CN110425560B - Integrated boiler system and control method thereof - Google Patents
Integrated boiler system and control method thereof Download PDFInfo
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- CN110425560B CN110425560B CN201910753608.4A CN201910753608A CN110425560B CN 110425560 B CN110425560 B CN 110425560B CN 201910753608 A CN201910753608 A CN 201910753608A CN 110425560 B CN110425560 B CN 110425560B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000003546 flue gas Substances 0.000 claims abstract description 60
- 238000011084 recovery Methods 0.000 claims abstract description 27
- 239000002918 waste heat Substances 0.000 claims abstract description 23
- 239000002028 Biomass Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000000498 cooling water Substances 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 15
- 239000000779 smoke Substances 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 12
- 230000001172 regenerating effect Effects 0.000 claims description 9
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 8
- 230000003009 desulfurizing effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 239000003344 environmental pollutant Substances 0.000 claims description 6
- 239000008236 heating water Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 231100000719 pollutant Toxicity 0.000 claims description 6
- 239000000356 contaminant Substances 0.000 claims description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides an integrated boiler system and a control method. The integrated boiler system comprises a boiler system, a heat-moisture exchange subsystem and a waste heat recovery heat pump subsystem. The efficiency of the fuel low-calorific-value boiler is more than 100%, the exhaust temperature is lower than 20 ℃, the heat of the fuel high-calorific-value boiler supplies heat to heat users, the tail flue gas of the boiler is directly discharged in treatment, and meanwhile, the flue gas is subjected to dust removal, desulfurization, denitration and white removal treatment, so that the ultralow emission of the biomass boiler is realized. The whole system forms an integrated device, has small occupied area, low initial investment and more compactness and concentration, and plays a positive pushing role in sustainable development of biomass boiler industry.
Description
Technical Field
The invention relates to the field of energy environment protection, in particular to an integrated boiler system and a control method thereof.
Background
The flue gas generated by the combustion of the existing biomass boiler still contains a large amount of waste heat, the waste heat cannot be effectively recycled, energy waste is caused, and the boiler efficiency is low. In addition, the flue gas contains a large amount of particulate matter PM and nitrogen oxides NO x Part of sulfur dioxide SO 2 The flue gas is discharged without treatment, which can cause air pollution. In the prior art, devices for desulfurizing, denitrating and whitening flue gas exist independently, the occupied space is large, and the initial investment is high. Therefore, the technical problem to be solved is to realize ultralow pollutant emission while recycling the waste heat of the flue gas. How to provide a biomass boiler system with intensive, miniaturized and low initial investment has great significance for environmental protection utilization of energy and sustainable development of biomass energy industry.
Disclosure of Invention
In view of the shortcomings and drawbacks of the prior art, the present invention provides an integrated boiler system 100 connected to a heat consumer 104 via pipes R1, R6 and forming a thermal circulation loop, the integrated boiler system comprising:
a boiler system 101;
a heat and humidity exchange subsystem 102;
a waste heat recovery heat pump subsystem 103;
the flue gas generated by the boiler subsystem 101 enters the heat-humidity exchange subsystem 102 through a first flue gas channel S1, the waste heat of the flue gas is recovered and the flue gas is purified in the heat-humidity exchange subsystem 102, and then the flue gas is discharged out of the heat-humidity exchange subsystem 102 from a second flue gas channel S2;
the evaporator side of the heat recovery heat pump subsystem 103 is communicated with the heat-moisture exchange subsystem 102 through pipelines L1, L2 and L3, an evaporator side heat exchange medium exchanges heat with flue gas in the heat-moisture exchange subsystem 102 and recovers heat of the flue gas, and then the heat returns to the heat recovery heat pump subsystem 103 and provides heat to an evaporator side heat exchanger of the heat recovery heat pump subsystem 103;
the condenser side of the heat recovery heat pump subsystem 103 is communicated with the heat consumer 104 through a pipeline R1, and the condenser side heat exchange medium flows out of the heat consumer 104, enters the condenser side heat exchanger side of the heat recovery heat pump subsystem 103 and heats up, then continuously enters the boiler subsystem 101, and flows into the heat consumer 104 after being further heated.
