阅读说明：本技术 一种余热回收及烟气消白热泵机组 (Waste heat recovery and smoke white heat pump unit ) 是由 姜鉴明 姜鹤 于 2021-08-27 设计创作，主要内容包括：本发明提供了一种余热回收及烟气消白热泵机组,涉及热泵机组技术领域,包括热泵模块、水力模块和烟气模块,所述压缩机的排气口通过管道与冷凝器的制冷剂侧进口连通,所述冷凝器的制冷剂侧出口通过管道与膨胀阀连通,所述膨胀阀通过管道与蒸发器的制冷剂侧进口连通,所述冷水泵与冷冻水热泵回水口连通,本发明通过在锅炉排烟的烟囱上增加一个吸热的换热器,把烟气里的热量提取出来,温度降低以后,烟气中的水蒸气冷凝成液态,氮氧化物溶解到液态水中,这样既回收了热量,又降低烟气里的水蒸气和氮氧化物的含量；后面再增加一个放热的换热器,提高排烟温度,降低相对湿度,使得排到大气中以后不易形成白烟。(The invention provides a waste heat recovery and smoke gas white heat pump unit, which relates to the technical field of heat pump units and comprises a heat pump module, a hydraulic module and a smoke gas module, wherein an exhaust port of a compressor is communicated with a refrigerant side inlet of a condenser through a pipeline, a refrigerant side outlet of the condenser is communicated with an expansion valve through a pipeline, the expansion valve is communicated with a refrigerant side inlet of an evaporator through a pipeline, and a cold water pump is communicated with a water return port of a chilled water heat pump; and a heat exchanger for releasing heat is additionally arranged at the back, so that the exhaust smoke temperature is improved, and the relative humidity is reduced, so that white smoke is not easily formed after the exhaust smoke is exhausted into the atmosphere.)

1. The utility model provides a waste heat recovery and white heat pump unit of flue gas elimination which characterized in that: the heat pump system comprises a heat pump module (1), a hydraulic module (2) and a smoke module (3), wherein the heat pump module (1) comprises a compressor (101), a condenser (102), an expansion valve (103), an evaporator (104), a cold water pump (105) and a hot water pump (106), the condenser (102) and the evaporator (104) are both heat exchangers, one side of the condenser (102) is a refrigerant side, the other side of the condenser is a cooling water side, one side of the evaporator (104) is a refrigerant side, the other side of the evaporator is a chilled water side, an exhaust port of the compressor (101) is communicated with a refrigerant side inlet of the condenser (102) through a pipeline, a refrigerant side outlet of the condenser (102) is communicated with the expansion valve (103) through a pipeline, the expansion valve (103) is communicated with a refrigerant side inlet of the evaporator (104) through a pipeline, and a refrigerant side outlet of the evaporator (104) is communicated with an air suction port of the compressor (101) through a pipeline, the cooling water side of condenser (102) is equipped with cooling hydrothermal pump return water mouth (4) and cooling water heat pump supply water mouth (5), cold water pump (105) and cooling hydrothermal pump return water mouth (4) intercommunication, the refrigerated water side of evaporimeter (104) is equipped with refrigerated water heat pump return water mouth (6) and refrigerated water heat pump supply water mouth (7), cold water pump (105) and refrigerated water heat pump return water mouth (6) intercommunication.

2. The heat pump unit for recovering waste heat and eliminating smoke according to claim 1, wherein: the hydraulic module (2) comprises a tail end pressure equalizing tank (201), a heat recovery total water return port (202), a heat recovery total water supply port (203), a tail end boiler water supply port (204), a tail end boiler water return port (205), a tail end hot water supply pump (206), a tail end water supply port (207) and a tail end water return port (208), the heat recovery total water return port (202) is arranged at the left end of the lower side of the tail end pressure equalizing tank (201), the heat recovery main water supply opening (203) is arranged at the right end of the lower side of the tail end equalizing tank (201), the end boiler water supply port (204) is arranged at the right side of the end pressure equalizing tank (201), the tail-end boiler water return port (205) is arranged on the left side of the tail-end pressure equalizing tank (201), the tail end water supply opening (207) is communicated with the right end of the upper side of the tail end pressure equalizing tank (201), the tail end hot water supply pump (206) is communicated with the tail end water supply port (207), and the tail end water return port (208) is communicated with the left end of the upper side of the tail end pressure equalizing tank (201).

