Integrated cooling and steam supply system

Abstract

The invention belongs to the field of heat pumps, and provides an integrated cooling and steam supply system which comprises a waste heat drive type absorption refrigerator and a first direct generation type high-temperature steam heat pump which are in bidirectional connection. The waste heat drive type absorption refrigerator comprises a first generator, a first evaporator, an absorber and a first condenser. The first direct generation type high-temperature steam heat pump comprises a first compressor, a throttling mechanism, a steam generator and a water vapor compressor. By absorbing waste heat in the technological process, cooling of an input medium and preparation of high-pressure steam are achieved, recycling of heat is completed, emission of pollutants is reduced, and the energy utilization efficiency is improved; through the first direct generation type high-temperature steam heat pump, loss caused by a conventional flash evaporation process is avoided, and the overall efficiency of the system is improved; the absorber and the first condenser serve as evaporators of the high-temperature steam heat pump, the intermediate circulating water heat exchange process is avoided, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of heat pumps, and in particular to an integrated cooling and steam supply system. Background Art

[0002] The premise of achieving carbon neutrality is to promote energy transformation and promote the energy system from carbon-based energy based on fossil energy to zero-carbon energy based on renewable energy. Comprehensive electrification is one of the main tasks of energy transformation. Electric heat pumps meet the development needs of terminal energy electrification, are the best way to efficiently convert electricity into heat, and are an important technology to solve the problem of zero-carbon energy. In the industrial field, the use of heat pumps to recover process waste heat, replace boilers or electric furnaces to provide heat energy, and meet the heat demand of industrial production processes will greatly reduce the consumption of fossil fuels and help achieve the goal of carbon neutrality. There are many types of waste heat in the petrochemical, coal chemical, salt chemical, fine chemical and other industries, including steam, hot water, flue gas, etc. At the same time, the industry usually requires cold water at about 7°C for process cooling and comfort air conditioning in office buildings, and requires a medium at 0°C or below for freezing and refrigeration. Because high-temperature waste heat and process cooling exist at the same time, waste heat can be used to drive absorption chillers, such as using low-pressure steam or waste heat as a heat source to produce cold water to meet process cooling needs. According to statistics from the International Energy Agency, heat demand accounts for 50% of the energy demand side. The heat demand in the industrial field is mostly concentrated between 80 and 170°C, and steam is usually used as the heat carrier. The existing steam sources are mainly direct supply from thermal power plants and self-provided coal-fired and steam-fired boilers.

[0003] Figure 2 This is a brief flow chart of waste heat driven absorption refrigeration. The waste heat releases in the generator to drive the unit to operate, and generates process cooling in the first evaporator. However, due to the principle limitation of the system itself, a cooling tower is required to dissipate the heat of the absorber and the first condenser. In addition, the direct supply of steam from the thermal power plant has a heating radius of less than 30km, a pressure drop of 0.04 to 0.05Mpa per kilometer, and a temperature drop of 3 to 6℃ per kilometer. The heat loss is large and the initial investment is high. The absorption refrigeration machine is used to recover waste heat to generate low-temperature cold water for process cooling. A cooling tower needs to be arranged in the system to dissipate the heat of the absorber and the first condenser, which results in energy loss and environmental pollution. In addition, the absorption refrigeration machine can only realize the refrigeration function and cannot use waste heat to produce steam. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide an integrated cooling and steam supply system, which realizes the cooling of the input medium and the preparation of high-pressure steam by absorbing the waste heat of the process, completes the heat recovery and utilization, reduces the emission of pollutants, and improves the energy utilization efficiency; through the first direct generation high-temperature steam heat pump, the loss caused by the conventional flash evaporation process is avoided, and the overall efficiency of the system is improved; the absorber and the first condenser are used as the evaporator of the high-temperature steam heat pump to avoid the intermediate circulating water heat exchange process and improve the heat exchange efficiency.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] An integrated cooling and steam supply system, comprising: a waste heat driven absorption refrigerator and a first direct generation high temperature steam heat pump connected in both directions; the waste heat driven absorption refrigerator comprises: a first generator, a first evaporator, an absorber and a first condenser; the first direct generation high temperature steam heat pump comprises: a first compressor, a throttling mechanism, a steam generator and a water vapor compressor;

[0007] The first generator and the first condenser are arranged in a first cylinder; the absorber and the first evaporator are arranged in a second cylinder; there is a liquid working medium in the first generator; the inlet of the absorber and the outlet of the first condenser are respectively connected to the outlet of the throttling mechanism and the inlet of the first compressor; the inlet and outlet of the input end of the steam generator are respectively connected to the outlet of the first compressor and the inlet of the throttling mechanism; the inlet and outlet of the output end of the steam generator are respectively connected to a preset water supply pipeline and the inlet of the water vapor compressor;

[0008] The first generator is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and the concentrated working medium to the first condenser and the absorber respectively; the first condenser is used to condense the steam working medium into the liquid working medium, and transport the liquid working medium to the first evaporator; the first evaporator is used to heat the liquid working medium with the external input medium to obtain the steam working medium, and transport the steam working medium to the absorber; the absorber is used to dilute the concentrated working medium with the steam working medium to obtain the liquid working medium, and transport the liquid working medium to the first generator; the first condenser and The absorber is also used to transfer the heat generated during condensation and dilution to the low-temperature and low-pressure refrigerant transported by the throttling mechanism to obtain a low-temperature and low-pressure gaseous refrigerant, and transport the low-temperature and low-pressure gaseous refrigerant to the first compressor; the first compressor is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant; the steam generator is used to convert the low-temperature water input from the outside into low-pressure steam by absorbing the heat of the high-temperature and high-pressure gaseous refrigerant to obtain a liquid refrigerant, and transport the liquid refrigerant to the throttling mechanism; the throttling mechanism is used to reduce the pressure of the liquid refrigerant to the low-temperature and low-pressure refrigerant; the water vapor compressor is used to compress the low-pressure steam into high-pressure steam.

