CN212378240U - Comprehensive utilization system for biomass energy and solar energy - Google Patents

Comprehensive utilization system for biomass energy and solar energy Download PDF

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Publication number
CN212378240U
CN212378240U CN202021298301.4U CN202021298301U CN212378240U CN 212378240 U CN212378240 U CN 212378240U CN 202021298301 U CN202021298301 U CN 202021298301U CN 212378240 U CN212378240 U CN 212378240U
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pipeline
heat
thermometer
heat exchange
conduction oil
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周谷平
陈玉伟
张有余
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Jiangsu Jialin New Energy Technology Co ltd
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Jiangsu Jialin New Energy Technology Co ltd
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    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/133—Renewable energy sources, e.g. sunlight

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Abstract

The invention discloses a comprehensive utilization system of biomass energy and solar energy, which belongs to the technical field of biomass energy utilization equipment and comprises a biomass gasification device, a heat-conducting oil boiler, a heat consumer and a heat-conducting oil groove, wherein a first coil pipe is arranged in the biomass gasification device, a second coil pipe is arranged in the heat-conducting oil boiler, the heat-conducting oil groove is connected with the first coil pipe through a first pipeline, the first pipeline is provided with a branch, the branch is connected with the second coil pipe, a second coil pipe oil outlet pipe is arranged at the outlet of the second coil pipe, the second coil pipe oil outlet is connected with the heat consumer through a triangular temperature adjusting valve and a third pipeline, the heat consumer is connected with the heat-conducting oil groove through a fourth pipeline, a heat exchange pipe is arranged in the heat-conducting oil groove, and the heat exchange pipe. The invention organically combines the biomass energy and the solar energy, adjusts the heat conduction oil circulation route according to the temperature change, and is energy-saving and environment-friendly.

Description

Comprehensive utilization system for biomass energy and solar energy
Technical Field
The invention belongs to the technical field of biomass energy utilization equipment, and particularly relates to a comprehensive utilization system of biomass energy and solar energy.
Background
The biomass energy comprises all solar energy converted and fixed by plant photosynthesis, is organic substances of plants and animals, is rich in total amount, and can be regenerated by the plant photosynthesis. The biomass has low sulfur and carbon content, and when the biomass fuel is combusted, the carbon dioxide required by the biomass fuel during growth is equivalent to the carbon dioxide discharged by the biomass fuel, so the net discharge amount of the carbon dioxide to the atmosphere is approximate to zero, the greenhouse effect can be effectively reduced, and the pollution to the environment is less. The biomass is seen everywhere, is distributed in all regions of the world, and is widely applied to all fields of national economy.
Based on the above characteristics, research and development of biomass energy have been widely researched, and have become one of the major hot topics in the world, and have been paid attention by governments and scientists in various countries in the world. The biomass energy is effectively utilized, and the method has important significance for energy conservation and emission reduction.
Disclosure of Invention
The invention aims to solve the technical problem of low biomass utilization rate in the prior art.
The technical scheme provided by the invention is as follows:
a biomass energy and solar energy comprehensive utilization system is characterized by comprising a biomass gasification device, a heat-conducting oil boiler, a heat consumer and a heat-conducting oil groove, wherein a first coil pipe is arranged in the biomass gasification device, a second coil pipe is arranged in the heat-conducting oil boiler, an outlet of the heat-conducting oil groove is connected with an inlet of the first coil pipe through a first pipeline, an outlet of the first coil pipe is connected with an inlet of the second coil pipe through a second pipeline, the first pipeline is provided with a branch which is connected with the inlet of the second coil pipe, an outlet of the second coil pipe is provided with a second coil pipe oil outlet pipe, the second coil pipe oil outlet pipe is connected with one end of a third pipeline through a triangular temperature regulating valve, the other end of the third pipeline is connected with the heat consumer, the heat consumer is connected with the inlet of the heat-conducting oil groove through a fourth pipeline, the fourth pipeline is also provided with a circulating loop, and the, the fourth pipeline is connected with the first pipeline through a fifth pipeline, a heat exchange tube is arranged in the heat conduction oil groove, and the heat exchange tube is connected with the energy collecting device. After the energy collecting device collects heat, the heat is transferred to the heat conduction oil groove through the heat exchange tube, and heat conduction oil in the heat conduction oil groove is preheated.
Preferably, be equipped with the second three-way valve on the first pipeline, the second three-way valve with branch road one end is connected, the branch road other end pass through the third three-way valve with the second tube coupling, the third three-way valve pass through the sixth pipeline with second coil pipe entry linkage, be equipped with the eleventh thermometer on the sixth pipeline, be equipped with first thermometer and variable frequency pump on the first pipeline between branch road and the heat conduction oil groove, be equipped with the second thermometer on the second pipeline. And judging whether the heat conduction oil enters the first coil pipe from the first pipeline or directly enters the second coil pipe from the branch by comparing the temperature detected by the first thermometer with the temperature detected by the second thermometer.
Preferably, a fifth thermometer is arranged on the upper portion of the heat conduction oil groove, a first three-way valve is arranged at the end, close to the heat conduction oil groove, of the first pipeline, a fourth three-way valve and a sixth thermometer are arranged at the end, close to the heat conduction oil groove, of the fourth pipeline, and the first three-way valve is connected with the fourth three-way valve through the fifth pipeline. And judging whether the heat conduction oil enters the heat conduction oil groove or not by comparing the temperature detected by the fifth thermometer with the temperature detected by the sixth thermometer.