3. The heat pump unit for recovering waste heat and eliminating smoke according to claim 2, wherein: the smoke module (3) comprises a heat exchanger shell (301), a heat releasing heat exchanger (302), a heat absorbing heat exchanger (303), a heat recovery smoke water supply inlet (304), a heat recovery smoke water return inlet (305), a cold water smoke water supply inlet (306), a cold water smoke water return inlet (307), a water mixing valve (308) and a temperature sensor (309), wherein the heat releasing heat exchanger (302) and the heat absorbing heat exchanger (303) are sequentially arranged in an inner cavity of the heat exchanger shell (301) from top to bottom, the heat recovery smoke water supply inlet (304) and the heat recovery smoke water return inlet (305) are respectively communicated with two ends of the heat releasing heat exchanger (302), the water mixing valve (308) is provided with three interfaces, two interfaces are communicated between pipelines where the heat releasing heat exchanger (302) and the cooling water smoke water return inlet (305) are located, the other interface of the water mixing valve (308) is connected with the cooling water smoke water supply inlet (304), the cold water smoke water supply inlet (306) and the cold water smoke water return inlet (307) are communicated with two ends of the heat absorbing heat exchanger (303), the temperature sensor (309) is mounted on a side wall of the heat exchanger housing (301).

4. The heat pump unit for recovering waste heat and eliminating smoke according to claim 3, wherein: the top of the heat exchanger shell (301) is provided with a flue gas outlet (8), and the bottom of the heat exchanger shell (301) is provided with a flue gas inlet (9).

5. The heat pump unit for recovering waste heat and eliminating smoke according to claim 3, wherein: the heat recovery heat pump water supply port (5) is communicated with the heat recovery main water supply port (203), and the heat recovery flue gas water return port (305) is communicated with the heat recovery main water return port (202).

6. The heat pump unit for recovering waste heat and eliminating smoke according to claim 3, wherein: the heat recovery flue gas water supply port (304) is communicated with a heat recovery heat pump water return port (4), the cold water flue gas water return port (307) is communicated with a cold water heat pump water supply port (7), and the cold water flue gas water supply port (306) is communicated with a chilled water heat pump water return port (6).

7. The heat pump unit for recovering waste heat and eliminating smoke according to claim 1, wherein: the flue gas module (3) and the heat pump module (1) are provided with a plurality of groups and are connected with the water conservancy module (2) in parallel through a pipeline.

8. The heat pump unit for recovering waste heat and eliminating smoke according to claim 2, wherein: and a plurality of groups of tail end hot water supply pumps (206), tail end water supply ports (207) and tail end water return ports (208) are arranged.

Technical Field

The invention relates to the technical field of heat pump units, in particular to a waste heat recovery and smoke whitening heat pump unit.

Background

The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy; the boiler comprises a boiler and a furnace, hot water or steam generated in the boiler can directly provide heat energy required by industrial production and people life, can be converted into mechanical energy through a steam power device, or can be converted into electric energy through a generator; the boiler for supplying hot water is called a hot water boiler, is mainly used for life and has a small amount of application in industrial production; the boiler for generating steam is called as a steam boiler, often called as a boiler for short, and is widely used for thermal power stations, ships, locomotives and industrial and mining enterprises.

The invention designs a waste heat recovery and smoke white heat elimination pump unit based on the fact that a large amount of heat exists in smoke of a boiler, the heat has good recovery value, the existing heat exchanger has poor absorption effect when absorbing heat of the smoke, and the smoke is easy to form white smoke after absorbing heat and being exhausted, so that the problems are solved.

Disclosure of Invention

The invention aims to provide a waste heat recovery and smoke whitening heat pump unit to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a waste heat recovery and flue gas white heat pump unit comprises a heat pump module, a hydraulic module and a flue gas module, wherein the heat pump module comprises a compressor, a condenser, an expansion valve, an evaporator, a cold water pump and a hot water pump, the condenser and the evaporator are both heat exchangers, one side of the condenser is a refrigerant side, the other side of the condenser is a cooling water side, one side of the evaporator is a refrigerant side, the other side of the evaporator is a chilled water side, an exhaust port of the compressor is communicated with a refrigerant side inlet of the condenser through a pipeline, a refrigerant side outlet of the condenser is communicated with the expansion valve through a pipeline, the expansion valve is communicated with the refrigerant side inlet of the evaporator through a pipeline, the refrigerant side outlet of the evaporator is communicated with an air suction port of the compressor through a pipeline, and a cooling water heat pump water return port and a cooling water heat pump water supply port are arranged on the cooling water side of the condenser, the cold water pump is communicated with a cooling water heat pump water return opening, a chilled water side of the evaporator is provided with a chilled water heat pump water return opening and a chilled water heat pump water supply opening, and the cold water pump is communicated with the chilled water heat pump water return opening.

