula is as follows:
Figure BDA0002616923090000101
wherein p isuRepresents the unit operation cost of the ultrafiltration device; ceuThe cost of the electric quantity consumed by the electric pump operated by the ultrafiltration device is represented and is equal to the product of the electric quantity apportionment coefficient of the ultrafiltration device and the electric quantity counted by the electric meter and the electricity purchasing unit price; ccuRepresents the medicament cost of the ultrafiltration device; mrIndicating the amount of water produced to the reverse osmosis unit.
According to the collected data and the manually input data of the water island operation of a certain 600MW unit, the unit operation cost of the ultrafiltration device is calculated as shown in the following table:
Figure BDA0002616923090000102
TABLE 2
(3) Unit operating cost of reverse osmosis unit:
the electricity cost is the cost generated by the operation of the reverse osmosis high-pressure pump, the fresh water pump and the reverse osmosis flushing water pump; the cost of the agent is the cost generated by consumption of the reducing agent and the scale inhibitor; the water inflow comes from the water making amount of the ultrafiltration device.
The reverse osmosis device has the following calculation formula of unit operation cost:
Figure BDA0002616923090000103
wherein p isrRepresents the unit operation cost of the reverse osmosis device; cerThe cost of the electric quantity consumed by the reverse osmosis device when the electric pump is operated is represented and is equal to the product of the electric quantity apportionment coefficient of the reverse osmosis device and the electric quantity counted by the electric meter and the electricity purchasing unit price; ccrRepresents the medicament cost of the reverse osmosis device; mfRepresenting the amount of produced water flowing to the primary demineralizer.
According to the collected data and the manually input data of the water island operation of a certain 600MW unit, the unit operation cost of the reverse osmosis device is calculated as follows:
Figure BDA0002616923090000111
TABLE 3
(4) Unit operation cost of the primary desalting device:
the electric quantity cost is the cost generated by the running of a demineralized water pump, a water treatment wastewater delivery pump, an acid-base regeneration pump and a desalting self-use water pump; the cost of the agent is the cost generated by consuming 31 percent HCl and 40 percent NaOH; the water inflow comes from the water production amount of the reverse osmosis device.
The unit operation cost calculation formula of the primary desalting device is as follows:
Figure BDA0002616923090000112
wherein p isfRepresenting the unit operation cost of the primary desalting device; cefThe cost of the electric quantity consumed by the operation of the electric pump of the primary desalting device is represented and is equal to the product of the electric quantity apportionment coefficient of the primary desalting device and the statistical electric quantity and the electricity purchasing unit price of the electric meter; ccfRepresenting the medicament cost of a primary desalting device; crfRepresents the cost of cleaning water of a primary desalting plant; mhRepresenting the amount of water produced flowing to the mixed bed; sigma MhRepresents the total water production of the primary desalter after regeneration.
According to the collected data of the water island operation of a certain 600MW unit and the manually input data, the unit operation cost of the primary desalting device is calculated as shown in the following table:
Figure BDA0002616923090000121
TABLE 4
(5) Unit operating cost of mixed bed (i.e. unit operating cost of demineralized water):
the electric quantity cost is the cost generated by the running of a demineralized water pump, a water treatment wastewater delivery pump, an acid-base regeneration pump and a desalting self-use water pump; the cost of the agent is the cost generated by consuming 31 percent HCl and 40 percent NaOH; the water inflow comes from the water making amount of the primary desalting device;
the calculation formula of the unit operation cost of the mixed bed is as follows:
Figure BDA0002616923090000122
wherein p ishRepresenting the unit operation cost of the mixed bed; cehThe cost of the electric quantity consumed by the electric pump for the operation of the mixed bed is expressed and is equal to the product of the electric quantity apportionment coefficient of the mixed bed and the statistical electric quantity and the electricity purchasing unit price of the electric meter; cchRepresents the cost of the mixed bed medicament; crhRepresents the mixed bed cleaning water cost; mcRepresenting the amount of produced water flowing to the demineralized water tank; sigma McRepresents the total amount of water produced by the mixed bed after regeneration.
According to the collected data and the manually input data of the water island operation of a certain 600MW unit, the operation cost of the mixed bed unit is calculated as shown in the following table:
Figure BDA0002616923090000131
TABLE 5
The method provided by the invention has the following beneficial effects:
(1) the real-time calculation of the chemical desalted water treatment system can be realized, and the problem that the manual statistical result is seriously lagged at present is effectively solved;
(2) the operation costs of a computer added pool, an ultrafiltration device, a reverse osmosis device, a primary desalting device and a mixed bed unit are respectively calculated, so that the cost analysis of the whole process of chemical desalting water can be realized, and data support is provided for the analysis of operation cost change of chemical engineering and the comparison of the quality of medicaments of different manufacturers;
(3) the electric quantity cost is calculated by adopting the electric quantity sharing coefficient, so that the accuracy of a calculation result is ensured; the running state of each device is judged in real time, and the accuracy of each cost statistic is ensured.
