CN211367259U

CN211367259U - System for be used for heat supply network moisturizing to handle

Info

Publication number: CN211367259U
Application number: CN201922025425.9U
Authority: CN
Inventors: 刘政修; 李刚; 韩志勇; 王斌; 杨勇; 梅东升; 毛永清; 郭永红; 于海琴; 李朝晖; 何晓迪; 白玉莲; 郭强; 段立国
Original assignee: Beijing Jingneng Energy Technology Research Co ltd; Hebei Zhuozhou Jingyuan Thermal Electricity Co ltd
Current assignee: Beijing Jingneng Energy Technology Research Co ltd; Hebei Zhuozhou Jingyuan Thermal Electricity Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-08-28
Anticipated expiration: 2029-11-21

Abstract

The utility model relates to a system for heat supply network moisturizing is handled, including running water supply channel, No. 1 water tank, filter, electric adsorption device, No. 2 water tanks, air compressor machine, back flush pump, No. 1 underground water pool, No. 2 underground water pools. The tap water supply pipeline is connected with No. 1 water tank, and No. 2 water tank is connected with the heat supply network. No. 1 water tank is connected to the filter through the water pump, and the filter delivery port is connected to No. 2 water tanks through electric adsorption device, and No. 2 water tanks is connected with the heat supply network. An air compressor is connected to an air inlet of the filter, a backwashing pump is connected to a backwashing water inlet of the filter, and a washing water outlet of the filter is connected to a No. 1 underground water pool. The washing and draining port of the electric adsorption device is connected to a No. 2 underground water pool. The utility model discloses a to the filtration and the adsorption treatment of heat supply network water, satisfied the heat supply network moisturizing quality standard of requirement, it is short to have process flow, and area is few, and the water utilization ratio is high, and waste water discharge is few and do benefit to environmental protection's advantage.

Description

System for be used for heat supply network moisturizing to handle

Technical Field

The utility model belongs to the technical field of industrial water handles, a system for heat supply network moisturizing is handled is related to.

Background

The central heating of the development area can save energy, protect the environment, improve the heating efficiency and ensure the life of people. In order to prevent the corrosion and scaling of a thermodynamic system, particularly a heat exchanger, the water supplement of a heat supply network needs to meet certain requirements. CJJ34-2010 urban heating network design Specification requires that the hardness of water supplement of the heat supply network is less than or equal to 0.6 mmol/L. The heat exchanger is made of stainless steel (304, 316 or 316L and the like) so as to prevent the heat exchanger from stress corrosion, and the chloride ion is required to be less than or equal to 25 mmol/L.

The heat power company generally adopts the traditional treatment method, namely a sodium ion exchanger is used for removing calcium ions and magnesium ions in water to prepare softened water. Calcium and magnesium ions with hardness in water are exchanged with ion exchange resin in the sodium ion exchanger, and the calcium and magnesium ions in the water are exchanged by the sodium ions, so that the hardness of water supplement of the heat supply network is ensured to be less than or equal to 0.6mmol/L, and carbonate scale is not easy to form in the heat supply network system. The processing method has the following defects: the discarded ion exchange resin is a dangerous chemical and is not easy to dispose. And secondly, a matched ion exchanger resin regeneration system is needed, and the occupied area is large. And thirdly, a large amount of regeneration waste liquid needs to be discharged, and the salt content is high, so that the environment is not protected. And fourthly, a large amount of chlorine reducing agents are required to be added to prevent the heat exchanger from being corroded, the operation cost is increased, and the environment is polluted by the discharged water.

The water supply of the heat supply network of the thermal power plant generally adopts reverse osmosis water production, namely, a process of 'filter + self-cleaning filter + ultrafiltration + reverse osmosis' is adopted. The treatment method has the following defects: firstly, the process flow is long, and the body and the matched equipment occupy large area; secondly, the equipment is more, and the investment is large; the operation cost is high, which is not beneficial to energy saving; fourthly, the water utilization rate is not higher than 65 percent, and the waste water is discharged more, which is not beneficial to environmental protection; fifthly, dangerous chemicals such as hydrochloric acid, sodium hydroxide and sodium hypochlorite are used, and the management cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a processing system for heat supply network moisturizing satisfies the heat supply network moisturizing quality standard of requirement, reduces equipment investment and operation cost, reduces the area cost, improves industrial water's utilization ratio.

The technical scheme of the utility model is that: the treatment system for the heat supply network water supplementing treatment method comprises a tap water supply pipeline, a No. 1 water tank, a filter, an electric adsorption device, a No. 2 water tank, an air compressor, a back flushing pump, a No. 1 underground water tank and a No. 2 underground water tank. The electric adsorption device is provided with a water outlet and a washing water outlet, and the filter is provided with an air inlet, a backwashing water inlet and a washing water outlet. The tap water supply pipeline is connected with No. 1 water tank, and No. 2 water tank is connected with the heat supply network. No. 1 water tank is connected to the filter through the water pump, and the filter delivery port is connected to No. 2 water tank through the electric adsorption device. An air compressor is connected to an air inlet of the filter, a backwashing pump is connected to a backwashing water inlet of the filter, and a washing water outlet of the filter is connected to a No. 1 underground water pool. The washing and draining port of the electric adsorption device is connected to a No. 2 underground water pool.