Preferably, the circulation loop is provided with a second working pump, a twelfth thermometer and a check valve, the second coil pipe is provided with a third thermometer in the oil outlet pipe, and the heat consumer is provided with a fourth thermometer. The heat conduction oil is driven by the second working pump to be transmitted to the circulating loop through the fourth pipeline, the check valve prevents the heat conduction oil from flowing backwards, the flow direction of the heat conduction oil is judged through the temperature difference value between the temperature detected by the third thermometer and the temperature detected by the fourth thermometer, the flow of the pipeline which is not communicated is controlled through the triangular temperature regulating valve, and the required temperature is reached.
Preferably, a porous isolation plate is arranged in the heat conduction oil groove, the porous isolation plate is arranged above the heat exchange tube, and an outlet of the heat conduction oil groove is arranged above the porous isolation plate. The heat conduction oil in the heat conduction oil groove is separated through the porous isolation plate, and the influence on the heat conduction oil on the upper layer when the heat conduction oil on the lower layer is stirred is relieved.
Preferably, the heat exchange tube includes the solar heat exchange tube, be equipped with the third working pump on the solar heat exchange tube, the solar heat exchange tube passes through the pipeline and is connected with solar energy collection device, the solar heat exchange tube with be equipped with the third working pump on the pipeline that solar energy collection device connects, be equipped with the eighth thermometer on the solar energy collection device, be equipped with the seventh thermometer on heat conduction oil groove and the solar heat exchange tube horizontal position. And judging the start and stop of the third working pump by comparing the difference value of the temperature detected by the eighth thermometer and the temperature detected by the seventh thermometer.
Preferably, the biomass gasification device is further provided with a biomass feeding hole, the bottom of the biomass gasification device is provided with a discharging hole, the top of the biomass gasification device is connected with a burner through a pipeline, the burner is connected with a heat conduction oil boiler, the heat conduction oil boiler is provided with a smoke outlet, the smoke outlet is connected with a smoke discharge pipeline, the smoke discharge pipeline is connected with a chimney through a draught fan, and the smoke discharge pipeline is sequentially provided with a smoke heat exchange device and an environment-friendly device. The flue gas in the flue gas discharge pipeline is subjected to heat exchange through the flue gas heat exchange device and then is discharged after being treated by the environment-friendly device.
Preferably, the heat exchange tube comprises a flue gas waste heat exchange tube, a fourth working pump is arranged on the flue gas waste heat exchange tube, the flue gas waste heat exchange tube is connected with a flue gas heat exchange device through a pipeline, a tenth thermometer is arranged on the pipeline connected with the flue gas heat exchange device, and a ninth thermometer is arranged on the horizontal position of the heat conduction oil groove and the flue gas waste heat exchange tube. And judging the start and stop of the fourth working pump by comparing the difference value of the temperature detected by the tenth thermometer and the temperature detected by the ninth thermometer.
The control method of the comprehensive utilization system of biomass energy and solar energy is characterized in that the temperature detected by the first thermometer is T1The temperature detected by the second thermometer is T2When T is2＞T1During the process, heat conducting oil enters the first coil 2-1 from the first pipeline and enters the second coil 4-1 from the second pipeline, and when T is reached2≤T1Meanwhile, the heat conducting oil enters the second coil pipe through the first pipeline and the branch; the temperature detected by the third thermometer is T3The fourth thermometer sets the temperature to be T4Setting a fixed value Δ T2When T is3-T4＞ΔT2During the process, the heat conducting oil enters the heat consumer from the second coil pipe through the oil outlet pipe of the second coil pipe and the third pipeline, and then circulates to the third pipeline 103 from the fourth pipeline through the circulating loop, and when T is reached3-T4≤ΔT2When the heat conduction oil enters the heat consumer from the second coil pipe through the second coil pipe oil outlet pipe and the third pipeline, and then enters the fourth pipeline from the heat consumer; the temperature detected by the fifth thermometer is T5The temperature detected by the sixth thermometer is T6When T is6＞T5When the heat conducting oil is circulated from the fourth pipeline to the first pipeline through the fifth pipeline, the heat conducting oil is used as T6≤T5And meanwhile, the heat conduction oil enters the heat conduction oil groove 1 from the fourth pipeline.
Preferably, the eighth thermometer detects a temperature T8The temperature detected by the seventh thermometer is T7，ΔT1Is a set value when T8-T7＞ΔT1When the solar heat collector is used, the heat is transferred to the heat conducting oil tank through the solar heat exchange tube by the solar energy collecting device, and when the T is reached8-T7≤ΔT1When the third working pump is started, the third working pump is stopped; the temperature detected by the tenth thermometer is T10The ninth thermometer detects the temperature T9When T is10-T9＞ΔT3When the temperature of the water is higher than the set temperature,the fourth working pump is started, and heat is transferred to the heat conduction oil groove through the flue gas waste heat exchange tube by the flue gas heat exchange device, T10-T9≤ΔT3When the fourth working pump is stopped.
