CN212253818U - Chemical industry, metallurgical cooling heat recovery system - Google Patents

Abstract

The utility model discloses a chemical industry, metallurgical cooling heat recovery system, including one-level transducer, second grade transducer and temperature hoisting device, one-level transducer and second grade transducer closed cycle are connected, and temperature hoisting device and second grade transducer intercommunication are used for steam temperature's promotion. The utility model discloses to get into waste heat equipment through the high temperature medium behind the indirect heating equipment to retrieve the low-grade heat energy that carries altogether, the low-temperature cooling medium after the heat transfer gets into on next step and circulates, and the low-grade heat energy of recovery turns into the high-grade heat source through heat energy conversion hoisting device, supplies the production usefulness.

Description

Chemical industry, metallurgical cooling heat recovery system

Technical Field

The utility model relates to a recovery system, concretely relates to chemical industry, metallurgical cooling heat recovery system belongs to cooling medium recovery plant technical field.

Background

In the chemical metallurgy system, in order to guarantee product quality, need cool off the cooling to the technology medium, cooling adopts indirect heat transfer equipment, carries out indirect heat transfer, and the medium after the heat transfer distributes away the absorbed heat through the cooling facility, reaches the production technology requirement after, cyclic utilization, this paper has set up one set of heat recovery system, utilizes the heat energy in the recovery cooling medium to produce low temperature low pressure steam (or medium temperature pressure steam) and recycle in the production.

The original cooling system has the following problems:

1: in the circulating cooling medium, heat cannot be recovered.

2: the evaporation consumption of the cooling medium is greatly needed to be supplemented.

3: the scale inhibitor needs to be added into the cooling medium regularly, which increases the production cost.

4: the pollutants in the cooling medium need to be discharged regularly, and the environmental protection cost of enterprises is increased.

5: in the cooling process of the cooling medium, a large amount of electric power is consumed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the above-mentioned not enough of prior art, provide a chemical industry, metallurgical cooling heat recovery system.

In order to solve the above problem, the utility model adopts the following technical scheme: the utility model provides a chemical industry, metallurgical cooling heat recovery system, includes one-level transducer, second grade transducer and temperature hoisting device, and one-level transducer and second grade transducer closed cycle are connected, and temperature hoisting device and second grade transducer intercommunication are used for the promotion of steam temperature.

The following is the utility model discloses to the further optimization of above-mentioned scheme: the primary energy conversion device, the secondary energy conversion device and the temperature lifting device are all connected with a controller through detection devices.

Further optimization: and the controller is connected with a flow control device.

Further optimization: and a circulating device for assisting the medium to flow is arranged between the primary energy conversion device and the secondary energy conversion device.

Further optimization: the primary transducer device is a commercially available cooler.

Further optimization: the secondary energy conversion device is a high-temperature heat pump condenser sold in the market.

Further optimization: the circulating equipment is a booster pump sold in the market.

Further optimization: the temperature raising device is a commercially available water vapor compressor.

Further optimization: the flow control device includes a first flow control valve disposed between the first flow meter and the booster pump.

Further optimization: and a second flow control valve for controlling the flow of the steam entering the steam compressor is arranged on the steam compressor.

The utility model discloses to get into waste heat equipment through the high temperature medium behind the indirect heating equipment to retrieve the low-grade heat energy that carries altogether, the low-temperature cooling medium after the heat transfer gets into on next step and circulates, and the low-grade heat energy of recovery turns into the high-grade heat source through heat energy conversion hoisting device, supplies the production usefulness.

The present invention will be further explained with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic flow chart of the present invention in an embodiment.

In the figure: 1-a booster pump; 2-a cooler; 3-high temperature heat pump condenser; 4-a water vapor compressor; 5-a first flow meter; 6-a first flow control valve; 7-a first temperature sensor; 8-a first pressure sensor; 9-a second temperature sensor; 10-a second pressure sensor; 11-a third temperature sensor; 12-a third pressure sensor; 13-a fourth temperature sensor; 14-a fourth pressure sensor; 15-a second flow control valve; 16-third flow control valve.

