CN105971681B - A kind of system and method for nature Btu utilization - Google Patents
A kind of system and method for nature Btu utilization Download PDFInfo
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- CN105971681B CN105971681B CN201610385466.7A CN201610385466A CN105971681B CN 105971681 B CN105971681 B CN 105971681B CN 201610385466 A CN201610385466 A CN 201610385466A CN 105971681 B CN105971681 B CN 105971681B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
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Abstract
The invention belongs to field of energy utilization, it is related to the method for the Btu utilization of nature, more particularly to a kind of system and method for nature Btu utilization.Including compressor, the first expanding machine, the second expanding machine, heat exchanger, wet tank.The compressor, the first expanding machine, the second expanding machine collectively constitute drive train, to the mechanical output mechanical energy of driving.The present invention is applicable not only to the Btu utilization to media such as nature air, seawater or underground heat, while being also applied for the recycling of factory's low-temperature waste heat.
Description
Technical field
The invention belongs to field of energy utilization, it is related to the method for the Btu utilization of nature, more particularly to a kind of nature
The system and method for Btu utilization.
Background technology
Nature is filled with an unbounded quantity of normal temperature energy such as the unlimited normal temperature energy, air, seawater, underground heat, with exploitation
Potentiality.The mankind in the available resource of field of energy utilization, including：Solar energy, wind energy, seawer tide energy, river water energy, stone
The fossil fuels such as oil, natural gas, coal, nuclear fission, the nuclear energy of nuclear fusion.Solar energy, wind energy, seawer tide energy, river
Although power energy is cleaned, limited after all, and can cause Human disturbance nature；The fossil class energy such as oil, natural gas, coal
Source, will all cause the rising of global warming, the pollution of air and the rising of atmospheric greenhouse gas carbon dioxide content；Core splits
Change, the energy of nuclear fusion, will cause the rising of global temperatures.
The content of the invention
Based on this, the present invention provides a kind of system and method for nature Btu utilization, using the resource conversion of nature
It is mechanical energy.
Technical solution of the present invention is as follows：
A kind of system of nature Btu utilization, including compressor, the compressor are connected with first pressure control valve, institute
State first pressure control valve to be connected with First Heat Exchanger, the First Heat Exchanger is connected by the first pipeline with the second heat exchanger,
Second heat exchanger is connected with the second expanding machine, and second expanding machine is connected with second pressure control valve, second pressure
Force control valve is connected with the 3rd heat exchanger, the 4th heat exchanger respectively；
3rd heat exchanger is connected with first-class control valve；
Circuit and the 4th heat exchanger parallel communication that 3rd heat exchanger is connected with first-class control valve, the parallel connection
The total line of connection is connected with compressor,
The 3rd pipeline is additionally provided with the total line of the parallel communication, the 3rd pipeline is provided with the 4th Stress control
Valve；
3rd heat exchanger is connected with wet tank, and the wet tank is connected with liquid delivery pump, and the liquid is defeated
Pump is sent to be connected with second control valve, the second control valve is connected with the second heat exchanger, second heat exchanger leads to
Cross the second pipeline to be connected with First Heat Exchanger, the First Heat Exchanger is connected with the 3rd pressure-control valve, the 3rd pressure control
Valve processed is connected with the first expanding machine, and first expanding machine is connected with the 3rd heat exchanger；
The compressor, the first expanding machine, the second expanding machine collectively constitute drive train, and to driving, machinery output is mechanical
Energy.