Referring to fig. 9, an embodiment of the present invention provides a unit operation cost statistic device for a chemical desalted water treatment system, including: a parameter acquisition unit and a cost calculation unit;
the parameter acquisition unit is used for judging the running states of various treatment devices in the chemical desalted water treatment system, and the treatment devices comprise a machining pool, an ultrafiltration device, a reverse osmosis device, a primary desalting device and a mixed bed; periodically acquiring flow parameters and electric quantity parameters of each processing device in a non-stop state, wherein the flow parameters comprise water inflow, medicament consumption, cleaning water consumption and water making amount; the electric quantity parameter includes the power consumption of all kinds of processing apparatus, and the collection process of power consumption includes: acquiring the sum of rated power consumption of running electric pumps corresponding to each processing device and the sum of rated power consumption of running electric pumps of the water island system, calculating the ratio of the sum of rated power consumption of running electric pumps to the sum of rated power consumption of running electric pumps of the water island system to obtain an electric quantity sharing coefficient corresponding to each processing device, and calculating to obtain the power consumption corresponding to each processing device according to the electric quantity sharing coefficient and the statistical electric quantity of an electric meter;
the cost calculation unit is used for calculating the unit operation cost of each processing device in the period according to the flow parameter, the electric quantity parameter and the corresponding cost unit price of each processing device.
It should be noted that, since the unit operation cost statistical method of the apparatus in the embodiment and the chemical desalted water treatment system is based on the same inventive concept, the corresponding content in the method embodiment is also applicable to the embodiment of the apparatus, and is not described in detail herein.
Referring to fig. 10, an embodiment of the present invention further provides a unit operation cost statistic device of a chemical desalted water treatment system, which may be any type of intelligent terminal, such as a mobile phone, a tablet computer, a personal computer, and the like.
Specifically, the apparatus includes: one or more control processors and memory, one control processor being exemplified in fig. 10. The control processor and the memory may be connected by a bus or other means, as exemplified by the bus connection in fig. 10.
The memory, as a non-transitory computer readable storage medium, may be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the unit operation cost statistics apparatus of the chemical desalination treatment system in the embodiments of the present invention. The control processor executes various functional applications and data processing of the unit operation cost statistic device of the chemical demineralized water treatment system by operating the non-transitory software program, the instructions and the modules stored in the memory, namely, the unit operation cost statistic method of the chemical demineralized water treatment system of the embodiment of the method is realized.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to usage of a unit operation cost statistic device of the chemical-desalination water treatment system, and the like. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory remotely located from the control processor, and the remote memory may be connected to the unit operating cost statistics facility of the chemical-desalination treatment system via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory and, when executed by the one or more control processors, perform the statistical method of unit operating cost of the chemical-desalination treatment system in the above-described method embodiments, e.g., performing the above-described method steps S100-S300 in fig. 3.
Embodiments of the present invention also provide a computer-readable storage medium storing computer-executable instructions for execution by one or more control processors, for example, one of the control processors of fig. 10, to cause the one or more control processors to perform the statistical method for unit operation cost of a chemical desalinated water processing system in the above-described method embodiments, for example, to perform the above-described method steps S100 to S300 of fig. 3.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be implemented by software plus a general hardware platform. Those skilled in the art will appreciate that all or part of the processes of the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read Only Memory (ROM), a Random Access Memory (RAM), or the like.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A statistical method for unit operation cost of a chemical demineralized water treatment system is characterized by being applicable to a water island system and comprising the following steps:
judging the running states of various treatment devices in the chemical desalted water treatment system, wherein the treatment devices comprise a machining pool, an ultrafiltration device, a reverse osmosis device, a primary desalting device and a mixed bed;
periodically acquiring flow parameters and electric quantity parameters of each processing device in a non-stop state, wherein the flow parameters comprise water inflow, medicament consumption, cleaning water consumption and water making amount; the electric quantity parameter comprises the electric power consumption of various processing devices, and the acquisition process of the electric power consumption comprises the following steps: collecting the sum of rated power consumption of running electric pumps corresponding to each processing device and the sum of rated power consumption of running electric pumps of the water island system, calculating the ratio of the sum of rated power consumption of the running electric pumps to the sum of rated power consumption of the running electric pumps of the water island system to obtain an electric quantity sharing coefficient corresponding to each processing device, and calculating the power consumption corresponding to each processing device according to the electric quantity sharing coefficient and the statistical electric quantity of an electric meter;
and calculating the unit operation cost of each processing device in the period according to the flow parameter, the electric quantity parameter and the corresponding cost unit price of each processing device.