[0009] Preferably, the external input medium includes: water and ice slurry.

[0010] Preferably, a flash evaporation cooling and steam supply system with intermediate circulating water comprises: a waste heat driven absorption refrigerator and a first flash evaporation high-temperature steam heat pump connected in both directions; the waste heat driven absorption refrigerator comprises: a first generator, a first evaporator, an absorber and a first condenser; the first flash evaporation high-temperature steam heat pump comprises: a first compressor, a throttling mechanism, a second evaporator, a second condenser, a flash evaporation generator and a water vapor compressor;

[0011] The first generator and the first evaporator are arranged in a first cylinder; the absorber and the first condenser are arranged in a second cylinder; there is a liquid working medium in the first generator; the inlet of the absorber and the outlet of the first condenser are respectively connected to the outlet and inlet of the input end of the second evaporator; the inlet and outlet of the output end of the second evaporator are respectively connected to the outlet of the throttling mechanism and the inlet of the first compressor; the inlet and outlet of the input end of the second condenser are respectively connected to the outlet of the first compressor and the inlet of the throttling mechanism; the inlet and outlet of the output end of the second condenser are respectively connected to the outlet and inlet of the input end of the flash generator; a water replenishment port is arranged on the outlet pipeline of the input end of the flash generator; the outlet of the output end of the flash generator is connected to the inlet of the water vapor compressor;

[0012] The first generator is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and the concentrated working medium to the first condenser and the absorber respectively; the first condenser is used to condense the steam working medium into the liquid working medium, and transport the liquid working medium to the first evaporator; the first evaporator is used to heat the liquid working medium with the external input medium to obtain the steam working medium, and transport the steam working medium to the absorber; the absorber is used to dilute the concentrated working medium with the steam working medium to obtain the liquid working medium, and transport the liquid working medium to the first generator; the first condenser and the absorber are also used to transfer the heat generated during condensation and dilution to the low-temperature cooling water transported by the second evaporator to obtain high-temperature cooling water, and transport the high-temperature cooling water to the second evaporator; the second evaporator is used to heat the liquid working medium with the high-temperature cooling medium The water heats the low-temperature and low-pressure refrigerant transported by the throttling mechanism to obtain a low-temperature and low-pressure gaseous refrigerant and the low-temperature cooling water, and transports the low-temperature and low-pressure gaseous refrigerant to the first compressor; the first compressor is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and transports the high-temperature and high-pressure gaseous refrigerant to the second condenser; the second condenser is used to heat the low-temperature flash water transported by the flash generator with the high-temperature and high-pressure gaseous refrigerant to obtain high-temperature flash water and liquid refrigerant, and transport the high-temperature flash water and the liquid refrigerant to the flash generator and the throttling mechanism respectively; the throttling mechanism is used to reduce the pressure of the liquid refrigerant to the low-temperature and low-pressure refrigerant; the flash generator is used to flash the high-temperature flash water to obtain the low-temperature flash water and low-pressure steam; the water replenishment port is used to supplement the steam flash volume; the water vapor compressor is used to compress the low-pressure steam into high-pressure steam.

[0013] Preferably, a direct cooling and steam supply system with intermediate circulating water comprises: a waste heat driven absorption refrigerator and a second direct generation high temperature steam heat pump connected in both directions; the waste heat driven absorption refrigerator comprises: a first generator, a first evaporator, an absorber and a first condenser; the second direct generation high temperature steam heat pump comprises: a first compressor, a throttling mechanism, a second evaporator, a steam generator and a water vapor compressor;

[0014] The first generator and the first condenser are arranged in a first cylinder; the absorber and the first evaporator are arranged in a second cylinder; there is a liquid working medium in the first generator; the inlet of the absorber and the outlet of the first condenser are respectively connected to the outlet and inlet of the input end of the second evaporator; the inlet and outlet of the output end of the second evaporator are respectively connected to the outlet of the throttling mechanism and the inlet of the first compressor; the inlet and outlet of the input end of the steam generator are respectively connected to the outlet of the first compressor and the inlet of the throttling mechanism; the inlet and outlet of the output end of the steam generator are respectively connected to a preset water supply pipeline and the inlet of the water vapor compressor;