The method that nature Btu utilization is carried out using described system, the described method comprises the following steps：
Step 1：The gas of the first working medium is obtained the gas of the first working medium of compressor outlet by compressor compresses, is passed through
First pressure control valve controls the pressure of the gas of the first working medium after the compression of the compressor outlet, so as to control the pressure
The temperature of the gas of the first working medium meets gasification and the heat of superheating process of the liquid of third party's working medium after the compression of contracting machine outlet
The need for amount；
Step 2：The gas of the first working medium controls valve to obtain by first pressure after the compression of step 1 compressor outlet
By the gas of the first working medium after first pressure control valve, the gas of first working medium by after first pressure control valve
Lower the temperature by First Heat Exchanger, the second heat exchanger, form the gas of the first working medium lowered the temperature by heat exchanger；Third party's working medium
Liquid is the saturated gas of third party's working medium by the second heat exchanger heating and gasifying, and the saturated gas of third party's working medium is by first
Heat exchanger is heated to be the overheated gas of third party's working medium, by the pressure of the overheated gas of the 3rd pressure-control valve control third party's working medium
Power, by second control valve control third party's working medium liquid flow so as to control the overheated gas temperature of third party's working medium
Degree；
Step 3：The gas of the first working medium that the step 2 is lowered the temperature by heat exchanger does work into the second expander
To the first working medium of the low temperature of the second expander outlet, the low temperature of second expander outlet is controlled by second pressure control valve
The first power pressure, pressure reduction while temperature accordingly reduce；Valve is controlled to control second expansion by second pressure
The pressure of the first working medium of the low temperature of machine outlet, so as to control the temperature of the first working medium of the low temperature of second expander outlet
Less than the temperature of the nature heat source substance chosen；
Step 4：First working medium of the low temperature of the expander outlet of the step 3 second is divided into two-way, the second expander outlet
The 4th heat exchanger that leads up to of the first working medium of low temperature heated by the nature heat source substance chosen, absorb heat, obtain
The gas of the first working medium for heating all the way；
Step 5：The first-class control valve of another route of the first working medium of the low temperature of the expander outlet of the step 3 second
Control flow, the third party's working medium by the 3rd heat exchanger to the first expander outlet are heated, and absorb heat, are obtained another road and are added
The gas of the first working medium of heat；
First working medium of the low temperature of the expander outlet of the step 3 second is heated by the 3rd heat exchanger, the 4th heat exchanger
It is the gas of the first working medium after converging to converge；
Step 6：The gas of the first working medium after the converging of the step 5 is supplemented by the 4th pressure-control valve or is discharged completion
Stress control, the gas for obtaining the first working medium enters the circulation that compressor completes working medium；
Step 7：In the step 2, the overheated gas of third party's working medium are obtained by the 3rd pressure by the 3rd pressure valve
After the overheated gas of third party's working medium of valve, the acting of the first expander is entered back into；Third party's work is controlled by the 3rd pressure valve
The pressure of the overheated gas of matter, by second flow valve control third party's working medium liquid flow so as to control third party's working medium
The temperature of overheated gas, so as to control first expander outlet third party's working medium to connect near-critical subcritical state（Temperature, pressure
Approach and less than critical point）；
Step 8：Third party's working medium of the first expander outlet exchanges heat by the 3rd heat exchanger and condenses in the step 5, obtains
To the liquid of third party's working medium of condensation；Another route first flow control of the first working medium of the low temperature of the second expander outlet
Valve controls flow, so as to control cold, the third party's working medium heat exchange for meeting the first expander outlet is condensed into liquid；
Step 9：The liquid of the third party's working medium condensed in the step 8 enters wet tank, and described wet tank goes out
Mouthful third party's working medium liquid be changed into the liquid of third party's working medium by the pressure-raising of liquid delivery pump, by second flow control
Valve control enters the second heat exchanger, completes the circulation of third party's working medium；
Step 10：Compressor, the first expanding machine, the second expanding machine collectively constitute drive train, output mechanical energy, driving machine
Tool is operated；4th heat exchanger absorbs the heat of nature heat source substance.
In described step 1, the gas of the first working medium compresses temperature-rise period at least once,
In described step 2, exchanged heat at least once drop by the gas of the first working medium after first pressure control valve
Warm process,
In described step 3, the gas of the first working medium lowered the temperature by heat exchanger at least once lower the temperature by expansion work
Process, completes temperature rising, heat output, the process of temperature reduction of the first working medium.
In described step 2, the heating process that the liquid of third party's working medium gasifies and overheats at least once completes the
One working medium heat transfer process.
In described step 7, the overheated gas of third party's working medium expansion work process at least once completes the first work
Matter heat is converted to the process of mechanical energy.
In described step 4, the first working medium of the low temperature of the second expander outlet is at least once from nature thermal source
Material absorbing heat process, completes the absorption of nature heat；In described step 5, the third party of the first expander outlet
The heat of working medium is absorbed by the first working medium of the second expander outlet.
The state of the first working medium of the low temperature of the second expander outlet can be gas or gas-liquid mixed in the step 3
Thing；Third party's working medium state of the first expander outlet in the step 5, step 7, step 8 can be that gas or gas-liquid are mixed
Compound.
The first selected working medium forms presence, boiling point less than the selected nature for absorbing heat under having normal temperature with gas
The characteristic of the temperature of boundary's heat source substance, in order to absorb heat from nature；Selected third party's working medium has low stagnation temperature
Degree, the characteristic of low critical pressure, gasification and overheat, the first expanding machine in order to the liquid of third party's working medium are in relative low
Pressure operating condition.
Beneficial effect of the present invention：
1st, the present invention is applicable not only to the Btu utilization to media such as nature air, seawater or underground heat, while being also suitable
In the recycling of factory's low-temperature waste heat；
2nd, the present invention can be used for machinery driving, it is adaptable to drive electrical power generators, the navigation of ship, the traveling of vehicle,
The flight of aircraft, drives electrical power generators process to adapt to the process of refrigerastion of factory, city central air-conditioning refrigeration system, and benefit will
Extended.