The working principle of the invention is as follows:
a: preheating by solar energy: the eighth thermometer detects that the temperature of the solar energy collecting device is T8The seventh thermometer detects that the temperature of the heat conduction oil groove corresponding to the position of the solar heat exchange tube is T7，ΔT1Is a set value when T8-T7＞ΔT1When the solar heat collector is used, the third working pump is started, and heat is transferred to the heat conduction oil groove through the solar heat exchange tube by the solar energy collecting device; setting a variable frequency pump to a low frequency state, adjusting a second three-way valve, enabling heat conduction oil to enter a first coil pipe through a first pipeline from a heat conduction oil groove respectively, enabling the heat conduction oil entering the first coil pipe to flow to a sixth pipeline through a second pipeline, enabling the heat conduction oil to enter a second coil pipe, enabling the heat conduction oil to enter a heat consumer through a third pipe from an oil outlet pipe of the second coil pipe, and enabling the heat consumer to circulate back to the heat conduction oil groove through a fourth pipeline, so that the heat conduction oil is preheated by the solar energy collecting device; when T is8-T7≤ΔT1At this time, the preheating of the heat transfer oil by the solar energy collecting device 6 is completed, and the third working pump 303 is stopped;
b: starting the biomass gasification device, the combustor and the heat conducting oil boiler, setting the variable frequency pump to a high-frequency state, and detecting the temperature of the first pipeline to be T by the first thermometer1The second thermometer detects that the temperature of a second pipeline connected with the first coil pipe is T2When T is2＞T1When the system is used, the second three-way valve turns to the first pipeline, heat conduction oil enters the first coil pipe from the heat conduction oil groove through the first pipeline, the third three-way valve is communicated with the second pipeline and the sixth pipeline, the heat conduction oil enters the second coil pipe from the first coil pipe through the second pipeline, and then an oil outlet pipe of the second coil pipe enters a heat consumer through the third pipeline; when T is2≤T1When the heat conduction oil enters the branch through the first pipeline, the heat conduction oil enters the second coil pipe through the branch, and enters a heat consumer through the third pipeline through the second coil pipe oil outlet pipe 107;
c: the third thermometer detects that the temperature of the oil outlet pipe of the second coil pipe is T3Setting the temperature of the hot user to T by adjusting the fourth thermometer4，ΔT2Is a set value when T4＝TF(TFMaximum temperature required by hot users, maximum system load), satisfies the condition T3-TF≤ΔT2When the biomass gasification device, the combustor and the variable frequency pump are set to be in a maximum power state, the triangular temperature regulating valve automatically regulates the output quantity of heat conduction oil from the oil outlet pipe of the second coil pipe to the third pipeline to be maximum, and the heat conduction oil enters the fourth pipeline from a heat user and does not enter a circulation loop; when T is4＝TM(TMMinimum temperature for hot user demand, minimum system load), satisfies condition T3-TM＞ΔT2During the process, adjust biomass gasification device and combustor and inverter pump power state, the second working pump starts, according to the temperature that the fourth thermometer set for, the temperature that third thermometer and twelfth thermometer detected, the flow that conduction oil got into the third pipeline in triangle temperature regulating valve automatically regulated second coil pipe goes out oil pipe and the circulation circuit, and then the temperature of adjustment third pipeline, in order to satisfy the temperature that the heat consumer set for, the output quantity of second coil pipe play oil pipe to the third pipeline is less this moment, be in low load state, be minimum when adjusting biomass gasification device and combustor power, when second working pump power is the biggest, if T is for the temperature that the temperature of setting for, the temperature that third thermometer and twelfth thermometer detected, the temperature of triangle temperature regulating valve3-TM＞ΔT2Then the biomass gasification device 2 is closed; when T is4When the temperature is Ts (when the hot user stops, the temperature of the system needs to be maintained), the hot user stops using the biomass gasification device 2, and the combustor 3 automatically stops working; fig. 2 is a schematic structural diagram of a triangular temperature control valve, wherein a pipe a is connected to the circulation loop, a pipe B is connected to the oil outlet pipe of the second coil, a pipe C is connected to the third pipeline, the pipe a and the pipe B are merged to the pipe C, a first flow control valve is arranged on the pipe a, a second flow control valve is arranged on the pipe B, and the first flow control valve and the second flow control valve are respectively connected to the pipe C through an interlock system. The first flow regulating valve regulates the flow into D1The second flow regulating valve regulates the flow toD2And the interlocking system automatically adjusts the flow of the first flow regulating valve and the flow of the second flow regulating valve according to the temperature set by a heat user, the temperature of the oil outlet pipe of the second coil detected by the third thermometer and the temperature of the circulating loop detected by the twelfth thermometer, so that the heat conduction oil provided in the third pipeline meets the requirements of the heat user.
D: the fifth thermometer detects that the temperature of the heat conduction oil groove is T5And the temperature of a fourth pipeline detected by a sixth thermometer and the inlet connecting end of the heat-conducting oil groove is T6When T is6＞T5When the heat conduction oil enters the heat conduction oil groove, the first pipeline is communicated with the fourth pipeline through the fifth pipeline, and the heat conduction oil is circulated to the first pipeline from the fourth pipeline through the fifth pipeline and does not enter the heat conduction oil groove; when T is6≤T5When the heat conduction oil enters the heat conduction oil groove from the fourth pipeline, the first three-way valve and the fourth three-way valve are adjusted; when the temperature of the heat conduction oil in the pipeline is lower than that of the heat conduction oil groove, the heat conduction oil enters the heat conduction oil groove and is mixed with the heat conduction oil in the heat conduction oil groove to form the heat conduction oil with the temperature higher than that of the heat conduction oil in the pipeline;
e: the ninth thermometer detects that the temperature of the heat conducting oil groove corresponding to the position of the flue gas waste heat exchange tube is T9The tenth thermometer detects that the temperature of the flue gas heat exchange device is T10，ΔT3At a set value, under a high load condition, when T10-T9＞ΔT3When the fourth working pump is started, heat is transmitted to heat conduction oil in the heat conduction oil groove through the flue gas waste heat exchange tube by the flue gas heat exchange device (a medium is arranged in the flue gas heat exchange device, absorbs the flue gas heat and transmits the heat to the heat conduction oil in the heat conduction oil groove through the flue gas waste heat exchange tube), and the recycling of the flue gas waste heat is realized; when the flue gas is at a certain temperature, the environment-friendly device can realize effective treatment on the flue gas, and under the condition of low load, when T is used10Less than T9During the process, heat conduction oil in the heat conduction oil groove transmits heat to the smoke heat exchange device through the smoke waste heat exchange tube (the heat conduction oil in the heat conduction oil groove carries out medium in the smoke waste heat exchange tubeHeating, wherein the heated medium heats the flue gas through a flue gas heat exchange device), so that the cooled flue gas realizes flue gas reheating to meet the treatment temperature requirement of the flue gas of the environment-friendly device; if no environment-friendly device is provided, namely, the flue gas does not need to be subjected to environment-friendly treatment, if T10＜T9And the fourth working pump stops working, namely, the smoke does not need to be reheated.