The filter is provided with a filter material which is quartz sand, anthracite or fiber bundle. The electric adsorption device consists of a capacitance deionization adsorption module, power supply equipment, a detection instrument, a control unit and a pipe valve. The detection instrument comprises a conductivity meter, a temperature meter, a water inlet and outlet flow meter, a water inlet and outlet pressure meter, a voltmeter and an ammeter.

The inlet water quality requirements of the electric adsorption device are as follows: COD is less than or equal to 100mg/L, oil is less than or equal to 3mg/L, turbidity is less than or equal to 5NTU, and inlet water conductivity is 1000-5000 mu S/cm. The adsorption time of the electro-adsorption device (4) is 6.5min, the regeneration time is 2.5min, the pre-flushing time is 1min, the working current is 35A, and the water inlet flow is 30L/min. The requirements of reclaimed water or tap water passing through the electro-adsorption device are as follows: the water hardness is less than or equal to 6mmol/L, and the chloride ion is less than or equal to 150 mg/L. The water outlet of the electric adsorption device is as follows: the hardness is less than or equal to 0.5mmol/L, the chloride ion is less than or equal to 25mg/L, and the required water replenishing quality standard of the heat supply network is met.

The operation of the electro-adsorption device is divided into three stages: the method comprises the steps of introducing a water sample to be treated into an electric adsorption device for pre-washing, and discharging concentrated water remained in an adsorption module and a pipeline in an electrode regeneration stage by using raw water; in the adsorption stage, the capacitive deionization adsorption module adsorbs ions in raw water by utilizing the surface of the charged electrode, so that salts in the raw water are enriched and concentrated on the surface of the electrode, namely the actual water collection stage; a regeneration stage: and after the preset adsorption time is reached, the system automatically enters an electrode desorption regeneration stage. After the regeneration process is finished, the system automatically shifts to the next period.

The utility model discloses a processing system for heat supply network moisturizing is through the filtration and the adsorption treatment to the heat supply network water, has satisfied the heat supply network moisturizing quality standard of requirement, compares with prior art the utility model has the advantages that: the process flow is short, the occupied area is small, and the occupied area is reduced by 50 percent; the equipment is less, the investment is less, and the investment is reduced by 20 percent; the running cost is low and is not higher than 1.5 yuan/t; the water utilization rate is high, the water utilization rate is not lower than 85 percent, the waste water discharge is less, and the environmental protection is facilitated; dangerous chemicals such as hydrochloric acid, sodium hydroxide, sodium hypochlorite and the like are not used, so that the management is convenient; sixthly, the requirement on inlet water quality is low, the pretreatment is simple, and the automation degree is high. No regenerated sodium chloride waste liquid is discharged, and the method has advantages in the application in the area with strict environmental protection requirements.

Drawings

FIG. 1 is a schematic flow chart of the present invention for a water supply system of a heat supply network;

wherein: no. 1-1 water tank, 2-water pump, 3-filter, 4-electric adsorption device, No. 5-2 water tank, 6-air compressor, 7-back flush pump, No. 8-1 underground water pool, No. 9-2 underground water pool.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings. The protection scope of the present invention is not limited to the embodiments, and those skilled in the art can make any changes within the scope defined by the claims.

The utility model discloses a processing system for heat supply network moisturizing processing method, as shown in fig. 1, including running water supply pipe, No. 1 water tank 1, filter 3, electric adsorption equipment 4, No. 2 water tank 5, air compressor machine 6, back flush pump 7, No. 1 underground water pool 8, No. 2 underground water pool 9. The electric adsorption device 4 is provided with a water outlet and a washing water outlet, and the filter 3 is provided with an air inlet, a backwashing water inlet and a washing water outlet. The running water supply pipe way is connected with 1 No. 1 water tank, and 1 No. 1 water tank is connected to filter 3 through water pump 2, and 3 delivery ports on the filter are connected to 2 No. water tanks through the electric adsorption device. An air compressor 6 is connected to an air inlet of the filter, a backwashing pump is connected to a backwashing water inlet of the filter, a washing water outlet of the filter is connected to a No. 1 underground water tank 8, and a washing water outlet of the electric adsorption device is connected to a No. 2 underground water tank. The filter material in the filter is quartz sand. The electric adsorption device consists of a capacitance deionization adsorption module, power supply equipment, a detection instrument, a control unit and a pipe valve, wherein the detection instrument comprises a conductivity meter, a temperature meter, a water inlet and outlet flow meter, a water inlet and outlet pressure meter, a voltmeter and an ammeter. The control unit is in communication connection with the conductivity meter, the temperature meter, the water inlet and outlet flow meter, the water inlet and outlet pressure meter, the voltmeter, the ammeter, the backwashing pump 7, the backwashing water inlet valve and the flushing water outlet valve, and automatically controls the operation of the electric adsorption device.