3rd, Btu utilization of the invention is not only without the discharge of atmospheric greenhouse gas, and does not result in the liter of environment temperature
Height, the mankind increase energy resource consumption in process of industrialization, increased carbon-dioxide content in atmosphere, cause the upper of environment temperature
Rise, constrain the mode of mankind's energy resource consumption, will be addressed using the present invention.
Brief description of the drawings
Fig. 1：Present system structural representation；
Wherein：Compressor J1, the first expanding machine J2, the second expanding machine J3, first pressure control valve F1, second pressure control
Valve F2, first-class control valve F3, second control valve F4, the 3rd pressure-control valve F5, the 4th pressure-control valve F6, first
Heat exchanger E1, the second heat exchanger E2, the 3rd heat exchanger E3, the 4th heat exchanger E4, wet tank V, liquid delivery pump P；
The gas 01 of the first working medium, the gas 02 of the first working medium after the compression of compressor outlet, by first pressure control
The gas 03 of the first working medium after valve processed, by heat exchanger lower the temperature the first working medium gas 05, the second expander outlet it is low
First working medium 06 of temperature, another road 07 of the first working medium of the low temperature of the second expander outlet, the low temperature of the second expander outlet
The first working medium all the way 08, the gas 09 of the first working medium of another road heating, the gas 10 of the first working medium for heating all the way converges
The gas 11 of the first working medium after conjunction, the liquid 13 of third party's working medium, the saturated gas 14 of third party's working medium, third party's working medium
Overheated gas 15, by the overheated gas 16 of third party's working medium of the 3rd pressure valve, third party's work of the first expander outlet
The third party's working medium 17 of matter 17, the liquid 18 of third party's working medium of condensation, the liquid 19 of third party's working medium of wet tank V outlets.
Specific embodiment
The present invention is further illustrated with reference to embodiment, but the scope of protection of present invention is not limited to implement
The scope of example statement.
Embodiment 1
A kind of system of nature Btu utilization, including compressor J1, the compressor J1 and first pressure control valve F1
Connection, first pressure control valve F1 is connected with First Heat Exchanger E1, and the First Heat Exchanger E1 passes through the first pipeline and the
Two heat exchanger E2 are connected, and the second heat exchanger E2 connects with the second expanding machine J3, the second expanding machine J3 and second pressure
Control valve F2 connections, the second pressure control valve F2 is connected with the 3rd heat exchanger E3, the 4th heat exchanger E4 respectively；
The 3rd heat exchanger E3 is connected with first-class control valve F3；
Circuit and the 4th heat exchanger E4 parallel communications that the 3rd heat exchanger E3 is connected with first-class control valve F3, institute
The total line for stating parallel communication is connected with compressor J1,
The 3rd pipeline is additionally provided with the total line of the parallel communication, the 3rd pipeline is provided with the 4th pressure-control valve
F6；
The 3rd heat exchanger E3 is connected with wet tank V, and the wet tank V is connected with liquid delivery pump P, the liquid
Body delivery pump P is connected with second control valve F4, and the second control valve F4 is connected with the second heat exchanger E2, and described
Two heat exchanger E2 are connected by the second pipeline with First Heat Exchanger E1, and the First Heat Exchanger E1 and the 3rd pressure-control valve F5 connects
Logical, the 3rd pressure-control valve F5 is connected with the first expanding machine J2, and the first expanding machine J2 is connected with the 3rd heat exchanger E3.
Embodiment 2
The method that nature Btu utilization is carried out using the system described in embodiment 1, the described method comprises the following steps：
Step 1：The gas 01 of the first working medium is obtained the gas of the first working medium of compressor outlet by compressor J1 compressions
02, the pressure of the gas 02 of the first working medium after first pressure controls valve F1 to control the compression of the compressor outlet, from
And control the gas 02 of the first working medium after the compression of the compressor outlet temperature meet third party's working medium liquid 13 gas
The need for changing the heat with superheating process；
Step 2：The gas 02 of the first working medium controls valve F1 by first pressure after the compression of step 1 compressor outlet
Obtain the gas 03 by the first working medium after first pressure control valve, first working medium by after first pressure control valve
Gas 03 by First Heat Exchanger E1, the second heat exchanger E2 lower the temperature, formed by heat exchanger lower the temperature the first working medium gas
05；The liquid 13 of third party's working medium is the saturated gas 14 of third party's working medium, third party by the second heat exchanger E2 heating and gasifyings
The saturated gas 14 of working medium is heated to be the overheated gas 15 of third party's working medium by First Heat Exchanger E1, by the 3rd pressure-control valve
The pressure of the overheated gas 15 of F5 control third party's working medium, the liquid 13 by second control valve F4 control third party's working medium
Flow is so as to control the temperature of overheated gas 15 of third party's working medium；
Step 3：The gas 05 of the first working medium that the step 2 is lowered the temperature by heat exchanger does into the second expanding machine J3 expansions