F: when the hot user suspends the use, the eleventh thermometer detects the temperature as T11When T is11≤T5And D, setting the variable frequency pump to be in a low-frequency state, and continuously repeating the process of the step A, wherein the temperature of the sixth pipeline is lower than that of the heat conduction oil groove. The hot user suspends the use, the pipeline continuously carries out low-power circulation, and solar energy is preheated, so that the heat energy use efficiency is improved.
By adopting the technical means, the technical effects are as follows:
(1) according to the invention, the heat conduction oil in the heat conduction oil groove is preheated by solar energy, and the heat conduction oil circulates to each pipeline, so that the heat conduction oil in the solar pipeline is preheated, and the solar energy is effectively utilized; the flue gas is exchanged in two directions, the flue gas waste heat is utilized during high load, the flue gas is heated during low load, the environment-friendly device convenient to treat prevents heat waste on the one hand, and solar energy is effectively utilized on the other hand.
(2) The first coil pipe is arranged in the biomass gasification device, heat generated in the biomass gasification process is directly used for heating the first coil pipe, and generated fuel gas heats the second coil pipe, so that loss of biomass energy is avoided, biomass energy and solar energy are organically combined, a circulation route is adjusted according to temperature change, heat energy is utilized to the maximum extent, and the biomass gasification device is energy-saving and environment-friendly.
(3) The invention is provided with a plurality of thermometers, adjusts the circulation route by comparing the temperatures, is flexible and convenient, and maximizes the heat energy utilization efficiency.
Drawings
FIG. 1 is a schematic diagram of the structure and flow of the present invention;
FIG. 2 is a schematic structural view of a triangular temperature regulating valve;
in the figure: 1. a heat conduction oil groove; 1-1, a porous separator plate; 1-2, solar heat exchange tubes; 1-3, a flue gas waste heat exchange tube; 1-4, a pressure relief oil gas recoverer; 1-5, oil supplementing port; 2. a biomass gasification unit; 2-1, a first coil pipe; 2-2, a biomass feed inlet; 2-3, a discharge hole; 3. a burner; 4. a heat conducting oil boiler; 4-1, a second coil pipe; 4-2, a flue gas discharge pipeline; 5. a hot user; 6. a solar energy collection device; 7. a flue gas heat exchange device; 8. an environmental protection device; 9. an induced draft fan; 10. a chimney; 101. a first pipeline; 101-1, branch circuit; 102. a second pipeline; 103. a third pipeline; 104. a fourth pipeline; 104-1, a circulation loop; 105. a fifth pipeline; 106. a sixth pipeline; 107. the oil outlet pipe of the second coil pipe; 201. a first three-way valve; 202. a second three-way valve; 203. a third three-way valve; 204. a fourth three-way valve; 205. a triangular temperature regulating valve; 205-1, a first flow regulating valve; 205-2, a second flow regulating valve; 205-3, an interlock system; 206. a check valve; 301. a variable frequency pump; 302. a second working pump; 303. a third working pump; 304. a fourth working pump; 401. a first thermometer; 402. a second thermometer; 403. a third thermometer; 404. a fourth thermometer; 405. a fifth thermometer; 406. a sixth thermometer; 407. a seventh thermometer; 408. an eighth thermometer; 409. a ninth thermometer; 410. a tenth thermometer; 411. an eleventh thermometer; 412. a twelfth thermometer; 501. a first buffer tank; 502. a second buffer tank; 503. a third buffer tank; 504. and a fourth buffer tank.
Detailed Description
As shown in fig. 1, a comprehensive utilization system of biomass energy and solar energy comprises a biomass gasification device 2, a heat-conducting oil boiler 4, a heat user 5 and a heat-conducting oil groove 1, wherein a first coil 2-1 is arranged in the biomass gasification device 2, a second coil 4-1 is arranged in the heat-conducting oil boiler 4, an outlet of the heat-conducting oil groove 1 is connected with an inlet of the first coil 2-1 through a first pipeline 101, an outlet of the first coil 2-1 is connected with an inlet of the second coil 4-1 through a second pipeline 102, the first pipeline 101 is provided with a branch 101-1, and the branch 101-1 is connected with an inlet of the second coil 4-1. Specifically, a second three-way valve 202 is arranged on the first pipeline 101, the second three-way valve 202 is connected with one end of the branch 101-1, the other end of the branch 101-1 is connected with the second pipeline 102 through a third three-way valve 203, and the third three-way valve 203 is connected with the inlet of the second coil 4-1 through a sixth pipeline 106, that is, the second pipeline 102 and the branch 101-1 are connected with the inlet of the second coil 4-1 through the sixth pipeline 106. The heat conduction oil can be conveyed to the first coil 2-1 from the heat conduction oil groove 1 through the first pipeline 101, and enters the second coil 4-1 from the first coil 2-1 through the second pipeline 102 and the sixth pipeline 106; or the heat conduction oil can be transmitted to the branch 101-1 from the heat conduction oil groove 1 through the first pipeline 101, and then transmitted to the second coil 4-1 through the sixth pipeline 106. Namely, the heat conducting oil firstly enters the first coil 2-1 from the heat conducting oil groove 1 and then enters the second coil 4-1 from the first coil 2-1, or directly enters the second coil 4-1 from the heat conducting oil groove 1 without passing through the first coil 2-1.