[0015] The first generator is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and the concentrated working medium to the first condenser and the absorber respectively; the first condenser is used to condense the steam working medium into the liquid working medium, and transport the liquid working medium to the first evaporator; the first evaporator is used to heat the liquid working medium with the external input medium to obtain the steam working medium, and transport the steam working medium to the absorber; the absorber is used to dilute the concentrated working medium with the steam working medium to obtain the liquid working medium, and transport the liquid working medium to the first generator; the first condenser and the absorber are also used to transfer the heat generated during condensation and dilution to the low-temperature cooling water transported by the second evaporator to obtain high-temperature cooling water, and transport the high-temperature cooling water to the absorber. The cooling water is transported to the second evaporator; the second evaporator is used to use the high-temperature cooling water to heat the low-temperature and low-pressure refrigerant transported by the throttling mechanism to obtain a low-temperature and low-pressure gaseous refrigerant and the low-temperature cooling water, and the low-temperature and low-pressure gaseous refrigerant is transported to the first compressor; the first compressor is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and transport the high-temperature and high-pressure gaseous refrigerant to the steam generator; the steam generator is used to use the high-temperature and high-pressure gaseous refrigerant to heat the low-temperature water transported from the outside to obtain low-pressure steam and liquid refrigerant, and the low-pressure steam and the liquid refrigerant are transported to the water vapor compressor and the throttling mechanism respectively; the throttling mechanism is used to reduce the pressure of the liquid refrigerant to the low-temperature and low-pressure refrigerant; the water vapor compressor is used to compress the low-pressure steam into high-pressure steam.

[0016] Preferably, a flash evaporation cooling and steam supply system without intermediate circulating water comprises: a waste heat driven absorption refrigerator and a second flash evaporation high-temperature steam heat pump connected in both directions; the waste heat driven absorption refrigerator comprises: a first generator, a first evaporator, an absorber and a first condenser; the second flash evaporation high-temperature steam heat pump comprises: a first compressor, a throttling mechanism, a second condenser, a flash evaporation generator and a water vapor compressor;

[0017] The first generator and the first condenser are arranged in a first cylinder; the absorber and the first evaporator are arranged in a second cylinder; there is a liquid working medium in the first generator; the inlet of the absorber and the outlet of the first condenser are respectively connected to the outlet of the throttling mechanism and the inlet of the first compressor; the inlet and outlet of the input end of the second condenser are respectively connected to the outlet of the first compressor and the inlet of the throttling mechanism; the inlet and outlet of the output end of the second condenser are respectively connected to the outlet and inlet of the input end of the flash generator; a water replenishment port is arranged on the outlet pipeline of the input end of the flash generator; the outlet of the output end of the flash generator is connected to the inlet of the water vapor compressor;

[0018] The first generator is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and the concentrated working medium to the first condenser and the absorber respectively; the first condenser is used to condense the steam working medium into the liquid working medium, and transport the liquid working medium to the first evaporator; the first evaporator is used to heat the liquid working medium with the external input medium to obtain the steam working medium, and transport the steam working medium to the absorber; the absorber is used to dilute the concentrated working medium with the steam working medium to obtain the liquid working medium, and transport the liquid working medium to the first generator; the first condenser and the absorber are also used to transfer the heat generated during condensation and dilution to the low-temperature and low-pressure refrigerant transported by the throttling mechanism to obtain the low-temperature and low-pressure gas refrigerant, and convey the low-temperature and low-pressure gaseous refrigerant to the first compressor; the first compressor is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and convey the high-temperature and high-pressure gaseous refrigerant to the second condenser; the second condenser is used to heat the low-temperature flash water conveyed by the flash generator with the high-temperature and high-pressure gaseous refrigerant to obtain high-temperature flash water and liquid refrigerant, and convey the high-temperature flash water and the liquid refrigerant to the flash generator and the throttling mechanism respectively; the throttling mechanism is used to reduce the pressure of the liquid refrigerant to the low-temperature and low-pressure refrigerant; the flash generator is used to flash the high-temperature flash water to obtain the low-temperature flash water and low-pressure steam; the water replenishment port is used to supplement the steam flash evaporation amount; the water vapor compressor is used to compress the low-pressure steam into high-pressure steam.

[0019] The present invention discloses the following technical effects:

[0020] The present invention provides an integrated cooling and steam supply system, which utilizes waste heat from the process to prepare process cooling and high-temperature steam, thereby solving the problems of high pollutant emissions and low energy efficiency in conventional steam preparation systems, and realizing heat recovery and utilization; through the first direct generation high-temperature steam heat pump, the problem of heat energy loss in the process of flash evaporation of hot water to prepare steam is solved, and sufficient heat conversion in the steam preparation process is realized; by using the absorber and the first condenser as the evaporator of the high-temperature steam heat pump, the loss caused by intermediate circulating water heat exchange is solved, and a more efficient heat exchange process is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of the structure of an integrated cooling and steam supply system provided in an embodiment of the present invention;

[0023] Figure 2 A brief flow chart of refrigeration of a waste heat driven absorption refrigeration machine provided in an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a flash cooling and steam supply system with intermediate circulating water provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a direct cooling and steam supply system with intermediate circulating water provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the structure of a flash cooling and steam supply system without intermediate circulating water provided in an embodiment of the present invention;

[0027] Description of reference numerals:

[0028] 1-waste heat driven absorption refrigerator, 11-first generator, 12-first evaporator, 13-first condenser, 14-absorber, 2-first direct generation high temperature steam heat pump, 21-first compressor, 22-steam generator, 23-throttling mechanism, 24-water vapor compressor, 3-first flash evaporation type high temperature steam heat pump, 31-second evaporator, 32-second condenser, 33-flash generator, 4-second direct generation high temperature steam heat pump, 5-second flash evaporation type high temperature steam heat pump. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide an integrated cooling and steam supply system, which realizes cooling of the input medium and preparation of high-pressure steam by absorbing the waste heat of the process, completes heat recovery and utilization, reduces pollutant emissions, and improves energy utilization efficiency; through the first direct generation high-temperature steam heat pump, avoids the loss caused by the conventional flash evaporation process and improves the overall efficiency of the system; uses the absorber and the first condenser as the evaporator of the high-temperature steam heat pump to avoid the intermediate circulating water heat exchange process and improve the heat exchange efficiency.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 A schematic diagram of the structure of an integrated cooling and steam supply system provided in an embodiment of the present invention is shown in FIG. Figure 1 As shown, the present invention provides an integrated cooling and steam supply system, comprising: a waste heat driven absorption refrigerator 1 and a first direct generation high temperature steam heat pump 2 connected in both directions; the waste heat driven absorption refrigerator 1 comprises: a first generator 11, a first evaporator 12, an absorber 14 and a first condenser 13; the first direct generation high temperature steam heat pump 2 comprises: a first compressor 21, a throttling mechanism 23, a steam generator 22 and a water vapor compressor 24;

[0033] The first generator 11 and the first condenser 13 are arranged in the first cylinder; the absorber 14 and the first evaporator 12 are arranged in the second cylinder; there is a liquid working medium in the first generator 11; the inlet of the absorber 14 and the outlet of the first condenser 13 are respectively connected to the outlet of the throttling mechanism 23 and the inlet of the first compressor 21; the inlet and outlet of the input end of the steam generator 22 are respectively connected to the outlet of the first compressor 21 and the inlet of the throttling mechanism 23; the inlet and outlet of the output end of the steam generator 22 are respectively connected to the preset water supply pipeline and the inlet of the water vapor compressor 24;

[0034] The first generator 11 is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and concentrated working medium to the first condenser 13 and the absorber 14 respectively; the first condenser 13 is used to condense the steam working medium into a liquid working medium, and transport the liquid working medium to the first evaporator 12; the first evaporator 12 is used to heat the liquid working medium with the external input medium to obtain steam working medium, and transport the steam working medium to the absorber 14; the absorber 14 is used to dilute the concentrated working medium with the steam working medium to obtain a liquid working medium, and transport the liquid working medium to the first generator 11; the first condenser 13 and the absorber 14 are also used to heat the liquid working medium with the external input medium to obtain a steam ... It is used to transfer the heat generated during condensation and dilution to the low-temperature and low-pressure refrigerant transported by the throttling mechanism 23 to obtain a low-temperature and low-pressure gaseous refrigerant, and transport the low-temperature and low-pressure gaseous refrigerant to the first compressor 21; the first compressor 21 is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant; the steam generator 22 is used to convert the low-temperature water input from the outside into low-pressure steam by absorbing the heat of the high-temperature and high-pressure gaseous refrigerant to obtain a liquid refrigerant, and transport the liquid refrigerant to the throttling mechanism 23; the throttling mechanism 23 is used to reduce the pressure of the liquid refrigerant to a low-temperature and low-pressure refrigerant; the water vapor compressor 24 is used to compress the low-pressure steam into high-pressure steam.

[0035] Preferably, the external input medium includes: water and ice slurry. When the external input medium flowing through the first evaporator 12 is used in the comfort air conditioning system for direct cooling, the medium is water, and the supply and return water temperature is usually 7 / 12°C. When used in the freezing and refrigeration system, the medium is ice slurry, and the temperature is usually 0°C or below. As a cold carrier and cold storage medium, ice slurry can store cold energy in combination with an ice storage device, improve system flexibility, and reduce cooling energy consumption.

[0036] Furthermore, a flash evaporation type cooling and steam supply system with intermediate circulating water comprises: a waste heat driven absorption refrigerator 1 and a first flash evaporation type high temperature steam heat pump 3 connected in both directions; the waste heat driven absorption refrigerator 1 comprises: a first generator 11, a first evaporator 12, an absorber 14 and a first condenser 13; the first flash evaporation type high temperature steam heat pump 3 comprises: a first compressor 21, a throttling mechanism 23, a second evaporator 31, a second condenser 32, a flash evaporation generator 33 and a water vapor compressor 24;

[0037] The first generator 11 and the first evaporator 12 are arranged in the first cylinder; the absorber 14 and the first condenser 13 are arranged in the second cylinder; there is a liquid working medium in the first generator 11; the inlet of the absorber 14 and the outlet of the first condenser 13 are respectively connected to the outlet and inlet of the input end of the second evaporator 31; the inlet and outlet of the output end of the second evaporator 31 are respectively connected to the outlet of the throttling mechanism 23 and the inlet of the first compressor 21; the inlet and outlet of the input end of the second condenser 32 are respectively connected to the outlet of the first compressor 21 and the inlet of the throttling mechanism 23; the inlet and outlet of the output end of the second condenser 32 are respectively connected to the outlet and inlet of the input end of the flash generator 33; a water replenishment port is arranged on the outlet pipeline of the input end of the flash generator 33; the outlet of the output end of the flash generator 33 is connected to the inlet of the water vapor compressor 24;