Work(obtains the first working medium 06 of the low temperature of the second expander outlet, controls second expanding machine to go out by second pressure control valve F2
The pressure of first working medium 06 of the low temperature of mouth, temperature is accordingly reduced while pressure reduction；Valve F2 is controlled to control by second pressure
The pressure of the first working medium 06 of the low temperature of second expander outlet, so as to control the low temperature of second expander outlet
The first working medium 06 temperature less than choose nature heat source substance temperature；
Step 4：First working medium 06 of the low temperature of the expander outlet of the step 3 second is divided into two-way, the second expanding machine
08 being heated by the nature heat source substance chosen by the 4th heat exchanger E4 all the way for first working medium of the low temperature of outlet, absorbs heat
Amount, the gas 10 of the first working medium for being heated all the way；
Step 5：Another road 07 of the first working medium of the low temperature of the expander outlet of the step 3 second is by first flow control
Valve F3 is controlled flow, is heated by third party's working medium 17 that the first expanding machine J2 is exported by the 3rd heat exchanger E3, absorbs heat, is obtained
To the gas 09 of the first working medium of another road heating；
First working medium 06 of the low temperature of the expander outlet of the step 3 second is by the 3rd heat exchanger E3, the 4th heat exchanger
It is the gas 11 of the first working medium after converging that E4 heating converges；
Step 6：The gas 11 of the first working medium after the converging of the step 5 is supplemented or discharged by the 4th pressure-control valve F6
Stress control is completed, the gas 01 for obtaining the first working medium enters the circulation that compressor J1 completes working medium；
Step 7：In the step 2, the overheated gas 15 of third party's working medium are obtained by the 3rd by the 3rd pressure valve F5
After the overheated gas 16 of third party's working medium of pressure valve F5, the first expanding machine J2 expansion works are entered back into；By the 3rd pressure valve F5
Control third party's working medium overheated gas 15 pressure, by second flow valve F4 control third party's working medium liquid 13 flow from
And the temperature of the overheated gas 15 of third party's working medium is controlled, so as to control the first expanding machine J2 to export, third party's working medium 17 is close to face
The subcritical state on boundary（Temperature, pressure are close and less than critical point）；
Step 8：Third party's working medium 17 of the first expanding machine J2 outlets exchanges heat by the 3rd heat exchanger E3 in the step 5
Condensation, the liquid 18 of the third party's working medium for being condensed；Another road 07 of the first working medium of the low temperature of the second expander outlet by
First-class control valve F3 controls flow, so as to control cold, the third party's working medium 17 for meeting the first expanding machine J2 outlets is condensed
It is liquid；
Step 9：The liquid 18 of the third party's working medium condensed in the step 8 enters wet tank V, described wet tank
V outlet third party's working medium liquid 19 be changed into the liquid 13 of third party's working medium by the pressure-raising of liquid delivery pump P, by second
Flow control valve F4 controls enter the second heat exchanger E2, complete the circulation of third party's working medium；
Step 10：Compressor J1, the first expanding machine J2, the second expanding machine J3 collectively constitute drive train, output mechanical energy,
Drive machinery E operatings；The heat of third party's working medium 17 of the first expander outlet is inhaled by the first working medium of the second expander outlet
Receive.
4th heat exchanger E4 absorbs the heat of nature heat source substance.
In described step 1, the gas 01 of the first working medium compresses temperature-rise period at least once,
In described step 2, exchanged heat at least once by the gas 03 of the first working medium after first pressure control valve
Temperature-fall period,
In described step 3, expansion work drops the gas 05 of the first working medium lowered the temperature by heat exchanger at least once
Warm process, completes temperature rising, heat output, the process of temperature reduction of the first working medium.
In described step 2, the heating process that the liquid 13 of third party's working medium gasifies and overheats at least once is completed
First working medium heat transfer process.
In described step 7, the overheated gas 16 of third party's working medium expansion work process at least once completes first
Working medium heat is converted to the process of mechanical energy.
In described step 4, the first working medium 06 of the low temperature of the second expander outlet is at least once from nature heat
Source material absorbing heat process, completes the absorption of nature heat.
The state of the first working medium 06 of the low temperature of the second expander outlet can be gas or gas-liquid mixed in the step 3
Thing；The state of third party's working medium 17 of the first expander outlet in the step 5, step 7, step 8 can be gas or gas-liquid
Mixture.
Embodiment 3
According to the method described in embodiment 1, wherein：
In described step 1, the gas 01 of the first working medium compresses temperature-rise period at least once,
In described step 2, exchanged heat at least once by the gas 03 of the first working medium after first pressure control valve
Temperature-fall period,
In described step 3, expansion work drops the gas 05 of the first working medium lowered the temperature by heat exchanger at least once
Warm process, completes temperature rising, heat output, the process of temperature reduction of the first working medium.