An eleventh thermometer 411 is arranged on the sixth pipeline 106, a first thermometer 401 and a variable frequency pump 301 are arranged on the first pipeline 101 between the branch 101-1 and the heat conducting oil groove 1, and a second thermometer 402 is arranged on the second pipeline 102. The flow direction of the conduction oil is judged by the temperatures detected by the first thermometer 401 and the second thermometer 402.
The export of second coil pipe 4-1 even has second coil pipe oil pipe 107, and second coil pipe oil pipe 107 is connected with hot user 5 through third pipeline 103, hot user 5 through fourth pipeline 104 with heat conduction oil groove 1 entry linkage, fourth pipeline 104 still is equipped with circulation circuit 104-1, circulation circuit 104-1 with third pipeline 103 is connected, and is specific, is equipped with triangle temperature regulating valve 205 on the third pipeline 103, triangle temperature regulating valve 205 with circulation circuit 104-1 is connected, be equipped with second work pump 302, twelfth thermometer 412 and check valve 206 on the circulation circuit 104-1, be equipped with third thermometer 403 on the second coil pipe 107, be equipped with fourth thermometer 404 on the hot user 5.
Fourth pipeline 104 is connected with first pipeline 101 through fifth pipeline 105, first pipeline 101 is close to heat conduction oil groove 1 end and is equipped with first three-way valve 201, fourth pipeline 104 is close to heat conduction oil groove 1 end and is equipped with fourth three-way valve 204 and sixth thermometer 406, first three-way valve 201 through fifth pipeline 105 with fourth three-way valve 204 is connected, heat conduction oil groove 1 upper portion is equipped with fifth thermometer 405.
And a heat exchange tube is arranged in the heat conduction oil groove 1 and is connected with an energy collecting device. The heat exchange tubes comprise solar heat exchange tubes 1-2, the solar heat exchange tubes 1-2 are connected with a solar collecting device 6 through pipelines, a third working pump 303 is arranged on the pipeline connected with the solar collecting device 6 through the solar heat exchange tubes 1-2, an eighth thermometer 408 is arranged on the solar collecting device 6, and a seventh thermometer 407 is arranged on the horizontal positions of the heat conduction oil groove 1 and the solar heat exchange tubes 1-2.
The heat exchange tubes comprise flue gas waste heat exchange tubes 1-3, fourth working pumps 304 are arranged on the flue gas waste heat exchange tubes 1-3, the flue gas waste heat exchange tubes 1-3 are connected with a flue gas heat exchange device 7 through pipelines, tenth thermometers 410 are arranged on the pipelines connected with the flue gas waste heat exchange tubes 1-3 and the flue gas heat exchange device 7, and ninth thermometers 409 are arranged on the horizontal positions of the heat conduction oil grooves 1 and the flue gas waste heat exchange tubes 1-3.
The biomass gasification device is characterized in that a biomass feed port 2-2 is further formed in the biomass gasification device 2, a discharge port 2-3 is formed in the bottom of the biomass gasification device 2, the top of the biomass gasification device 2 is connected with a burner through a pipeline, the burner is connected with a heat conduction oil boiler 4, the heat conduction oil boiler 4 is provided with a smoke outlet, the smoke outlet is connected with a smoke discharge pipeline 4-2, the smoke discharge pipeline 4-2 is connected with a chimney 10 through an induced draft fan 9, and a smoke heat exchange device 7 and an environment-friendly device 8 are sequentially arranged on the smoke discharge pipeline 4-2.
The heat exchange tube is characterized in that a porous isolation plate 1-1 is arranged in the heat conduction oil groove 1, the porous isolation plate 1-1 is arranged above the heat exchange tube, an outlet of the heat conduction oil groove 1 and a fifth thermometer 405 are arranged above the porous isolation plate 1-1, and an inlet of the heat conduction oil groove 1 is arranged below the porous heat insulation plate. The oil-gas recovery device is characterized in that a pressure-relief oil-gas recovery device 1-4 is arranged above the heat-conducting oil groove 1, volatile oil gas in the heating process is recovered through the pressure-relief oil-gas recovery device 1-4, an oil supplementing port 1-5 is arranged at the bottom of the heat-conducting oil groove 1, and heat-conducting oil loss in the heat-conducting oil groove 1 is supplemented through the oil supplementing port 1-5.