Further, the heat-humidity exchange subsystem 102 includes a high-temperature heat-humidity exchange chamber 1 and a low-temperature heat-humidity exchange chamber 2, a sprayer 4 is respectively disposed in the high-temperature heat-humidity exchange chamber 1 and the low-temperature heat-humidity exchange chamber 2, the flue gas enters the high-temperature heat-humidity exchange chamber 1 through a first flue gas channel S1, enters the low-temperature heat-humidity exchange chamber 2 through a third flue gas channel S3 after being subjected to spray heat exchange, and is discharged out of the heat-humidity exchange subsystem 102 through a second flue gas channel S2 after being subjected to further spray heat exchange.
Further, the heat-moisture exchange subsystem 102 further comprises a water treatment chamber 3, and the heat exchange medium falls into the water treatment chamber 3 at the bottom of the heat-moisture exchange subsystem after being sprayed.
Further, the heat recovery heat pump subsystem 103 further includes:
a regenerative heat exchanger 6, a high-temperature evaporator 7, a low-temperature evaporator 8, a condenser 9, a throttle 11 and a compressor 10;
the low temperature evaporator 8, the high temperature evaporator 7, the throttle 11, the condenser 9 and the compressor 10 are connected in sequence and form a refrigerant circuit.
Further, the evaporator side heat exchange medium flows out of the heat and humidity exchange subsystem 102, enters the regenerative heat exchanger 6 through the first cooling water end pipeline L1 and exchanges heat with the condenser side heat exchange medium, then flows out through the fourth cooling water end pipeline L4, and then is divided into two paths in parallel:
the method comprises the following steps: the evaporator side heat exchange medium enters the high-temperature heat and humidity exchange chamber 1 of the heat and humidity exchange subsystem 102 through a second cooling water end pipeline L2 and falls into the water treatment chamber 3 after being sprayed;
and two,: the evaporator side heat exchange medium enters the high temperature evaporator 7 through the fifth cooling water-end pipeline L5 and exchanges heat, then enters the low temperature evaporator 8 through the sixth cooling water-end pipeline L6 and exchanges heat, and then enters the low temperature heat and humidity exchange chamber 2 of the heat and humidity exchange subsystem 102 through the third cooling water-end pipeline L3 and falls into the water treatment chamber 3 after being sprayed.
Further, the condenser-side heat exchange medium flows out from the heat consumer 104, and two parallel paths are formed after the heat exchange medium passes through the first heating water-end pipeline R1:
the method comprises the following steps: the condenser side heat exchange medium enters the condenser 9 through a seventh heating water-end pipeline R7 and flows out of the second heating water-end pipeline R2 after being heated;
and two,: the condenser side heat exchange medium enters the regenerative heat exchanger 6 through an eighth heating water end pipeline R8 and exchanges heat with the evaporator side heat exchange medium, and then flows out through a third heating water end pipeline R3;
the heat exchange medium flowing out of the second heating water-end pipeline R2 and the third heating water-end pipeline R3 is mixed and then enters the boiler subsystem 101 through the fifth heating water-end pipeline R5.
Furthermore, the desulfurizing and pin-removing agent is added in the heat exchange medium at the evaporator side, and the heat exchange medium at the evaporator side has the desulfurizing and pin-removing effects on the flue gas after being sprayed in the heat-moisture exchange subsystem 102, so that substances such as sulfide and nitrogen oxides in the flue gas are reduced, and the effects of reducing the emission of smoke dust and eliminating white smoke are achieved.
Further, the water treatment chamber 3 treats the heat exchange medium and discharges the liquid containing the contaminants after treatment.
Further, the boilers in the boiler subsystem 101 are biomass boilers.
The invention also provides a control method of the integrated boiler system, which is characterized by comprising the following steps:
s1: setting a monitoring sensor at a key position in the system and collecting a monitoring value of the sensor;
s2: and controlling the operation of the system according to the collected monitoring value and controlling the parameters of the heat exchange medium and the discharged flue gas pollutants within a set range.