[0038] The first generator 11 is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and concentrated working medium to the first condenser 13 and the absorber 14 respectively; the first condenser 13 is used to condense the steam working medium into a liquid working medium, and transport the liquid working medium to the first evaporator 12; the first evaporator 12 is used to heat the liquid working medium with the external input medium to obtain steam working medium, and transport the steam working medium to the absorber 14; the absorber 14 is used to dilute the concentrated working medium with the steam working medium to obtain liquid working medium, and transport the liquid working medium to the first generator 11; the first condenser 13 and the absorber 14 are also used to transfer the heat generated during condensation and dilution to the low-temperature cooling water transported by the second evaporator 31 to obtain high-temperature cooling water, and transport the high-temperature cooling water to the second evaporator 31; the second evaporator 31 is used to use the high-temperature cooling water to The low-temperature and low-pressure refrigerant transported by the throttling mechanism 23 is heated to obtain a low-temperature and low-pressure gaseous refrigerant and low-temperature cooling water, and the low-temperature and low-pressure gaseous refrigerant is transported to the first compressor 21; the first compressor 21 is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and transport the high-temperature and high-pressure gaseous refrigerant to the second condenser 32; the second condenser 32 is used to heat the low-temperature flash water transported by the flash generator 33 with the high-temperature and high-pressure gaseous refrigerant to obtain high-temperature flash water and liquid refrigerant, and transport the high-temperature flash water and liquid refrigerant to the flash generator 33 and the throttling mechanism 23 respectively; the throttling mechanism 23 is used to reduce the pressure of the liquid refrigerant to a low-temperature and low-pressure refrigerant; the flash generator 33 is used to flash the high-temperature flash water to obtain low-temperature flash water and low-pressure steam; the water replenishment port is used to supplement the steam flash volume; the water vapor compressor 24 is used to compress the low-pressure steam into high-pressure steam.

[0039] Preferably, a direct cooling and steam supply system with intermediate circulating water comprises: a waste heat driven absorption refrigerator 1 and a second direct generation high temperature steam heat pump 4 connected in both directions; the waste heat driven absorption refrigerator 1 comprises: a first generator 11, a first evaporator 12, an absorber 14 and a first condenser 13; the second direct generation high temperature steam heat pump 4 comprises: a first compressor 21, a throttling mechanism 23, a second evaporator 31, a steam generator 22 and a water vapor compressor 24;

[0040] The first generator 11 and the first condenser 13 are arranged in the first cylinder; the absorber 14 and the first evaporator 12 are arranged in the second cylinder; there is a liquid working medium in the first generator 11; the inlet of the absorber 14 and the outlet of the first condenser 13 are respectively connected to the outlet and inlet of the input end of the second evaporator 31; the inlet and outlet of the output end of the second evaporator 31 are respectively connected to the outlet of the throttling mechanism 23 and the inlet of the first compressor 21; the inlet and outlet of the input end of the steam generator 22 are respectively connected to the outlet of the first compressor 21 and the inlet of the throttling mechanism 23; the inlet and outlet of the output end of the steam generator 22 are respectively connected to the preset water supply pipeline and the inlet of the water vapor compressor 24;

[0041] The first generator 11 is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and concentrated working medium to the first condenser 13 and the absorber 14 respectively; the first condenser 13 is used to condense the steam working medium into a liquid working medium, and transport the liquid working medium to the first evaporator 12; the first evaporator 12 is used to heat the liquid working medium with the external input medium to obtain steam working medium, and transport the steam working medium to the absorber 14; the absorber 14 is used to dilute the concentrated working medium with the steam working medium to obtain liquid working medium, and transport the liquid working medium to the first generator 11; the first condenser 13 and the absorber 14 are also used to transfer the heat generated during condensation and dilution to the low-temperature cooling water transported by the second evaporator 31 to obtain high-temperature cooling water, and transport the high-temperature cooling water to the first evaporator 12; The refrigerant is sent to the second evaporator 31; the second evaporator 31 is used to heat the low-temperature and low-pressure refrigerant transported by the throttling mechanism 23 with high-temperature cooling water to obtain low-temperature and low-pressure gaseous refrigerant and low-temperature cooling water, and the low-temperature and low-pressure gaseous refrigerant is transported to the first compressor 21; the first compressor 21 is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and transport the high-temperature and high-pressure gaseous refrigerant to the steam generator 22; the steam generator 22 is used to heat the low-temperature water transported from the outside with the high-temperature and high-pressure gaseous refrigerant to obtain low-pressure steam and liquid refrigerant, and the low-pressure steam and liquid refrigerant are transported to the water vapor compressor 24 and the throttling mechanism 23 respectively; the throttling mechanism 23 is used to reduce the pressure of the liquid refrigerant into a low-temperature and low-pressure refrigerant; the water vapor compressor 24 is used to compress the low-pressure steam into high-pressure steam.

[0042] Furthermore, a flash evaporation type cooling and steam supply system without intermediate circulating water comprises: a waste heat driven absorption refrigerator 1 and a second flash evaporation type high temperature steam heat pump 5 connected in both directions; the waste heat driven absorption refrigerator 1 comprises: a first generator 11, a first evaporator 12, an absorber 14 and a first condenser 13; the second flash evaporation type high temperature steam heat pump 5 comprises: a first compressor 21, a throttling mechanism 23, a second condenser 32, a flash evaporation generator 33 and a water vapor compressor 24;

[0043] The first generator 11 and the first condenser 13 are arranged in the first cylinder; the absorber 14 and the first evaporator 12 are arranged in the second cylinder; there is a liquid working medium in the first generator 11; the inlet of the absorber 14 and the outlet of the first condenser 13 are respectively connected to the outlet of the throttling mechanism 23 and the inlet of the first compressor 21; the inlet and outlet of the input end of the second condenser 32 are respectively connected to the outlet of the first compressor 21 and the inlet of the throttling mechanism 23; the inlet and outlet of the output end of the second condenser 32 are respectively connected to the outlet and inlet of the input end of the flash generator 33; a water replenishment port is arranged on the outlet pipeline of the input end of the flash generator 33; the outlet of the output end of the flash generator 33 is connected to the inlet of the water vapor compressor 24;