A control method of a biomass energy and solar energy comprehensive utilization system is characterized in that the temperature detected by a first thermometer 401 is T1The temperature detected by the second thermometer 402 is T2When T is2＞T1During the process, heat conducting oil enters the first coil 2-1 from the first pipeline 101 and enters the second coil 4-1 from the second pipeline 102, and when T is measured2≤T1During operation, heat conducting oil enters the second coil pipe 4-1 from the first pipeline 101 through the branch 101-1; the temperature detected by the third thermometer 403 is T3The fourth thermometer 404 sets the temperature T4Setting a fixed value Δ T2When T is3-T4＞ΔT2During the process, heat conducting oil enters the heat consumer 5 from the second coil 4-1 through the second coil oil outlet pipe 107 and the third pipeline 103, and then circulates to the third pipeline 103 from the fourth pipeline 104 through the circulating loop 104-1, and when T is reached3-T4≤ΔT2During the operation, the heat conducting oil enters the heat consumer 5 from the second coil 4-1 through the second coil oil outlet pipe 107 and the third pipeline 103, and then enters the fourth pipeline 104 from the heat consumer 5; the temperature detected by the fifth thermometer 405 is T5The temperature detected by the sixth thermometer 406 is T6When T is6＞T5Meanwhile, the heat transfer oil circulates from the fourth pipeline 104 to the first pipeline 101 through the fifth pipeline 105, and when T is reached6≤T5Meanwhile, the heat conducting oil enters the heat conducting oil groove 1 through the fourth pipeline 104.
Preferably, the eighth thermometer 408 detects a temperature T8The temperature detected by the seventh thermometer 407 is T7，ΔT1Is a set value when T8-T7＞ΔT1When the third working pump 303 is started, heat is transmitted to the heat conduction oil tank 1 from the solar energy collecting device 6 through the solar energy heat exchange tube 1-2, and when T is reached8-T7≤ΔT1When so, the third working pump 303 is stopped; the temperature detected by the tenth thermometer 410 is T10The temperature detected by the ninth thermometer 409 is T9When T is10-T9＞ΔT3When the fourth working pump 304 is started, heat is transferred to the heat conducting oil groove 1, T from the flue gas heat exchange device 7 through the flue gas waste heat exchange tube 1-310-T9≤ΔT3While, the fourth working pump 304And (5) stopping.
The invention is controlled by a PLC controller.
The working method of the invention is as follows:
a: preheating by solar energy: the eighth thermometer 408 detects the temperature T of the solar energy collecting device 68The seventh thermometer 407 detects that the temperature of the heat conducting oil groove 1 corresponding to the position of the solar heat exchange tube 1-2 is T7，ΔT1Is a set value when T8-T7＞ΔT1When the solar heat collector is used, the third working pump 303 is started, and heat is transmitted to the heat conduction oil tank 1 through the solar heat exchange tube 1-2 by the solar energy collecting device 6; setting a variable frequency pump 301 to a low frequency state, adjusting a second three-way valve 202, enabling heat conduction oil to enter a first coil 2-1 from a heat conduction oil groove 1 through a first pipeline 101 respectively, enabling the heat conduction oil entering the first coil 2-1 to flow to a sixth pipeline 106 through a second pipeline 102, enabling the heat conduction oil to enter a second coil 4-1, enabling the heat conduction oil to enter a heat user 5 through a second coil oil outlet pipe 107 through a third pipeline 103, enabling the heat user 5 to circularly return to the heat conduction oil groove 1 through a fourth pipeline 104, and preheating the heat conduction oil by a solar energy collecting device 6; when T is8-T7≤ΔT1At this time, the preheating of the heat transfer oil by the solar energy collecting device 6 is completed, and the third working pump 303 is stopped;
b: starting the biomass gasification device 2, the combustor 3 and the heat conducting oil boiler 4, setting the variable frequency pump 301 to be in a high-frequency state, and detecting the temperature of the first pipeline 101 to be T by the first thermometer 4011The second thermometer 402 detects the temperature T of the second pipeline 102 connected to the first coil 2-12When T is2＞T1When the system is used, the second three-way valve 202 turns to the first pipeline 101, heat conduction oil enters the first coil 2-1 from the heat conduction oil groove 1 through the first pipeline 101, the third three-way valve 203 is communicated with the second pipeline 102 and the sixth pipeline 106, the heat conduction oil enters the second coil 4-1 from the first coil 2-1 through the second pipeline 102, and then the second coil oil outlet pipe 107 enters the heat consumer 5 through the third pipeline 103; when T is2≤T1During the process, the second three-way valve 202 turns to the branch 101-1, the third three-way valve 203 is communicated with the branch 101-1 and the sixth pipeline 106, the heat conduction oil enters the branch 101-1 from the heat conduction oil groove 1 through the first pipeline 101, then enters the second coil 4-1 from the branch 101-1, and passes through the second coil oil outlet pipe 107 through the first pipeline 101The third pipe 103 enters the hot user 5;
c: the third thermometer 403 detects the temperature T of the oil outlet pipe 107 of the second coil pipe3Setting the temperature of the hot user 5 to T by adjusting the fourth thermometer 4044，ΔT2Is a set value when T4＝TF(TFMaximum temperature required by hot users, maximum system load), satisfies the condition T3-TF≤ΔT2When the biomass gasification device 2, the combustor 3 and the variable frequency pump 301 are set to be in the maximum power state, the triangular temperature regulating valve 205 automatically regulates the output quantity of heat conduction oil from the second coil oil outlet pipe 107 to the third pipeline 103 to be the maximum, and the heat conduction oil enters the fourth pipeline 104 from the heat consumer 5 and does not enter the circulation loop 104-1; when T is4＝TM(TMMinimum temperature for hot user demand, minimum system load), satisfies condition T3-TM＞ΔT2When the power states of the biomass gasification device 2, the combustor 3 and the variable frequency pump 301 are adjusted, the second working pump 302 is started, the flow of the heat conducting oil in the second coil oil outlet pipe 107 and the heat conducting oil in the circulation loop 104-1 entering the third pipeline 103 is automatically adjusted by the triangular temperature adjusting valve 205 according to the temperature set by the fourth thermometer 404 and the temperatures detected by the third thermometer 403 and the twelfth thermometer 412, and then the temperature of the third pipeline 103 is adjusted to meet the temperature set by the heat consumer 5, at the moment, the output quantity of the second coil oil outlet pipe 107 to the third pipeline 103 is less, and the second working pump 302 is in a low-load state, when the power of the biomass gasification device 2 and the power of the combustor 3 are adjusted to be minimum, and the power of the second working pump 302 is maximum, if3-TM＞ΔT2Then the biomass gasification device 2 is closed; when T is4When the temperature is Ts (when the hot user stops, the temperature of the system needs to be maintained), the hot user stops using the biomass gasification device 2, and the combustor 3 automatically stops working; FIG. 2 is a schematic structural diagram of a triangular temperature control valve 205, wherein a pipe A is connected to the circulation loop 104-1, a pipe B is connected to the outlet pipe 107 of the second coil, a pipe C is connected to the third pipeline 103, the pipe A and the pipe B are merged to the pipe C, a first flow control valve 205-1 is arranged on the pipe A, a second flow control valve 205-2 is arranged on the pipe B, and the first flow control valveThe throttle valve 205-1 and the second flow control valve 205-2 are connected to the C line via an interlock system 205-3, respectively. The first flow regulating valve 205-1 regulates the flow to D1The second flow regulating valve 205-2 regulates the flow to D2And the interlocking system 205-3 automatically adjusts the flow of the first flow regulating valve 205-1 and the flow of the second flow regulating valve according to the temperature set by the heat consumer, the temperature of the second coil outlet pipe 107 detected by the third thermometer 403 and the temperature of the circulation loop 104-1 detected by the twelfth thermometer 412, so that the heat conducting oil provided in the third pipeline 103 meets the requirement of the heat consumer 5.