Detailed Description

The embodiment is as shown in fig. 1, a chemical and metallurgical cooling heat energy recovery system, which comprises a primary energy conversion device, a secondary energy conversion device and a temperature lifting device, wherein the primary energy conversion device and the secondary energy conversion device are in closed cycle connection, and the temperature lifting device is communicated with the secondary energy conversion device and used for lifting the temperature of steam.

The primary energy conversion device, the secondary energy conversion device and the temperature lifting device are all connected with a controller through detection devices and used for detecting corresponding data of input ends or output ends of the connecting pipelines and the corresponding equipment.

The controller is connected with a flow control device for controlling the flow of media at the input end or the output end of each connecting pipeline and corresponding equipment, and adopts a commercially available DOC (programmable logic controller) (PLC).

And a circulating device for assisting the medium to flow is arranged between the primary transducer device and the secondary transducer device, so that the design is convenient for the medium to flow.

The primary energy conversion device is a cooler 2 sold in the market, a medium input end, a medium output end, a gas input end and a gas output end are arranged on the cooler 2, the medium input end and the medium output end are two ends of the same loop (pipeline), and the gas input end and the gas output end are two ends of the same loop (pipeline).

The secondary energy conversion device is a high-temperature heat pump condenser 3 sold in the market, a medium input end, a medium output end, a liquid (water) input end and a steam output end are also arranged on the high-temperature heat pump condenser 3, the medium input end and the medium output end are two ends of the same loop (pipeline), and the liquid (water) input end and the steam output end are two ends of the same loop (pipeline).

The medium input end of the cooler 2 is hermetically connected with the medium output end of the high-temperature heat pump condenser 3 through a pipeline, and the medium output end of the cooler 2 is hermetically connected with the medium input end of the high-temperature heat pump condenser 3 through a pipeline, so that the design is convenient for the closed cycle of the medium.

The circulating device is a commercially available booster pump 1, and may be a commercially available circulating pump or other device capable of driving the medium to flow.

And the booster pump 1 is arranged on a pipeline between the medium input end of the cooler 2 and the medium output end of the high-temperature heat pump condenser 3.

The gas input end of the cooler 2 is connected with high-temperature cooling gas, the high-temperature cooling gas heats a cooling medium in the cooler 2, low-temperature cooling gas is output from the gas output end of the cooler 2, the heated cooling medium enters the high-temperature heat pump condenser 3, and liquid (water) in the high-temperature heat pump condenser 3 is heated to form low-grade steam (low-temperature steam of 120 ℃).

The temperature raising device is a water vapor compressor 4 sold in the market, the water vapor compressor 4 is communicated with the vapor output end of the high-temperature heat pump condenser 3, and low-grade vapor output by the high-temperature heat pump condenser 3 enters the water vapor compressor 4 and outputs high-grade vapor (high-temperature vapor).

The detection device comprises a first flowmeter 5 arranged on pipelines of a medium input end of the cooler 2 and a medium output end of the high-temperature heat pump condenser 3 and used for detecting the flow of the medium.

The gas input of the cooler 2 is provided with a first temperature sensor 7 and a first pressure sensor 8 for detecting the gas flow and pressure.

And a third temperature sensor 11 and a third pressure sensor 12 for detecting the gas flow and the gas pressure are arranged at the gas output end of the cooler 2.

A fourth temperature sensor 13 and a fourth pressure sensor 14 are arranged between the water vapor compressor 4 and the high-temperature heat pump condenser 3.

A second temperature sensor 9 and a second pressure sensor 10 are arranged between the cooler 2 and the high-temperature heat pump condenser 3.

The flow control device comprises a first flow control valve 6 arranged between the first flow meter 5 and the booster pump 1 and used for controlling the flow of the medium at the medium input end of the cooler 2.

The input end of the water vapor compressor 4 is provided with a second flow control valve 15 for controlling the flow of the steam entering the water vapor compressor 4.

And the output end of the water vapor compressor 4 is provided with a third flow control valve 16 for controlling the flow of the steam output by the water vapor compressor 4.