Preferably, the water conservancy module includes terminal pressure-equalizing tank, the total return water mouth of heat recovery, the total water supply mouth of heat recovery, terminal boiler water supply mouth, terminal boiler return water mouth, terminal heat supply water pump, terminal water supply mouth and terminal return water mouth, the total return water mouth of heat recovery sets up the left end at terminal pressure-equalizing tank downside, the total water supply mouth of heat recovery sets up the right-hand member at terminal pressure-equalizing tank downside, terminal boiler water supply mouth sets up the right side at terminal pressure-equalizing tank, terminal boiler return water mouth sets up the left side at terminal pressure-equalizing tank, the right-hand member of terminal water supply mouth intercommunication at terminal pressure-equalizing tank upside, terminal heat supply water pump and terminal water supply mouth intercommunication, terminal return water mouth intercommunication all presses the left end of jar upside at the end.

Preferably, the flue gas module comprises a heat exchanger shell, a heat-releasing heat exchanger, a heat-absorbing heat exchanger, a heat-recovering flue gas water supply inlet, a heat-recovering flue gas water return inlet, a cold water flue gas water supply inlet, a cold water flue gas water return inlet, a water mixing valve and a temperature sensor, wherein the heat-releasing heat exchanger and the heat-absorbing heat exchanger are sequentially arranged in an inner cavity of the heat exchanger shell from top to bottom, the heat-recovering flue gas water supply inlet and the heat-recovering flue gas water return inlet are respectively communicated with two ends of the heat-releasing heat exchanger, the water mixing valve is provided with three interfaces, the two interfaces are communicated between pipelines where the heat-releasing heat exchanger and the cooling water flue gas water return inlet are located, the other interface of the water mixing valve is connected with the cooling water flue gas water supply inlet, the cold water flue gas water supply inlet and the cold water flue gas water return inlet are communicated with two ends of the heat-absorbing heat exchanger, and the temperature sensor is installed on the side wall of the heat exchanger shell.

Preferably, the top of the heat exchanger shell is provided with a flue gas outlet, and the bottom of the heat exchanger shell is provided with a flue gas inlet.

Preferably, the heat recovery heat pump water supply opening is communicated with the heat recovery main water supply opening, and the heat recovery flue gas water return opening is communicated with the heat recovery main water return opening.

Preferably, the heat recovery flue gas water supply port is communicated with a heat recovery heat pump water return port, the cold water flue gas water return port is communicated with a cold water heat pump water supply port, and the cold water flue gas water supply port is communicated with a chilled water heat pump water return port.

Preferably, the flue gas module and the heat pump module are provided with a plurality of groups and are connected with the water conservancy module in parallel through a pipeline.

Preferably, the tail end water supply and heating pump, the tail end water supply port and the tail end water return port are all provided with multiple groups.

Compared with the prior art, the invention has the beneficial effects that: the invention extracts the heat in the smoke by adding a heat-absorbing heat exchanger on a chimney for discharging the smoke from the boiler, after the temperature is reduced, the water vapor in the smoke is condensed into liquid, and the nitrogen oxide is dissolved in the liquid water, thereby not only recovering the heat, but also reducing the content of the water vapor and the nitrogen oxide in the smoke; a heat exchanger for releasing heat is added at the back, so that the exhaust gas temperature is improved, and the relative humidity is reduced, so that white smoke is not easily formed after the exhaust gas is exhausted into the atmosphere;

the heat-absorbing heat exchanger is connected with the evaporator of the heat pump, chilled water is introduced, the heat-releasing heat exchanger is connected with the condenser of the heat pump, cooling water is introduced, and the cooling water of the heat pump is simultaneously communicated with a heat supply pipe network at the tail end to supply heat; the branch of heating flue gas and heating end heating is adjusted through mixing the water valve, and the distribution flow, the basis of adjusting is exhaust gas temperature to measure through temperature sensor, PID adjusts, reaches the effect of accurate control heat distribution.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the connection of the present invention;

FIG. 2 is a schematic diagram of the module connection according to the present invention;

FIG. 3 is a schematic view of a heat pump module according to the present invention;

FIG. 4 is a schematic diagram of a hydraulic module structure according to the present invention;