D: the fifth thermometer 405 detects the temperature of the heat conducting oil groove 1 as T5The temperature of the connection end of the fourth pipeline 104 and the inlet of the heat conducting oil groove 1, which is detected by the sixth thermometer 406, is T6When T is6＞T5When the heat conduction oil is used, the first three-way valve 201 and the fourth three-way valve 204 are adjusted to enable the first pipeline 101 and the fourth pipeline 104 to be communicated through the fifth pipeline 105, and the heat conduction oil is circulated to the first pipeline 101 from the fourth pipeline 104 through the fifth pipeline 105 and does not enter the heat conduction oil groove 1; when T is6≤T5Meanwhile, the first three-way valve 201 and the fourth three-way valve 204 are adjusted, and the heat conduction oil enters the heat conduction oil groove 1 through the fourth pipeline 104; when the temperature of the heat conduction oil in the pipeline is lower than that of the heat conduction oil groove 1, the heat conduction oil enters the heat conduction oil groove 1 and is mixed with the heat conduction oil in the heat conduction oil groove 1 to form the heat conduction oil with the temperature higher than that of the heat conduction oil in the pipeline;
e: the ninth thermometer 409 detects that the temperature of the heat conducting oil groove 1 corresponding to the position of the flue gas waste heat exchange tube 1-3 is T9The tenth thermometer 410 detects that the temperature of the flue gas heat exchange device 7 is T10，ΔT3At a set value, under a high load condition, when T10-T9＞ΔT3When the fourth working pump 304 is started, heat is transferred to the heat conduction oil in the heat conduction oil groove 1 through the flue gas waste heat exchange tube 1-3 by the flue gas heat exchange device 7 (a medium is arranged in the flue gas heat exchange device 7, absorbs the flue gas heat and transfers the heat to the heat conduction oil in the heat conduction oil groove 1 through the flue gas waste heat exchange tube 1-3), so that the recycling of the flue gas waste heat is realized; in the flue gas at oneAt a fixed temperature, the environmental protection device 8 can realize effective treatment on the flue gas, and under the condition of low load, when T is measured10Less than T9During the process, heat conducting oil in the heat conducting oil groove 1 transmits heat to the flue gas heat exchange device 7 through the flue gas waste heat exchange tubes 1-3 (the heat conducting oil in the heat conducting oil groove 1 heats a medium in the flue gas waste heat exchange tubes 1-3, and the heated medium heats the flue gas through the flue gas heat exchange device 7), so that the cooled flue gas is reheated to meet the treatment temperature requirement of the flue gas of the environment-friendly device; if no environmental protection device 8 is provided, namely when the flue gas does not need to be subjected to environmental protection treatment, if T10＜T9The fourth working pump 304 is deactivated, i.e. no reheating of the flue gas is required.
F: when the hot user 5 suspends the use, the eleventh thermometer 411 detects the temperature as T11When T is11≤T5And (3) setting the variable frequency pump 301 to be in a low-frequency state, namely setting the temperature of the sixth pipeline 106 to be lower than the temperature of the heat-conducting oil groove 1, and continuously repeating the process of the step (A). The hot user 5 suspends the use, the pipeline continuously carries out low-power circulation, and solar energy is preheated, so that the heat energy use efficiency is improved.
A heat pipe is arranged in the heat consumer 5, a fourth thermometer 404 is arranged on the heat pipe, and heat conducting oil is communicated in the heat pipe.
In this embodiment, the first pipeline 101, the fourth pipeline 104, the pipeline connecting the solar heat exchange tube 1-2 and the solar energy, and the pipeline connecting the flue gas waste heat exchange tube 1-3 and the flue gas heat exchange device 7 are all provided with buffer tanks for adjusting the pressure of the pipelines.