Further, the monitoring sensor includes one or more of temperature, flow rate, pressure of the heat exchange medium, one or more of temperature, flow rate, water quality of the removed contaminant-containing liquid, temperature, humidity, flow rate, pressure of the flue gas, soot particulate, nitrogen oxides, sulfur dioxide concentration.
The boiler integrated boiler system provided by the invention can recycle the waste heat of the flue gas, so that the efficiency of the fuel low-heat-value boiler is more than 100%, the exhaust temperature is lower than 20 ℃, the heat is recycled and high-grade heat is generated through the heat pump system, the heat supply to a heat user is realized, the dust removal, desulfurization, denitration and white removal treatment of the flue gas at the tail part of the boiler are realized, the direct emission standard is reached, and the ultralow emission of the biomass boiler is realized. And the whole system forms an integrated device, the occupied area is small, the initial investment is low, the system is more compact and intensive, and the system plays a positive pushing role in sustainable development of biomass boiler industry.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic view of a boiler integrated boiler system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the detailed construction of a boiler system integrated with a boiler according to an embodiment of the first aspect of the present invention;
icon: 100-an integrated boiler system; 101-a boiler subsystem; 102-a heat and humidity exchange subsystem; 103-a waste heat recovery heat pump subsystem; 104-hot user; 1-a high-temperature heat-humidity exchange chamber; 2-low temperature heat and humidity exchange chamber; 3-a water treatment chamber; 4-a sprayer; 5-a demister; 6-backheating a heat exchanger; 7-a high temperature evaporator; 8-a low temperature evaporator; 9-a condenser; 10-a compressor; 11-a throttle; L1-L6-first to sixth cooling water-end pipes; R1-R8-first to eighth heating water-end pipes; S1-S3-first to third flue gas channels.
Detailed Description
The construction and operation of the present patent will be further described in detail with reference to the accompanying drawings, which are provided solely for the purpose of better understanding of the present patent and are not to be construed as limiting the present patent. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
In the description of the present invention, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1-2, the present invention provides an integrated boiler system 100 connected to a heat consumer 104 via pipes R1, R6 and forming a thermal circulation loop, the integrated boiler system comprising:
a boiler system 101, a heat-moisture exchange subsystem 102 and a waste heat recovery heat pump subsystem 103.
The flue gas generated by the boiler subsystem 101 enters the heat-humidity exchange subsystem 102 through a first flue gas channel S1, in the heat-humidity exchange subsystem 102, the waste heat of the flue gas is recovered, the flue gas is purified, and then the flue gas is discharged out of the heat-humidity exchange subsystem 102 from a second flue gas channel S2.
The evaporator side of the heat recovery heat pump subsystem 103 is communicated with the heat and humidity exchange subsystem 102 through pipelines L1, L2 and L3, and an evaporator side heat exchange medium exchanges heat with flue gas in the heat and humidity exchange subsystem 102 and recovers heat of the flue gas, and then returns to the heat recovery heat pump subsystem 103 and provides heat to an evaporator side heat exchanger of the heat recovery heat pump subsystem 103.
The condenser side of the heat recovery heat pump subsystem 103 is communicated with the heat consumer 104 through a pipeline R1, and the condenser side heat exchange medium flows out of the heat consumer 104, enters the condenser side heat exchanger side of the heat recovery heat pump subsystem 103 and heats up, then continuously enters the boiler subsystem 101, and flows into the heat consumer 104 after being further heated.
In an optimized embodiment, the heat-humidity exchange subsystem 102 comprises a high-temperature heat-humidity exchange chamber 1 and a low-temperature heat-humidity exchange chamber 2, wherein a sprayer 4 is respectively arranged in the high-temperature heat-humidity exchange chamber 1 and the low-temperature heat-humidity exchange chamber 2, the flue gas enters the high-temperature heat-humidity exchange chamber 1 through a first flue gas channel S1, and is in countercurrent spray heat exchange with cold water in a first-stage sprayer 4 arranged above the high-temperature heat-humidity exchange chamber 1, so that the first-stage spray total heat exchange is realized, enters the low-temperature heat-humidity exchange chamber 2 through a third flue gas channel S3 after spray heat exchange, is continuously subjected to countercurrent spray heat exchange with cold water in a second-stage sprayer 4 arranged above the low-temperature heat-humidity exchange chamber 2, realizes the second-stage spray total heat exchange, and is discharged out of the heat-humidity exchange subsystem 102 through a demister 5 after further spray heat exchange therein, and is then discharged to the outside atmosphere through a flue connection chimney.