In described step 2, the heating process that the liquid 13 of third party's working medium gasifies and overheats at least once is completed
First working medium heat transfer process.
In described step 7, the overheated gas 16 of third party's working medium expansion work process at least once completes first
Working medium heat is converted to the process of mechanical energy.
In described step 4, the first working medium 06 of the low temperature of the second expander outlet is at least once from nature heat
Source material absorbing heat process, completes the absorption of nature heat.
The state of the first working medium 06 of the low temperature of the second expander outlet can be gas or gas-liquid mixed in the step 3
Thing；The state of third party's working medium 17 of the first expander outlet in the step 5, step 7, step 8 can be gas or gas-liquid
Mixture.
Embodiment 4
According to the method described in embodiment 1, wherein：
In described step 1, the gas 01 of the first working medium has 4 second compression temperature-rise periods,
In described step 2, there are 5 heat exchange to lower the temperature by the gas 03 of the first working medium after first pressure control valve
Journey,
In described step 3, the gas 05 of the first working medium lowered the temperature by heat exchanger has 1 expansion work to lower the temperature
Journey, completes temperature rising, heat output, the process of temperature reduction of the first working medium.
In described step 2, the liquid 13 of third party's working medium has the heating process of 1 gasification and overheat, completes first
Working medium heat transfer process.
In described step 7, the overheated gas 16 of third party's working medium have 1 expansion work process, complete the first working medium
Heat is converted to the process of mechanical energy.
In described step 4, the first working medium 06 of the low temperature of the second expander outlet has 1 time from nature heat source substance
Heat process is absorbed, the absorption of nature heat is completed.
The state of the first working medium 06 of the low temperature of the second expander outlet is gas in the step 3；The step 5, step
Rapid 7, the state of third party's working medium 17 in step 8 is liquid.
Embodiment 5
According to the method described in embodiment 1, wherein：
In described step 1, the gas 01 of the first working medium has 2 second compression processes,
In described step 2, there are 3 heat exchange to lower the temperature by the gas 03 of the first working medium after first pressure control valve
Journey,
In described step 3, the gas 05 of the first working medium lowered the temperature by heat exchanger has 4 expansion works to lower the temperature
Journey, completes temperature rising, heat output, the process of temperature reduction of the first working medium.
In described step 2, the liquid 13 of third party's working medium has the heating process of 2 gasifications and overheat, completes first
Working medium heat transfer process.
In described step 7, the overheated gas 16 of third party's working medium have 2 expansion work processes, complete the first working medium
Heat is converted to the process of mechanical energy.
In described step 4, the first working medium 06 of the low temperature of the second expander outlet has 3 times from nature heat source substance
Heat process is absorbed, the absorption of nature heat is completed.
The state of the first working medium 06 of the low temperature of the second expander outlet is gas-liquid mixture in the step 3；The step
Rapid 5, the state of third party's working medium 17 of the first expander outlet in step 7, step 8 is gas-liquid mixture.
Embodiment 6
According to the method described in embodiment 1, wherein：
In described step 1, the gas 01 of the first working medium has 4 second compression temperature-rise periods,
In described step 2, there are 5 heat exchange to lower the temperature by the gas 03 of the first working medium after first pressure control valve
Journey,
In described step 3, the gas 05 of the first working medium lowered the temperature by heat exchanger has 6 expansion works to lower the temperature
Journey, completes temperature rising, heat output, the process of temperature reduction of the first working medium.
In described step 2, the liquid 13 of third party's working medium has the heating process of 5 gasifications and overheat, completes first
Working medium heat transfer process.
In described step 7, the overheated gas 16 of third party's working medium have 7 expansion work processes, complete the first working medium
Heat is converted to the process of mechanical energy.
In described step 4, the first working medium 06 of the low temperature of the second expander outlet has 3 times from nature heat source substance
Heat process is absorbed, the absorption of nature heat is completed.
The state of the first working medium 06 of the low temperature of the second expander outlet is gas-liquid mixture in the step 3；The step
Rapid 5, the state of third party's working medium 17 of the first expander outlet in step 7, step 8 is gas-liquid mixture.
Embodiment 7
According to the method described in embodiment 1, wherein：
The first working medium chosen forms presence, boiling point less than the selected nature for absorbing heat under having normal temperature with gas
The characteristic of the temperature of heat source substance, in order to absorb heat from nature；Selected third party's working medium have low critical-temperature,
The characteristic of low critical pressure, gasification and overheat, the first expanding machine in order to the liquid of third party's working medium are in relative low pressure
Operating condition.