Claims (8)

1. A comprehensive utilization system of biomass energy and solar energy is characterized by comprising a biomass gasification device (2), a heat-conducting oil boiler (4), a heat user (5) and a heat-conducting oil groove (1), wherein a first coil (2-1) is arranged in the biomass gasification device (2), a second coil (4-1) is arranged in the heat-conducting oil boiler (4), an outlet of the heat-conducting oil groove (1) is connected with an inlet of the first coil (2-1) through a first pipeline (101), an outlet of the first coil (2-1) is connected with an inlet of the second coil (4-1) through a second pipeline (102), the first pipeline (101) is provided with a branch (101-1), the branch (101-1) is connected with an inlet of the second coil (4-1), an outlet of the second coil (4-1) is provided with a second coil oil outlet pipe (107), second coil pipe goes out oil pipe (107) and is connected with third pipeline (103) one end through triangle temperature regulating valve (205), third pipeline (103) other end is connected with hot user (5), hot user (5) through fourth pipeline (104) with heat conduction oil groove (1) entry linkage, fourth pipeline (104) still are equipped with circulation circuit (104-1), circulation circuit (104-1) with triangle temperature regulating valve (205) are connected, fourth pipeline (104) are connected with first pipeline (101) through fifth pipeline (105), be equipped with the heat exchange tube in heat conduction oil groove (1), the heat exchange tube is connected with energy collection device.
2. The system for comprehensive utilization of biomass energy and solar energy according to claim 1, wherein a second three-way valve (202) is arranged on the first pipeline (101), the second three-way valve (202) is connected with one end of the branch (101-1), the other end of the branch (101-1) is connected with the second pipeline (102) through a third three-way valve (203), the third three-way valve (203) is connected with an inlet of the second coil (4-1) through a sixth pipeline (106), an eleventh thermometer (411) is arranged on the sixth pipeline (106), a first thermometer (401) and a variable frequency pump (301) are arranged on the first pipeline (101) between the branch (101-1) and the heat conducting oil tank (1), and a second thermometer (402) is arranged on the second pipeline (102).
3. The comprehensive utilization system of biomass energy and solar energy according to claim 1, characterized in that a fifth thermometer (405) is disposed at the upper part of the heat conduction oil tank (1), the first pipeline (101) is provided with a first three-way valve (201) near the end of the heat conduction oil tank (1), the fourth pipeline (104) is provided with a fourth three-way valve (204) and a sixth thermometer (406) near the end of the heat conduction oil tank (1), and the first three-way valve (201) is connected with the fourth three-way valve (204) through a fifth pipeline (105).
4. The system for comprehensive utilization of biomass energy and solar energy according to claim 1, wherein a second working pump (302), a twelfth thermometer (412) and a check valve (206) are arranged on the circulation loop (104-1), a third thermometer (403) is arranged on the second coil outlet pipe (107), and a fourth thermometer (404) is arranged on the heat consumer (5).
5. The comprehensive utilization system of biomass energy and solar energy according to claim 1, characterized in that a porous separator (1-1) is arranged in the heat conduction oil tank (1), the porous separator (1-1) is arranged above a heat exchange pipe, and an outlet of the heat conduction oil tank (1) is arranged above the porous separator (1-1).
6. A comprehensive utilization system of biomass energy and solar energy according to claim 5, characterized in that the heat exchange pipes comprise solar heat exchange pipes (1-2), the solar heat exchange pipes (1-2) are connected with a solar energy collecting device (6) through pipelines, a third working pump (303) is arranged on the pipeline connecting the solar heat exchange pipes (1-2) and the solar energy collecting device (6), an eighth thermometer (408) is arranged on the solar energy collecting device (6), and a seventh thermometer (407) is arranged at the horizontal position of the heat conduction oil tank (1) and the solar heat exchange pipes (1-2).
7. The system for comprehensive utilization of biomass energy and solar energy according to claim 5, wherein a biomass feeding port (2-2) is further formed in the biomass gasification device (2), a discharging port (2-3) is formed in the bottom of the biomass gasification device (2), the top of the biomass gasification device (2) is connected with a burner through a pipeline, the burner is connected with the heat conduction oil boiler (4), the heat conduction oil boiler (4) is provided with a flue gas outlet, the flue gas outlet is connected with a flue gas discharge pipeline (4-2), the flue gas discharge pipeline (4-2) is connected with a chimney (10) through an induced draft fan (9), and a flue gas heat exchange device (7) and an environment-friendly device (8) are sequentially arranged on the flue gas discharge pipeline (4-2).
8. The comprehensive utilization system of biomass energy and solar energy according to claim 7, characterized in that the heat exchange tubes comprise flue gas waste heat exchange tubes (1-3), a fourth working pump (304) is arranged on the flue gas waste heat exchange tubes (1-3), the flue gas waste heat exchange tubes (1-3) are connected with a flue gas heat exchange device (7) through pipelines, a tenth thermometer (410) is arranged on the pipeline connecting the flue gas waste heat exchange tubes (1-3) with the flue gas heat exchange device (7), and a ninth thermometer (409) is arranged at the horizontal position of the heat conduction oil tank (1) and the flue gas waste heat exchange tubes (1-3).
CN202021298301.4U 2020-07-06 2020-07-06 Comprehensive utilization system for biomass energy and solar energy Active CN212378240U (en)

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Application Number Priority Date Filing Date Title
CN202021298301.4U CN212378240U (en) 2020-07-06 2020-07-06 Comprehensive utilization system for biomass energy and solar energy

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Application Number Priority Date Filing Date Title
CN202021298301.4U CN212378240U (en) 2020-07-06 2020-07-06 Comprehensive utilization system for biomass energy and solar energy

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CN212378240U true CN212378240U (en) 2021-01-19

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Country Link
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