FIG. 5 is a schematic view of the structure of the flue gas module of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-heat pump module, 101-compressor, 102-condenser, 103-expansion valve, 104-evaporator, 105-cold water pump, 106-hot water pump, 2-hydraulic module, 201-end pressure equalizing tank, 202-heat recovery total water return port, 203-heat recovery total water supply port, 204-end boiler water supply port, 205-end boiler water return port, 206-end water supply pump, 207-end water supply port, 208-end water return port, 3-flue gas module, 301-heat exchanger housing, 302-heat releasing heat exchanger, 303-heat absorbing heat exchanger, 304-heat recovery flue gas water supply port, 305-heat recovery flue gas water return port, 306-cold water flue gas water supply port, 307-cold water flue gas return port, 308-water mixing valve, 309-temperature sensor, 4-a heat recovery heat pump water return port, 5-a heat recovery heat pump water supply port, 6-a cold water heat pump water return port, 7-a cold water heat pump water supply port, 8-a flue gas outlet and 9-a flue gas inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a waste heat recovery and flue gas white heat pump unit comprises a heat pump module 1, a hydraulic module 2 and a flue gas module 3, wherein the heat pump module 1 comprises a compressor 101, a condenser 102, an expansion valve 103, an evaporator 104, a cold water pump 105 and a hot water pump 106, the condenser 102 and the evaporator 104 are both heat exchangers, one side of the condenser 102 is a refrigerant side, the other side of the condenser 102 is a cooling water side, one side of the evaporator 104 is a refrigerant side, the other side of the evaporator is a freezing water side, an exhaust port of the compressor 101 is communicated with a refrigerant side inlet of the condenser 102 through a pipeline, a refrigerant side outlet of the condenser 102 is communicated with the expansion valve 103 through a pipeline, the expansion valve 103 is communicated with a refrigerant side inlet of the evaporator 104 through a pipeline, a refrigerant side outlet of the evaporator 104 is communicated with an air suction port of the compressor 101 through a pipeline, a cooling water heat pump water return port 4 and a cooling water heat pump water supply port 5 are arranged on the cooling water side of the condenser 102, the cold water pump 105 is communicated with the cooling water heat pump water return port 4, the chilled water side of the evaporator 104 is provided with a chilled water heat pump water return port 6 and a chilled water heat pump water supply port 7, and the cold water pump 105 is communicated with the chilled water heat pump water return port 6.

Wherein, the hydraulic module 2 comprises a tail end pressure equalizing tank 201, a heat recovery total water return inlet 202, a heat recovery total water supply inlet 203, a tail end boiler water supply inlet 204, a tail end boiler water return inlet 205, a tail end heat supply water pump 206, a tail end water supply inlet 207 and a tail end water return inlet 208, the heat recovery total water return inlet 202 is arranged at the left end of the lower side of the tail end pressure equalizing tank 201, the heat recovery total water supply inlet 203 is arranged at the right end of the lower side of the tail end pressure equalizing tank 201, the tail end boiler water supply inlet 204 is arranged at the right side of the tail end pressure equalizing tank 201, the tail end boiler water return inlet 205 is arranged at the left side of the tail end pressure equalizing tank 201, the tail end water supply inlet 207 is communicated with the right end of the upper side of the tail end pressure equalizing tank 201, the tail end heat supply water pump 206 is communicated with the tail end water supply inlet 207, the tail end water return inlet 208 is communicated with the left end of the upper side of the tail end pressure equalizing tank 201, the hydraulic module is designed in a distributed circulation water supply mode, the number of the tail end heat supply water pumps is configured according to the actual zoning situation, forming tail end water circulation with the tail end pressure equalizing tank; the tail-end boiler water supply port and the tail-end boiler water return port are connected to the tail-end pressure equalizing tank at the same time to form tail-end boiler circulation; the heat recovery main water supply port and the heat recovery main water return port are simultaneously connected to the tail end pressure equalizing tank to form a heat recovery cycle; three kinds of circulating water are mixed in the terminal pressure equalizing tank, and the distributed circulating water supply mode is favorable for hydraulic balance adjustment and is convenient for energy-saving operation.

Wherein, the smoke module 3 comprises a heat exchanger shell 301, a heat releasing heat exchanger 302, a heat absorbing heat exchanger 303, a heat recovering smoke water supply inlet 304, a heat recovering smoke water return inlet 305, a cold water smoke water supply inlet 306, a cold water smoke water return inlet 307, a water mixing valve 308 and a temperature sensor 309, the heat releasing heat exchanger 302 and the heat absorbing heat exchanger 303 are sequentially arranged in the inner cavity of the heat exchanger shell 301 from top to bottom, the heat recovering smoke water supply inlet 304 and the heat recovering smoke water return inlet 305 are respectively communicated with two ends of the heat releasing heat exchanger 302, the water mixing valve 308 has three interfaces, two interfaces are communicated between the heat releasing heat exchanger 302 and a pipeline where the cooling water smoke water return inlet 305 is positioned, the other interface of the water mixing valve 308 is connected with the cooling water smoke water supply inlet 304, the cold water smoke water supply inlet 306 and the cold water smoke water return inlet 307 are communicated with two ends of the heat absorbing heat exchanger 303, the temperature sensor 309 is arranged on the side wall of the heat exchanger shell 301, high-temperature flue gas (60 ℃) enters from a flue gas inlet, passes through a heat absorption heat exchanger, is cooled to a low-temperature state (10 ℃), at the moment, water vapor dissolves nitric oxide in the flue gas, condenses into liquid and flows back to the bottom of a boiler flue, the temperature of the cooled flue gas passes through a heat release heat exchanger, the temperature is increased (20 ℃), the relative humidity is reduced, the flue gas is discharged from a flue gas outlet, and white smoke is not easily formed.