Embodiment 8
The method that nature Btu utilization is carried out using the system described in embodiment 1, the first, the 3rd working medium is now two
Carbonoxide, methods described includes following：
1000Kmol/ hours, 15 DEG C, the entrance compressor J1 of gas 01 of 0.51795Mpa carbon dioxide, by first pressure
The pressure of gas 02 of the carbon dioxide that valve controls compressor J1 to export is controlled for 5.39Mpa, during compressor outlet titanium dioxide
The temperature of gas 02 of carbon accordingly rises a height of 228 DEG C；
The gas 03 of the carbon dioxide of valve F1 is controlled to be changed by First Heat Exchanger E1, the second heat exchanger E2 by first pressure
Heat drop temperature, due to the factor of circulating resistance, pressure, temperature drop are changed into 5.35Mpa, lower the temperature by heat exchanger the two of 45 DEG C
The gas 05 of carbonoxide；
1000Kmol/ hours, 45 DEG C, the gas 05 of carbon dioxide lowered the temperature by heat exchanger of 5.35Mpa enter second
Expanding machine J3 expansion works, control valve F2 to control the pressure of carbon dioxide 06 of the low temperature of the second expander outlet to be by second pressure
0.53795Mpa, it is -111 DEG C to calculate corresponding equivalent temperature, and the carbon dioxide 06 of the low temperature of second expander outlet is
The saturated mode that gas-liquid coexists, actual temperature is saturation temperature -55.75 DEG C of the carbon dioxide in 0.53795Mpa, liquid therein
Carbon dioxide content is 11.63%, and content liquid is determined by the temperature of the second expanding machine J3 entrances carbon dioxide 16, pressure；It is interior
The data of appearance are all calculated value, it is proposed that do not make an amendment
06 point of the carbon dioxide of the low temperature of the second expander outlet is two-way, the titanium dioxide of the low temperature of the second expander outlet
The gas of 08 carbon dioxide heated all the way by the heating of nature heat source substance by the 4th heat exchanger E4 all the way of carbon
10, another road 07 of the carbon dioxide of the low temperature of the second expander outlet obtains what another road was heated by the 3rd heat exchanger E3
The gas 09 of carbon dioxide, the gas 09 of the carbon dioxide that the gas 10 of the carbon dioxide for heating all the way is heated with another road converges
It is the gas 11 of the carbon dioxide after converging；In the case of the temperature of nature heat source substance is for 30 DEG C, the titanium dioxide after converging
The temperature of the gas 11 of carbon is 15 DEG C, and pressure is 0.51795Mpa；The carbon dioxide of the low temperature of the second expander outlet it is another
Road 07 is by the 3rd heat exchanger E3 by first-class control valve F3 controls flow, the dioxy so as to control the first expanding machine J2 to export
Change carbon 17 and be in 31 DEG C, the subcritical state of 7.06Mpa（Temperature, pressure are close and less than critical point）.
By heating converge after carbon dioxide gas 11, supplement or discharge by the 4th pressure-control valve F6,
So as to control the pressure of the gas 01 of compressor J1 entrance carbon dioxide, compressor J1 is input to, completes circulation；
During First Heat Exchanger E1, the second heat exchanger E2 release heat equivalent in the liquid dioxy of 1212 Kmol
Change the gasification of carbon and the heat of overheat；
The liquid 18 of the carbon dioxide of the 3rd heat exchanger E3 condensations, 31 DEG C of its temperature, pressure 7.06Mpa, into liquid two
Carbonoxide storage tank V；
The liquid 19 of the carbon dioxide of storage tank V outputs is by pump pressure-raising to 26.2Mpa；
Liquid CO 2 12 after pump pressure-raising controls flow for 1212Kmol/ hours by valve F4, by heat exchanger E1
Gasification, the overheated gas 15 that carbon dioxide is obtained by heat exchanger E2 overheats, the overheated gas of carbon dioxide are controlled by valve F5
15 pressure is 25.8Mpa, and the flow of liquid 13 of carbon dioxide is controlled by second control valve F4 so as to control titanium dioxide
The temperature of the overheated gas 15 of carbon is 165 DEG C；
Enter the first expander by the overheated gas 16 of the carbon dioxide of the 3rd pressure-control valve F5 to do work；
1212Kmol/ hours of first expanding machine J2 outlets, 7.06Mpa, 31 DEG C of carbon dioxide 17 is by heat exchanger E3
The liquid 18 of the carbon dioxide for being condensed, its pressure be 7.06Mpa, 31 DEG C of temperature, it is complete into liquid CO 2 storage tank V
Into circulation；
The carbon dioxide of the low temperature of the second expander outlet all the way 08 pressure be 0.53795Mpa, -55.75 DEG C, contain
11.63% liquid, is heated by the 4th heat exchanger E4 by 30 DEG C of nature heat source substance, absorbs the heat of 3195668KJ/ hours
Amount；
Compressor J1 need to be input into 7489360KJ/ hours energy, the first expanding machine J1 export 6441161KJ/ hours energy,
Second expanding machine J2 exports 4419105KJ/ hours energy, pump P and need to be input into 82213KJ/ hours energy, compressor J1, first swollen
Swollen machine J2, the second expanding machine J3 collectively constitute drive train, exportable 3277881KJ/ hours energy, and corrected performance is
910KW；Output mechanical energy, drives machinery E operatings；4th heat exchanger E4 absorbs the heat of nature heat source substance；
The key of control：The carbon dioxide for controlling the first expanding machine J2 to export connects near-critical subcritical state（Temperature, pressure
Power is close and less than critical point）, reduce it and be condensed into liberated heat in liquid process, so as to increase the 4th heat exchanger E4 to certainly
The heat absorption of right boundary heat source substance.