In an optimized embodiment, the heat-moisture exchange subsystem 102 further comprises a water treatment chamber 3, and the heat exchange medium falls into the water treatment chamber 3 at the bottom of the heat-moisture exchange subsystem after being sprayed. The water treatment chamber 3 treats the heat exchange medium and discharges the liquid containing the contaminants after treatment.
The heat recovery heat pump subsystem 103 further comprises:
a regenerative heat exchanger 6, a high-temperature evaporator 7, a low-temperature evaporator 8, a condenser 9, a throttle 11 and a compressor 10; the low temperature evaporator 8, the high temperature evaporator 7, the throttle 11, the condenser 9 and the compressor 10 are connected in sequence and form a refrigerant circuit.
The evaporator side heat exchange medium flows out of the heat and humidity exchange subsystem 102, enters the regenerative heat exchanger 6 through a first cooling water end pipeline L1 and exchanges heat with the condenser side heat exchange medium, then flows out through a fourth cooling water end pipeline L4, and is divided into two paths in parallel:
the method comprises the following steps: the evaporator side heat exchange medium enters the high-temperature heat and humidity exchange chamber 1 of the heat and humidity exchange subsystem 102 through a second cooling water end pipeline L2 and falls into the water treatment chamber 3 after being sprayed;
and two,: the evaporator side heat exchange medium enters the high-temperature evaporator 7 through a fifth cooling water end pipeline L5 and exchanges heat, then enters the low-temperature evaporator 8 through a sixth cooling water end pipeline L6 and exchanges heat, and after gradual cooling, the evaporator side heat exchange medium is communicated with the second-stage sprayer 4 of the low-temperature heat-humidity exchange chamber 2 through a third cooling water end pipeline L3 for spraying circulation, and falls into the water treatment chamber 3 after spraying.
The condenser side heat exchange medium flows out from the heat user 104, and passes through the first heating water-end pipeline R1 to form two parallel paths:
the method comprises the following steps: the condenser side heat exchange medium enters the condenser 9 through a seventh heating water-end pipeline R7 and flows out of the second heating water-end pipeline R2 after being heated;
and two,: the condenser side heat exchange medium enters the regenerative heat exchanger 6 through an eighth heating water end pipeline R8 and exchanges heat with the evaporator side heat exchange medium, and then flows out through a third heating water end pipeline R3;
the heat exchange medium flowing out of the second heating water-end pipeline R2 and the third heating water-end pipeline R3 is mixed and then enters the boiler subsystem 101 through the fifth heating water-end pipeline R5.
The boiler in the boiler subsystem 101 described in this embodiment is a biomass boiler. It will be appreciated that other types of boilers are also possible.
Through the heat pump cycle, the flue gas waste heat collected by the evaporator side of the waste heat recovery heat pump subsystem 103 and the electric power input of the waste heat recovery heat pump subsystem 103 are output to the condenser side of the waste heat recovery heat pump subsystem 103 and finally are transmitted to heat users, the flue gas temperature of the boiler subsystem is lower than 20 ℃, a large amount of water in the flue gas is condensed, the sensible heat and latent heat of the flue gas are greatly recovered, the boiler efficiency is higher than 100% according to the low-level heat value calculation of the fuel, and the total heat of the recovered flue gas is used for heat supply of the heat users 104.
The desulfurizing and pin-removing agent is added in the evaporator side heat exchange medium, and the evaporator side heat exchange medium is sprayed in the heat-moisture exchange subsystem 102 step by step to wash the flue gas and the chemical reaction together with a large amount of condensed water generated by the condensation of the flue gas, so that the desulfurizing and pin-removing effect is generated on the flue gas, substances such as sulfide and nitrogen oxides in the flue gas are reduced, and the effects of reducing the emission of smoke dust and eliminating white smoke are achieved.