[0044] The first generator 11 is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and concentrated working medium to the first condenser 13 and absorber 14 respectively; the first condenser 13 is used to condense the steam working medium into a liquid working medium, and transport the liquid working medium to the first evaporator 12; the first evaporator 12 is used to heat the liquid working medium with the external input medium to obtain steam working medium, and transport the steam working medium to the absorber 14; the absorber 14 is used to dilute the concentrated working medium with the steam working medium to obtain liquid working medium, and transport the liquid working medium to the first generator 11; the first condenser 13 and the absorber 14 are also used to transfer the heat generated during condensation and dilution to the low-temperature and low-pressure refrigerant transported by the throttling mechanism 23 to obtain a low-temperature and low-pressure gaseous working medium. refrigerant, and transports the low-temperature and low-pressure gaseous refrigerant to the first compressor 21; the first compressor 21 is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and transport the high-temperature and high-pressure gaseous refrigerant to the second condenser 32; the second condenser 32 is used to heat the low-temperature flash water transported by the flash generator 33 with the high-temperature and high-pressure gaseous refrigerant to obtain high-temperature flash water and liquid refrigerant, and transport the high-temperature flash water and liquid refrigerant to the flash generator 33 and the throttling mechanism 23 respectively; the throttling mechanism 23 is used to reduce the pressure of the liquid refrigerant to a low-temperature and low-pressure refrigerant; the flash generator 33 is used to flash the high-temperature flash water to obtain low-temperature flash water and low-pressure steam; the water replenishment port is used to supplement the steam flash evaporation amount; the water vapor compressor 24 is used to compress the low-pressure steam into high-pressure steam.

[0045] Furthermore, the waste heat driven absorption refrigeration machine 1 is composed of a first generator 11, a first evaporator 12, an absorber 14, a first condenser 13, and auxiliary components and pipelines. The waste heat in the process enters the first generator 11 as a driving heat source to drive the unit to operate, and the waste heat driven absorption refrigeration machine 1 continuously prepares process cooling through the first evaporator 12. The low-temperature and low-pressure refrigerant of the direct generation type high-temperature steam heat pump flows through the absorber 14 and the first condenser 13 to take away heat. The direct generation type high-temperature steam heat pump 2 is composed of a first compressor 21, a throttling mechanism 23, a steam generator 22, a water vapor compressor 24, and auxiliary components and pipelines. Different from the conventional electric-driven steam heat pump, the direct generation type high-temperature steam heat pump 2 of this embodiment uses a steam generator 22 to replace the first condenser 13 and the flash generator 33. The steam generator 22 can directly heat the make-up water into low-pressure steam output without flash loss, and the overall efficiency is higher. In addition, the liquid coolant and refrigerant exchange heat directly, eliminating the need for intermediate circulating water, reducing one heat exchange process and improving heat exchange efficiency.

[0046] Specifically, the operation process of the integrated cooling and steam supply system is as follows:

[0047] 1) The waste heat is used as a driving heat source and enters the first generator 11 of the waste heat driven absorption refrigerator 1 to drive the absorption refrigerator to operate;

[0048] 2) The driving force recovers the heat of the input medium in the first evaporator 12. After the temperature of the input medium is reduced, it is transported to the load point to achieve a cooling effect. The temperature of the medium increases and returns to the first evaporator 12 to cool down again.

[0049] 3) The driving heat of the first generator 11 and the cooling capacity of the first evaporator 12 are transferred to the absorber 14 and the first condenser 13;

[0050] 4) The absorber 14 and the first condenser 13 transfer heat to the refrigerant in the direct generation high temperature steam heat pump 2;

[0051] 5) The first compressor 21 compresses the refrigerant vapor at the outlet of the first condenser 13 to a high temperature and high pressure state, and the high temperature and high pressure refrigerant releases heat through the steam generator 22 and becomes liquid;

[0052] 6) The liquid refrigerant output from the steam generator 22 is depressurized by the throttling mechanism 23;

[0053] 7) The refrigerant after the throttling mechanism absorbs the heat of the liquid refrigerant in the waste heat driven absorption refrigerator 1 through the absorber 14 and the first condenser 13, and becomes saturated or superheated steam;

[0054] 8) The heat of the steam generator 22 is released to the external make-up water, heating the make-up water into low-pressure steam;

[0055] 9) The low-pressure steam at the outlet of the steam generator 22 is pressurized by the water vapor compressor 24 and becomes high-pressure steam.

[0056] The beneficial effects of the present invention are as follows:

[0057] (1) The present invention combines a waste heat driven absorption refrigerator and a direct generation high temperature steam heat pump, thereby realizing the recovery of waste heat from the process, the preparation of cold required for process cooling, air conditioning refrigeration or freezing and refrigeration, and the preparation of high pressure steam for process production.

[0058] (2) The present invention innovatively incorporates a direct-generation high-temperature steam heat pump into the system, recovering the heat that the waste heat-driven absorption chiller would otherwise have to dissipate through the cooling tower, thereby achieving zero waste heat emissions.

[0059] (3) The direct generation high-temperature steam heat pump used in the present invention is different from the conventional hot water + flash evaporation steam generation form, has no flash evaporation loss, and has higher overall efficiency.