The converting heat that 4th heat exchanger E4 draws from nature is the mechanical energy of the first expanding machine J2 outputs, can be used for machine
The driving of tool, it is adaptable to drive electrical power generators, the navigation of ship, the traveling of vehicle, the flight of aircraft, drives electrical power generators
Process adapts to the process of refrigerastion of factory, city central air-conditioning refrigeration system, and benefit will be extended.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this Shen
Please in embodiment and the feature in embodiment in the case where not conflicting, can mutually be combined.Protection model of the invention
Enclose the equivalent side of technical characteristic in the technical scheme that should be recorded with claim, including the technical scheme of claim record
Case is protection domain.Equivalent i.e. within this range is improved, also within protection scope of the present invention.
Claims (7)
1. a kind of method of nature Btu utilization, methods described includes nature heat utilization system, and system includes compressor
（J1）, the compressor（J1）Valve is controlled with first pressure（F1）Connection, the first pressure controls valve（F1）With the first heat exchange
Device（E1）Connection, the First Heat Exchanger（E1）By the first pipeline and the second heat exchanger（E2）Connection, second heat exchanger
（E2）With the second expanding machine（J3）Connection, second expanding machine（J3）Valve is controlled with second pressure（F2）Connection, described second
Pressure-control valve（F2）Respectively with the 3rd heat exchanger（E3）, the 4th heat exchanger（E4）Connection；
3rd heat exchanger（E3）With first-class control valve（F3）Connection；
3rd heat exchanger（E3）With first-class control valve（F3）The circuit of connection and the 4th heat exchanger（E4）Parallel communication,
The total line and compressor of the parallel communication（J1）Connection,
The 3rd pipeline is additionally provided with the total line of the parallel communication, the 3rd pipeline is provided with the 4th pressure-control valve
（F6）；
3rd heat exchanger（E3）With wet tank（V）Connection, the wet tank（V）With liquid delivery pump（P）Connection, institute
State liquid delivery pump（P）With second control valve（F4）Connection, the second control valve（F4）With the second heat exchanger
（E2）Connection, second heat exchanger（E2）By the second pipeline and First Heat Exchanger（E1）Connection, the First Heat Exchanger
（E1）With the 3rd pressure-control valve（F5）Connection, the 3rd pressure-control valve（F5）With the first expanding machine（J2）Connection, it is described
First expanding machine（J2）With the 3rd heat exchanger（E3）Connection；
The compressor（J1）, the first expanding machine（J2）, the second expanding machine（J3）Drive train is collectively constituted, it is mechanical to driving
（E）Output mechanical energy；
The method that the system carries out nature Btu utilization, it is characterised in that：The described method comprises the following steps：
Step 1：The gas of the first working medium（01）By compressor（J1）Compression obtains the first working medium after the compression of compressor outlet
Gas（02）, valve is controlled by first pressure（F1）Control the gas of the first working medium after the compression of the compressor outlet
（02）Pressure, the gas so as to the first working medium after the compression for controlling the compressor outlet（02）Temperature meet third party's work
The liquid of matter（13）Gasification and superheating process heat the need for；
Step 2：The gas of rear first working medium of the compression of step 1 compressor outlet（02）Valve is controlled by first pressure
（F1）Obtain the gas by the first working medium after first pressure control valve（03）, it is described by after first pressure control valve the
The gas of one working medium（03）By First Heat Exchanger（E1）, the second heat exchanger（E2）Cooling, forms the lowered the temperature by heat exchanger
The gas of one working medium（05）；The liquid of third party's working medium（13）By the second heat exchanger（E2）Heating and gasifying is third party's working medium
Saturated gas（14）, the saturated gas of third party's working medium（14）By First Heat Exchanger（E1）It is heated to be the overheat of third party's working medium
Gas（15）, by the 3rd pressure-control valve（F5）Control the overheated gas of third party's working medium（15）Pressure, by second flow control
Valve processed（F4）Control the liquid of third party's working medium（13）Flow so as to control the overheated gas of third party's working medium（15）Temperature；
Step 3：The gas of the first working medium that the step 2 is lowered the temperature by heat exchanger（05）Into the second expanding machine（J3）Expansion is done
Work(obtains the first working medium of the low temperature of the second expander outlet（06）, valve is controlled by second pressure（F2）Control second expansion
First working medium of the low temperature of machine outlet（06）Pressure, pressure reduction while temperature accordingly reduce；By second pressure control