The utility model is used for the process that the heat supply network moisturizing was handled does: the reclaimed water for the water replenishing of the heat supply network is subjected to the removal of suspended matters and organic matters through the filter 3, and then calcium ions, magnesium ions and chloride ions are removed through the electric adsorption device 4, so that the treated water can meet the water replenishing requirement of the heat supply network. When the turbidity of the effluent of the filter exceeds the standard, the filter is back flushed by air and flushing water, and the electric adsorption device regularly performs back flushing and regeneration.

The operation of the electro-adsorption device 4 is divided into three phases: the method comprises the steps of introducing a water sample to be treated into an electric adsorption device for pre-washing, and discharging concentrated water remained in an adsorption module and a pipeline in an electrode regeneration stage by using raw water; in the adsorption stage, the capacitive deionization adsorption module adsorbs ions in raw water by utilizing the surface of the charged electrode, so that salts in the raw water are enriched and concentrated on the surface of the electrode, namely the actual water collection stage; a regeneration stage: and after the preset adsorption time is reached, the system automatically enters an electrode desorption regeneration stage. A regeneration stage; after the regeneration process is finished, the system automatically shifts to the next period.

The electric adsorption technology is a desalting technology which uses potential difference as driving force and promotes ions to be adsorbed to the surface of a charged electrode, and has the following characteristics:

the energy-saving and water-saving device has the advantages of energy saving and water saving, environmental friendliness and low operation cost. The recovery rate of the capacitance membrane adsorption device is 75-85%, and even can reach more than 90% if proper process combination is adopted. The service life of the core component is as long as more than 10 years, no medicament is required to be added, secondary pollution is avoided, the operation cost of capacitance membrane adsorption and the cost of spare parts are low, and the average operation cost is about 1.5 yuan/ton water.

The device is reliable, stable in operation and high in automation degree.

According to the desalting principle of the capacitance membrane adsorption desalting device, anions and cations are respectively removed, so that scales cannot be generated by mutual combination, and special maintenance on core components is not needed during shutdown. The system is controlled by a computer, and the automation degree is high. The desalting rate is 70-95%, and can be adjusted according to requirements.

The adaptability is strong, and the operation and the maintenance are simple and convenient.

According to the structure of the capacitance film adsorption desalting device, the requirement on the pretreatment of the raw water is not high; the anti-pollution capacity of the capacitor film adsorption device has wide adaptability and good practicability, and the inlet water quality requirement is low: COD is less than or equal to 100mg/L, oil is less than or equal to 3mg/L, turbidity is less than or equal to 5NTU, and inlet water conductivity range is 1000-.

The best working condition of the electric adsorption device is obtained through experiments: the adsorption time is 6.5min, the regeneration time is 2.5min, the pre-flushing time is 1min, the working current is 35A, the water inlet flow is 30L/min, under the condition, the recovery rate is 78.79%, the total hardness and Ca are²⁺、Mg²⁺、Na⁺、Cl^-、SO₄ ^2-The removal rates of (a) were 92.52%, 92.82%, 92.33%, 94.74%, 85.71%, 64.10%, respectively, the total removal rate of monovalent ions was 90.91%, and the total removal rate of divalent ions was 88.04%.

Claims

1. A system for heat supply network moisturizing is handled, characterized by: the system comprises a tap water supply pipeline, a No. 1 water tank (1), a filter (3), an electric adsorption device (4), a No. 2 water tank (5), an air compressor (6), a backwashing pump (7), a No. 1 underground water tank (8) and a No. 2 underground water tank (9); the electric adsorption device (4) is provided with a water outlet and a washing water outlet; the filter (3) is provided with an air inlet, a backwashing water inlet and a washing water outlet; the tap water supply pipeline is connected with a No. 1 water tank (1), the No. 1 water tank is connected to a filter (3) through a water pump (2), a water outlet of the filter (3) is connected to the No. 2 water tank through an electric adsorption device, and the No. 2 water tank is connected with a heat supply network; the air compressor (6) is connected to an air inlet of the filter, the backwashing pump is connected to a backwashing water inlet of the filter, and a washing water outlet of the filter is connected to a No. 1 underground water pool (8); the washing and draining port of the electric adsorption device is connected to a No. 2 underground water pool (9).

2. The system for moisturizing a heat supply network of claim 1, wherein: the filter is internally provided with a filter material which is quartz sand, anthracite or fiber bundles.

3. The system for moisturizing a heat supply network of claim 1, wherein: the electric adsorption device consists of a capacitance deionization adsorption module, power supply equipment, a detection instrument, a control unit and a pipe valve; the detection instrument comprises a conductivity meter, a temperature meter, a water inlet and outlet flow meter, a water inlet and outlet pressure meter, a voltmeter and an ammeter.

4. The system for moisturizing a heat supply network of claim 1, wherein: the inlet water quality requirement of the electric adsorption device (4) is as follows: COD is less than or equal to 100mg/L, oil is less than or equal to 3mg/L, turbidity is less than or equal to 5NTU, and the conductivity range is 1000-.

5. The system for moisturizing a heat supply network of claim 1, wherein: the working conditions of the electric adsorption device (4) are as follows: the adsorption time is 6.5min, the regeneration time is 2.5min, the pre-flushing time is 1min, the working current is 35A, and the water inlet flow is 30L/min.