[0060] (4) The present invention uses the absorber and the first condenser together as the evaporator of the high-temperature steam heat pump, eliminating the need for intermediate circulating water, reducing one heat exchange process, and improving the heat exchange efficiency.

[0061] (5) The cooling and steam supply are integrated, the unit system is compact and occupies a small area.

[0062] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0063] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An integrated cooling and steam supply system, characterized in that: include: A waste heat driven absorption refrigerator and a first direct generation high temperature steam heat pump connected in both directions; The waste heat driven absorption refrigerator comprises: a first generator, a first evaporator, an absorber and a first condenser; the first direct generation high temperature steam heat pump comprises: a first compressor, a throttling mechanism, a steam generator and a water vapor compressor; The first generator and the first condenser are arranged in a first cylinder; the absorber and the first evaporator are arranged in a second cylinder; there is a liquid working medium in the first generator; the inlet of the absorber and the outlet of the first condenser are respectively connected to the outlet of the throttling mechanism and the inlet of the first compressor; the inlet and outlet of the input end of the steam generator are respectively connected to the outlet of the first compressor and the inlet of the throttling mechanism; the inlet and outlet of the output end of the steam generator are respectively connected to a preset water supply pipeline and the inlet of the water vapor compressor; The first generator is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and the concentrated working medium to the first condenser and the absorber respectively; the first condenser is used to condense the steam working medium into the liquid working medium, and transport the liquid working medium to the first evaporator; the first evaporator is used to heat the liquid working medium with the external input medium to obtain the steam working medium, and transport the steam working medium to the absorber; the absorber is used to dilute the concentrated working medium with the steam working medium to obtain the liquid working medium, and transport the liquid working medium to the first generator; the first condenser and The absorber is also used to transfer the heat generated during condensation and dilution to the low-temperature and low-pressure refrigerant transported by the throttling mechanism to obtain a low-temperature and low-pressure gaseous refrigerant, and transport the low-temperature and low-pressure gaseous refrigerant to the first compressor; the first compressor is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant; the steam generator is used to convert the low-temperature water input from the outside into low-pressure steam by absorbing the heat of the high-temperature and high-pressure gaseous refrigerant to obtain a liquid refrigerant, and transport the liquid refrigerant to the throttling mechanism; the throttling mechanism is used to reduce the pressure of the liquid refrigerant to the low-temperature and low-pressure refrigerant; the water vapor compressor is used to compress the low-pressure steam into high-pressure steam.

2. The integrated cooling and steam supply system according to claim 1, characterized in that: The external input medium includes: water and ice slurry.

3. A flash evaporation cooling and steam supply system with intermediate circulating water, characterized in that: include: A waste heat driven absorption chiller and a first flash evaporation high temperature steam heat pump connected in both directions; The waste heat driven absorption refrigerator comprises: a first generator, a first evaporator, an absorber and a first condenser; the first flash evaporation high temperature steam heat pump comprises: a first compressor, a throttling mechanism, a second evaporator, a second condenser, a flash evaporation generator and a water vapor compressor; The first generator and the first evaporator are arranged in a first cylinder; the absorber and the first condenser are arranged in a second cylinder; there is a liquid working medium in the first generator; the inlet of the absorber and the outlet of the first condenser are respectively connected to the outlet and inlet of the input end of the second evaporator; the inlet and outlet of the output end of the second evaporator are respectively connected to the outlet of the throttling mechanism and the inlet of the first compressor; the inlet and outlet of the input end of the second condenser are respectively connected to the outlet of the first compressor and the inlet of the throttling mechanism; the inlet and outlet of the output end of the second condenser are respectively connected to the outlet and inlet of the input end of the flash generator; a water replenishment port is provided on the outlet pipeline of the input end of the flash generator; the outlet of the output end of the flash generator is connected to the inlet of the water vapor compressor; The first generator is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and the concentrated working medium to the first condenser and the absorber respectively; the first condenser is used to condense the steam working medium into the liquid working medium, and transport the liquid working medium to the first evaporator; the first evaporator is used to heat the liquid working medium with the external input medium to obtain the steam working medium, and transport the steam working medium to the absorber; the absorber is used to dilute the concentrated working medium with the steam working medium to obtain the liquid working medium, and transport the liquid working medium to the first generator; the first condenser and the absorber are also used to transfer the heat generated during condensation and dilution to the low-temperature cooling water transported by the second evaporator to obtain high-temperature cooling water, and transport the high-temperature cooling water to the second evaporator; the second evaporator is used to heat the liquid working medium with the high-temperature cooling medium The water heats the low-temperature and low-pressure refrigerant transported by the throttling mechanism to obtain a low-temperature and low-pressure gaseous refrigerant and the low-temperature cooling water, and transports the low-temperature and low-pressure gaseous refrigerant to the first compressor; the first compressor is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and transports the high-temperature and high-pressure gaseous refrigerant to the second condenser; the second condenser is used to heat the low-temperature flash water transported by the flash generator with the high-temperature and high-pressure gaseous refrigerant to obtain high-temperature flash water and liquid refrigerant, and transport the high-temperature flash water and the liquid refrigerant to the flash generator and the throttling mechanism respectively; the throttling mechanism is used to reduce the pressure of the liquid refrigerant to the low-temperature and low-pressure refrigerant; the flash generator is used to flash the high-temperature flash water to obtain the low-temperature flash water and low-pressure steam; the water replenishment port is used to supplement the steam flash volume; the water vapor compressor is used to compress the low-pressure steam into high-pressure steam.