The integrated boiler system of the embodiment forms an integrated device, has small occupied area, low initial investment and more compactness and concentration, and plays a positive promotion role in sustainable development of biomass boiler industry.
Example 2
Based on the same inventive concept, in combination with the above scheme, the invention also provides a control method of the integrated boiler system as described in embodiment 1, which is characterized by comprising the following steps:
s1: setting a monitoring sensor at a key position in the system and collecting a monitoring value of the sensor;
s2: and controlling the operation of the system according to the collected monitoring value and controlling the parameters of the heat exchange medium and the discharged flue gas pollutants within a set range.
In an optimized embodiment, the monitoring sensor comprises one or more of temperature, flow rate, pressure of the heat exchange medium, one or more of temperature, flow rate, water quality of the removed contaminant-containing liquid, temperature, humidity, flow rate, pressure of the flue gas, soot particulate matter, nitrogen oxides, sulfur dioxide concentration.
The control method of the integrated boiler system provided by the embodiment is a multi-parameter control and adjustment method, and the thermal parameters of water and smoke and the emission parameters of smoke pollutants are controlled through a plurality of monitoring points at key points of each component and collecting monitoring values, so that the boiler system is guided to operate all year round and under various working conditions.
The above embodiments are only for illustrating the present invention, wherein the structure, connection mode, manufacturing process, etc. of each component may be changed, and all equivalent changes and modifications performed on the basis of the present technical solution should not be excluded from the protection scope of the present invention.
Claims (7)
1. An integrated boiler system, which is connected with a heat user through a pipeline and forms a thermal circulation loop, characterized in that: the integrated boiler system comprises:
a boiler subsystem;
a heat and humidity exchange subsystem; the heat-humidity exchange subsystem comprises a heat-humidity exchange chamber, namely a water treatment chamber, and a sprayer is arranged in the heat-humidity exchange chamber;
a waste heat recovery heat pump subsystem; the waste heat recovery heat pump subsystem comprises an evaporator, a condenser, a throttle and a compressor;
flue gas generated by the boiler subsystem enters a heat-humidity exchange chamber of the heat-humidity exchange subsystem through a first flue gas channel to be subjected to spray heat exchange, waste heat of the flue gas is recovered, the flue gas is purified, and then the flue gas is discharged out of the heat-humidity exchange subsystem from a second flue gas channel (S2);
the evaporator side of the waste heat recovery heat pump subsystem is communicated with the heat-moisture exchange subsystem through a pipeline, an evaporator side heat exchange medium performs spray heat exchange with smoke in the heat-moisture exchange subsystem, recovers heat of the smoke, falls into a water treatment chamber at the bottom, returns to the waste heat recovery heat pump subsystem through the pipeline and provides heat to an evaporator side heat exchanger of the waste heat recovery heat pump subsystem;
the condenser side of the waste heat recovery heat pump subsystem is communicated with the heat user through a pipeline, and a condenser side heat exchange medium flows out of the heat user, enters the condenser side heat exchanger side of the waste heat recovery heat pump subsystem and heats up, then continuously enters the boiler subsystem, and flows into the heat user after being further heated;
the heat-humidity exchange subsystem (102) comprises a high-temperature heat-humidity exchange chamber (1) and a low-temperature heat-humidity exchange chamber (2), wherein a sprayer (4) is respectively arranged in the high-temperature heat-humidity exchange chamber (1) and the low-temperature heat-humidity exchange chamber (2), flue gas enters the high-temperature heat-humidity exchange chamber (1) through a first flue gas channel (S1), enters the low-temperature heat-humidity exchange chamber (2) through a third flue gas channel (S3) after being subjected to spray heat exchange, and is discharged out of the heat-humidity exchange subsystem (102) through a second flue gas channel (S2) after being subjected to further spray heat exchange;
the waste heat recovery heat pump subsystem (103) further comprises:
a regenerative heat exchanger (6);