2. The statistical method for unit operation cost of chemical demineralized water treatment system according to claim 1, wherein the unit operation cost of computer plus pool includes:
the computer adds the pool mixer, the double-chamber filter backwash roots blower, make-up water clear water pump, the double-chamber filter backwash water pump, the activated carbon filter backwash water pump, the circulating water treatment self-using water pump, the recycle water pump, the lime breast pump, the concentration tank mud-discharging delivery pump operates the electric quantity cost that produces, and consume 85% lime powder, 98% sulfuric acid, polyferric sulfate, circulating water coagulant aid produce the medicament cost, and the cost of intaking;
and calculating to obtain the unit operation cost of the computer-added pool according to the electric quantity cost, the medicament cost, the water inlet cost and the water making amount of the computer-added pool.
3. The statistical method for unit operation cost of chemical desalted water treatment system as claimed in claim 1, wherein calculating unit operation cost of ultrafiltration device comprises:
calculating the electricity cost generated by the operation of the ultrafiltration water outlet booster pump, the ultrafiltration backwashing water pump and the ultrafiltration cleaning water pump, the medicament cost generated by the consumption of the bactericide and the water inlet cost;
and calculating the unit operation cost of the ultrafiltration device according to the electric quantity cost, the medicament cost, the water inlet cost and the water making amount of the ultrafiltration device.
4. The statistical method for unit operation cost of chemical desalted water treatment system as claimed in claim 1, wherein calculating unit operation cost of reverse osmosis device comprises:
calculating the cost of electricity generated by the operation of a reverse osmosis high-pressure pump, a fresh water pump and a reverse osmosis flushing water pump, the cost of chemicals generated by consumption of reducing agents and scale inhibitors and the cost of water inlet;
and calculating the unit operation cost of the reverse osmosis device according to the electric quantity cost, the medicament cost, the water inlet cost and the water making quantity of the reverse osmosis device.
5. The statistical method for unit operation cost of chemical desalted water treatment system as claimed in claim 1, wherein calculating the unit operation cost of the primary desalter comprises:
calculating the cost of electric quantity generated by the operation of a desalting water pump, a water treatment wastewater delivery pump, an acid-base regeneration pump and a desalting self-use water pump, the cost of medicaments generated by consumption of 31 percent of HCl and 40 percent of NaOH, the cost of water inlet and the cost of cleaning water;
and calculating the unit operation cost of the primary desalting device according to the electric quantity cost, the medicament cost, the water inlet cost, the cleaning water cost and the water making quantity of the primary desalting device.
6. The statistical method for unit operation cost of chemical desalted water treatment system as claimed in claim 1, wherein calculating the unit operation cost of the mixed bed specifically comprises:
calculating the cost of electric quantity generated by the operation of a desalting water pump, a water treatment wastewater delivery pump, an acid-base regeneration pump and a desalting self-use water pump, the cost of medicaments generated by consumption of 31 percent of HCl and 40 percent of NaOH, the cost of water inlet and the cost of cleaning water;
and calculating the unit operation cost of the mixed bed according to the electric quantity cost, the medicament cost, the water inlet cost, the cleaning water cost and the water making amount of the mixed bed.
7. The statistical method for unit operation cost of chemical desalted water treatment system as claimed in any one of claims 1 to 6, wherein: the acquisition calculation period was one hour.
8. A unit operation cost statistical device of a chemical demineralized water treatment system is characterized by being suitable for a water island system and comprising: a parameter acquisition unit and a cost calculation unit;
the parameter acquisition unit is used for judging the running states of various treatment devices in the chemical desalted water treatment system, and the treatment devices comprise a machining pool, an ultrafiltration device, a reverse osmosis device, a primary desalting device and a mixed bed; the method comprises the steps of periodically acquiring flow parameters and electric quantity parameters of each processing device in a non-stop state, wherein the flow parameters comprise water inflow, medicament consumption, cleaning water consumption and water making amount; the electric quantity parameter comprises the electric power consumption of various processing devices, and the acquisition process of the electric power consumption comprises the following steps: collecting the sum of rated power consumption of running electric pumps corresponding to each processing device and the sum of rated power consumption of running electric pumps of the water island system, calculating the ratio of the sum of rated power consumption of the running electric pumps to the sum of rated power consumption of the running electric pumps of the water island system to obtain an electric quantity sharing coefficient corresponding to each processing device, and calculating the power consumption corresponding to each processing device according to the electric quantity sharing coefficient and the statistical electric quantity of an electric meter;
the cost calculation unit is used for calculating the unit operation cost of each processing device in a period according to the flow parameter, the electric quantity parameter and the corresponding cost unit price of each processing device.
9. The utility model provides a unit running cost statistics equipment of chemical demineralized water processing system which characterized in that: comprises at least one control processor and a memory for communicative connection with the at least one control processor; the memory stores instructions executable by the at least one control processor to enable the at least one control processor to perform the statistical method of unit operating cost for a chemical desalinated water processing system according to any one of claims 1 to 7.
10. A computer-readable storage medium characterized by: the computer-readable storage medium stores computer-executable instructions for causing a computer to perform the statistical method of unit operating costs of a chemical-desalination water treatment system as defined in any one of claims 1 to 7.
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