The booster pump 2, the first flow control valve 6, the first temperature sensor 7, the first pressure sensor 8, the second temperature sensor 9, the second pressure sensor 10, the third temperature sensor 11, the third pressure sensor 12, the fourth temperature sensor 13, the fourth pressure sensor 14, the second flow control valve 15 and the third flow control valve 16 are respectively connected with a controller.

The first flow control valve 6, the second flow control valve 15 and the third flow control valve 16 are all commercially available automatic flow control valves.

When in use, softened water (cooling medium) is injected into the closed circulation pipelines of the cooler 2 and the high-temperature heat pump condenser 3, and corresponding parameters (temperature, flow and pressure) are set, then the whole system is operated, the detection device detects the whole system and transmits the detection result to the controller in real time, the controller controls the booster pump 1 to start, the low-temperature cooling medium enters the cooler 2 through the booster pump 1 via the first flow meter 5 and the first flow control valve 6, meanwhile, high-temperature cooling gas is introduced into the cooler 2, the cooling medium and the high-temperature cooling gas exchange energy in the cooler 2, the cooling medium absorbing heat enters the high-temperature heat pump condenser 3, then the steam enters a booster pump 1, a high-temperature heat pump condenser 3 generates low-grade steam, and the low-grade steam is changed into high-grade steam through a steam compressor 4;

when the value detected by the second temperature sensor 9 is lower than or higher than a preset threshold value, the controller controls the opening angle of the first flow control valve 6 to control the flow so as to ensure that the temperature of the cooling material is within a required range;

when the value detected by the fourth temperature sensor 13 is lower than or higher than the preset threshold, the controller controls the opening angle of the second flow control valve 15 to control the flow rate so as to ensure that the steam output by the high-temperature heat pump condenser 3 reaches the preset temperature.

The utility model discloses can satisfy the enterprise, energy saving and emission reduction, the target of festival branch increase, realize the closed circulation of coolant, the non-consumption is pollution-free to the environment, the utility model discloses change original open cooling system into confined cooling system, cancel the former cooling arrangement among the open cooling system, retrieve the heat from closed circulation medium, pass through heat lifting means (vapor compressor) to the low-grade heat of retrieving in the cooling medium and turn into the high-grade heat, supply in production usefulness, simultaneously the utility model discloses whole automatic adjusting device that adopts has improved the safe operating efficiency of device.

Having shown and described the basic principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof, and it is therefore intended that the embodiments be considered as exemplary and not limiting in any way, since the scope of the invention is defined by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein and are therefore not to be embraced therein by any reference numerals in the claims.

Claims (10)

1. The utility model provides a chemical industry, metallurgical cooling heat recovery system which characterized in that: the steam temperature raising device is communicated with the secondary energy conversion device and used for raising the steam temperature.

2. The chemical and metallurgical cooling heat energy recovery system of claim 1, wherein: the primary energy conversion device, the secondary energy conversion device and the temperature lifting device are all connected with a controller through detection devices.

3. The chemical and metallurgical cooling heat energy recovery system of claim 2, wherein: and the controller is connected with a flow control device.

4. The chemical and metallurgical cooling heat energy recovery system of claim 3, wherein: and a circulating device for assisting the medium to flow is arranged between the primary energy conversion device and the secondary energy conversion device.

5. The chemical and metallurgical cooling heat energy recovery system of claim 4, wherein: the primary energy conversion device is a commercial cooler (2).

6. The chemical and metallurgical cooling heat energy recovery system of claim 5, wherein: the secondary energy conversion device is a high-temperature heat pump condenser (3) sold in the market.

7. The chemical and metallurgical cooling heat energy recovery system of claim 6, wherein: the circulating equipment is a commercial booster pump (1).

8. The chemical and metallurgical cooling heat energy recovery system of claim 7, wherein: the temperature raising device is a commercially available water vapor compressor (4).

9. The chemical and metallurgical cooling heat energy recovery system of claim 8, wherein: the flow control device comprises a first flow control valve (6) for controlling the flow of the medium.

10. The chemical and metallurgical cooling heat energy recovery system of claim 8, wherein: and a second flow control valve (15) for controlling the flow of the steam entering the water vapor compressor (4) is arranged on the water vapor compressor (4).

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