the evaporator comprises a high-temperature evaporator (7) and a low-temperature evaporator (8);
the low-temperature evaporator (8), the high-temperature evaporator (7), the throttle (11), the condenser (9) and the compressor (10) are connected in sequence to form a refrigerant loop;
the evaporator side heat exchange medium flows out of the heat-moisture exchange subsystem (102) and enters the regenerative heat exchanger (6) through a first cooling water end pipeline (L1) to exchange heat with the condenser side heat exchange medium, then flows out through a fourth cooling water end pipeline (L4), and is divided into two paths which are connected in parallel:
the method comprises the following steps: the evaporator side heat exchange medium enters a high-temperature heat and humidity exchange chamber (1) of the heat and humidity exchange subsystem (102) through a second cooling water end pipeline (L2) and falls into the water treatment chamber (3) after being sprayed;
and two,: the evaporator side heat exchange medium enters the high-temperature evaporator (7) through a fifth cooling water end pipeline (L5) and exchanges heat, then enters the low-temperature evaporator (8) through a sixth cooling water end pipeline (L6) and exchanges heat, and then enters the low-temperature heat and humidity exchange chamber (2) of the heat and humidity exchange subsystem (102) through a third cooling water end pipeline (L3) and falls into the water treatment chamber (3) after being sprayed;
the system is provided with a monitoring sensor.
2. The system according to claim 1, wherein:
the condenser side heat exchange medium flows out from the heat user (104) and passes through the first heating end water pipeline (R1) to form two paths in parallel:
the method comprises the following steps: the condenser side heat exchange medium enters the condenser (9) through a seventh heating water-end pipeline (R7) and flows out of a second heating water-end pipeline (R2) after being heated;
and two,: the condenser side heat exchange medium enters the regenerative heat exchanger (6) through an eighth heating water end pipeline (R8) and exchanges heat with the evaporator side heat exchange medium, and then flows out through a third heating water end pipeline (R3);
the second heating end water pipeline (R2) and the heat exchange medium flowing out of the third heating end water pipeline (R3) are mixed and then enter the boiler subsystem (101) through the fifth heating end water pipeline (R5).
3. The system according to claim 1, wherein: the desulfurizing and pin-removing agent is added in the heat exchange medium at the evaporator side, and the heat exchange medium at the evaporator side has the desulfurizing and pin-removing effects on the smoke after being sprayed in the heat-moisture exchange subsystem (102), so that substances such as sulfide and nitrogen oxides in the smoke are reduced, and the effects of reducing smoke emission and eliminating white smoke are achieved.
4. The system according to claim 1, wherein: the water treatment chamber (3) treats the heat exchange medium and discharges the liquid containing the contaminants after treatment.
5. The system according to claim 1, wherein: the boilers in the boiler subsystem (101) are biomass boilers.
6. A control method of an integrated boiler system according to any of claims 1-5, comprising the steps of:
s1: setting a monitoring sensor at a key position in the system and collecting a monitoring value of the sensor;
s2: and controlling the operation of the system according to the collected monitoring value and controlling the parameters of the heat exchange medium and the discharged flue gas pollutants within a set range.
7. The method according to claim 6, wherein:
the monitoring sensor comprises one or more of temperature, flow rate, pressure of the heat exchange medium, one or more of temperature, flow rate, water quality of the discharged pollutant-containing liquid, one or more of temperature, humidity, flow rate, pressure of the flue gas, soot particulate matter, nitrogen oxides, and sulfur dioxide concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753608.4A CN110425560B (en) | 2019-08-15 | 2019-08-15 | Integrated boiler system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753608.4A CN110425560B (en) | 2019-08-15 | 2019-08-15 | Integrated boiler system and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110425560A CN110425560A (en) | 2019-11-08 |
| CN110425560B true CN110425560B (en) | 2024-02-20 |
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| CN107448965A (en) * | 2017-07-14 | 2017-12-08 | 兰州理工大学 | A kind of Novel incineration furnace fume afterheat depth recovery and energy level lifting process system |
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