4. A direct cooling and steam supply system with intermediate circulating water, characterized in that: include: A waste heat driven absorption refrigerator and a second direct generation high temperature steam heat pump connected in two directions; the waste heat driven absorption refrigerator comprises: a first generator, a first evaporator, an absorber and a first condenser; the second direct generation high temperature steam heat pump comprises: a first compressor, a throttling mechanism, a second evaporator, a steam generator and a water vapor compressor; The first generator and the first condenser are arranged in a first cylinder; the absorber and the first evaporator are arranged in a second cylinder; there is a liquid working medium in the first generator; the inlet of the absorber and the outlet of the first condenser are respectively connected to the outlet and inlet of the input end of the second evaporator; the inlet and outlet of the output end of the second evaporator are respectively connected to the outlet of the throttling mechanism and the inlet of the first compressor; the inlet and outlet of the input end of the steam generator are respectively connected to the outlet of the first compressor and the inlet of the throttling mechanism; the inlet and outlet of the output end of the steam generator are respectively connected to a preset water supply pipeline and the inlet of the water vapor compressor; The first generator is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and the concentrated working medium to the first condenser and the absorber respectively; the first condenser is used to condense the steam working medium into the liquid working medium, and transport the liquid working medium to the first evaporator; the first evaporator is used to heat the liquid working medium with the external input medium to obtain the steam working medium, and transport the steam working medium to the absorber; the absorber is used to dilute the concentrated working medium with the steam working medium to obtain the liquid working medium, and transport the liquid working medium to the first generator; the first condenser and the absorber are also used to transfer the heat generated during condensation and dilution to the low-temperature cooling water transported by the second evaporator to obtain high-temperature cooling water, and transport the high-temperature cooling water to the absorber. The cooling water is transported to the second evaporator; the second evaporator is used to use the high-temperature cooling water to heat the low-temperature and low-pressure refrigerant transported by the throttling mechanism to obtain a low-temperature and low-pressure gaseous refrigerant and the low-temperature cooling water, and the low-temperature and low-pressure gaseous refrigerant is transported to the first compressor; the first compressor is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and transport the high-temperature and high-pressure gaseous refrigerant to the steam generator; the steam generator is used to use the high-temperature and high-pressure gaseous refrigerant to heat the low-temperature water transported from the outside to obtain low-pressure steam and liquid refrigerant, and the low-pressure steam and the liquid refrigerant are transported to the water vapor compressor and the throttling mechanism respectively; the throttling mechanism is used to reduce the pressure of the liquid refrigerant to the low-temperature and low-pressure refrigerant; the water vapor compressor is used to compress the low-pressure steam into high-pressure steam.

5. A flash evaporation cooling and steam supply system without intermediate circulating water, characterized in that: include: A two-way connected waste heat driven absorption chiller and a second flash evaporation high temperature steam heat pump; The waste heat driven absorption refrigerator comprises: a first generator, a first evaporator, an absorber and a first condenser; the second flash evaporation high temperature steam heat pump comprises: a first compressor, a throttling mechanism, a second condenser, a flash evaporation generator and a water vapor compressor; The first generator and the first condenser are arranged in a first cylinder; the absorber and the first evaporator are arranged in a second cylinder; there is a liquid working medium in the first generator; the inlet of the absorber and the outlet of the first condenser are respectively connected to the outlet of the throttling mechanism and the inlet of the first compressor; the inlet and outlet of the input end of the second condenser are respectively connected to the outlet of the first compressor and the inlet of the throttling mechanism; the inlet and outlet of the output end of the second condenser are respectively connected to the outlet and inlet of the input end of the flash generator; a water replenishment port is arranged on the outlet pipeline of the input end of the flash generator; the outlet of the output end of the flash generator is connected to the inlet of the water vapor compressor; The first generator is used to absorb the external input waste heat through the liquid working medium to obtain steam working medium and concentrated working medium, and transport the steam working medium and the concentrated working medium to the first condenser and the absorber respectively; the first condenser is used to condense the steam working medium into the liquid working medium, and transport the liquid working medium to the first evaporator; the first evaporator is used to heat the liquid working medium with the external input medium to obtain the steam working medium, and transport the steam working medium to the absorber; the absorber is used to dilute the concentrated working medium with the steam working medium to obtain the liquid working medium, and transport the liquid working medium to the first generator; the first condenser and the absorber are also used to transfer the heat generated during condensation and dilution to the low-temperature and low-pressure refrigerant transported by the throttling mechanism to obtain the low-temperature and low-pressure gas refrigerant, and convey the low-temperature and low-pressure gaseous refrigerant to the first compressor; the first compressor is used to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and convey the high-temperature and high-pressure gaseous refrigerant to the second condenser; the second condenser is used to heat the low-temperature flash water conveyed by the flash generator with the high-temperature and high-pressure gaseous refrigerant to obtain high-temperature flash water and liquid refrigerant, and convey the high-temperature flash water and the liquid refrigerant to the flash generator and the throttling mechanism respectively; the throttling mechanism is used to reduce the pressure of the liquid refrigerant to the low-temperature and low-pressure refrigerant; the flash generator is used to flash the high-temperature flash water to obtain the low-temperature flash water and low-pressure steam; the water replenishment port is used to supplement the steam flash evaporation amount; the water vapor compressor is used to compress the low-pressure steam into high-pressure steam.

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