Wherein, the top of heat exchanger shell 301 is equipped with flue gas export 8, and the bottom of heat exchanger shell 301 is equipped with flue gas import 9, through 9 intercommunication boiler flues of flue gas inlet.

Wherein, the heat recovery heat pump water supply port 5 is communicated with the heat recovery main water supply port 203, and the heat recovery flue gas water return port 305 is communicated with the heat recovery main water return port 202.

The heat recovery flue gas water supply port 304 is communicated with the heat recovery heat pump water return port 4, the cold water flue gas water return port 307 is communicated with the cold water heat pump water supply port 7, and the cold water flue gas water supply port 306 is communicated with the cold water hot air water return port 6.

Wherein, flue gas module 3 and heat pump module 1 are equipped with the multiunit (also can be a set of), and pass through the pipeline with water conservancy module 2 and connect in parallel.

Wherein, the tail end water supply pump 206, the tail end water supply port 207 and the tail end water return port 208 are all provided with a plurality of groups (or a group).

One specific application of this embodiment is:

the heat pump module of the invention has three cycles, namely a cold water cycle, a heat recovery cycle and a refrigerant cycle, and three relatively closed structures. The refrigerant cycle is filled with a refrigerant, the chilled water cycle is filled with chilled water, and the cooling water cycle is filled with cooling water, wherein the three working media are relatively closed but can transfer heat;

the cold water circulation is responsible for absorbing the heat in the high temperature flue gas to the evaporimeter, and the heat pump circulation is responsible for carrying the heat in the evaporimeter to the condenser, and the heat recovery circulation is responsible for sending the heat to water conservancy module, for the end heat supply.

And (3) cold water circulation: the chilled water is led to the evaporator from the cold water pump, the cold water emits heat to the refrigerant side in the evaporator, the temperature is reduced, then the chilled water is led to the heat absorption heat exchanger to absorb the waste heat of the flue gas, the temperature of the chilled water is increased, and the chilled water is led to the cold water pump to circulate in a reciprocating mode.

Refrigerant circulation: the refrigerant is led to the refrigerant side of the condenser from the exhaust side of the compressor, releases heat to the heat-releasing heat exchanger, is condensed into low-temperature high-pressure liquid refrigerant, is decompressed by the expansion valve, is led to the refrigerant side of the evaporator to be evaporated, absorbs heat in the heat-absorbing heat exchanger, is changed into low-temperature gaseous refrigerant after being evaporated, is led to the suction side of the compressor to be changed into high-temperature high-pressure gaseous state after being applied with work by the compressor, and is circulated in a reciprocating mode.

And (3) heat recovery circulation: the cooling water is led to the condenser from the hot water pump, the hot water absorbs the heat of the refrigerant in the condenser, the temperature is increased, then the hot water is led to the heat-releasing heat exchanger to heat the flue gas, the temperature of the cooling water is reduced, and the cooling water is led to the hot water pump to circulate in a reciprocating mode.

A water mixing valve is arranged between the heat recovery flue gas water supply pipe and the heat recovery flue gas water return pipe, and the flow between the heat releasing heat exchanger and the heat recovery flue gas water return pipe is distributed by adjusting the opening degree of the water mixing valve to adjust the final exhaust gas temperature. The opening of the water mixing valve is adjusted according to the exhaust smoke temperature, the exhaust smoke temperature of the smoke outlet is measured through the temperature sensor, the exhaust smoke temperature is higher than a set value (such as 20 ℃), the flow of the heat release heat exchanger is reduced, the flow of the heat recovery smoke return pipe is increased, the exhaust smoke temperature is lower than the set value (such as 20 ℃), the flow of the heat release heat exchanger is increased, the flow of the heat recovery smoke return pipe is reduced, PID adjustment is preferably adopted, and the effects of accurately controlling the exhaust smoke temperature and accurately distributing the heat recovery amount are achieved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.