Valve（F2）Control the first working medium of the low temperature of second expander outlet（06）Pressure so that control it is described second expansion
First working medium of the low temperature of machine outlet（06）Temperature less than choose nature heat source substance temperature；
Step 4：First working medium of the low temperature of the expander outlet of the step 3 second（06）Be divided into two-way, the second expanding machine goes out
First working medium of the low temperature of mouth is all the way（08）By the 4th heat exchanger（E4）Heated by the nature heat source substance chosen, absorbed
Heat, the gas of the first working medium for being heated all the way（10）；
Step 5：Another road of the first working medium of the low temperature of the expander outlet of the step 3 second（07）By first-class control valve
（F3）Control flow, by the 3rd heat exchanger（E3）By the first expanding machine（J2）Third party's working medium of outlet（17）Heating, absorbs
Heat, obtains the gas of the first working medium of another road heating（09）；
First working medium of the low temperature of the expander outlet of the step 3 second（06）By the 3rd heat exchanger（E3）, the 4th heat exchanger
（E4）It is the gas of the first working medium after converging that heating converges（11）；
Step 6：The gas of the first working medium after the converging of the step 5（11）By the 4th pressure-control valve（F6）Supplement is discharged
Stress control is completed, the gas of the first working medium is obtained（01）Into compressor（J1）Complete the circulation of working medium；
Step 7：In the step 2, the overheated gas of third party's working medium（15）By the 3rd pressure-control valve（F5）Obtain by
3rd pressure-control valve（F5）Third party's working medium overheated gas（16）Afterwards, the first expanding machine is entered back into（J2）Expansion work；
By the 3rd pressure-control valve（F5）Control the overheated gas of third party's working medium（15）Pressure, by second control valve（F4）Control
The liquid of third party's working medium processed（13）Flow so as to control the overheated gas of third party's working medium（15）Temperature, so as to control
One expanding machine（J2）Outlet third party's working medium（17）Connect near-critical subcritical state；
Step 8：First expanding machine in the step 5（J2）Third party's working medium of outlet（17）By the 3rd heat exchanger（E3）Change
Heat condensation, the liquid of the third party's working medium for being condensed（18）；Another road of the first working medium of the low temperature of the second expander outlet
（07）By first-class control valve（F3）Control flow, so as to control cold, meets the first expanding machine（J2）The third party of outlet
Working medium（17）Heat exchange is condensed into liquid；
Step 9：The liquid of the third party's working medium condensed in the step 8（18）Into wet tank（V）, described wet tank
（V）The liquid of third party's working medium of outlet（19）By liquid delivery pump（P）Pressure-raising be changed into the liquid of third party's working medium（13）、
By second control valve（F4）Control enters the second heat exchanger（E2）, complete the circulation of third party's working medium；
Step 10：Compressor（J1）, the first expanding machine（J2）, the second expanding machine（J3）Collectively constitute drive train, output machinery
Can, drive machinery（E）Operating；4th heat exchanger（E4）Absorb the heat of nature heat source substance.
2. method according to claim 1, it is characterised in that
In described step 1, the gas of the first working medium（01）Temperature-rise period is compressed at least once,
In described step 2, valve is controlled by first pressure（F1）The gas of the first working medium afterwards（03）Change at least once
Hot temperature-fall period,
In described step 3, the gas of the first working medium lowered the temperature by heat exchanger（05）Expansion work cooling at least once
Process.
3. method according to claim 1, it is characterised in that：
In described step 2, the liquid of third party's working medium（13）The heating process for gasifying at least once and overheating.
4. method according to claim 1, it is characterised in that：
In described step 7, the overheated gas of third party's working medium（16）Expansion work process at least once.
5. method according to claim 1, it is characterised in that
In described step 4, the first working medium of the low temperature of the second expander outlet（06）At least once from nature thermal source
Material absorbing heat process；
In described step 5, third party's working medium of the first expander outlet（17）Heat by the of the second expander outlet
One working medium absorbs.
6. method according to claim 1, it is characterised in that：The of the low temperature of the second expander outlet in the step 3
One working medium（06）State can be gas or gas-liquid mixture；The first expanding machine in the step 5, step 7, step 8 goes out
Third party's working medium of mouth（17）State can be gas or gas-liquid mixture.
7. method according to claim 1, it is characterised in that：First working medium is deposited under having normal temperature with gas formation
In the characteristic of the temperature of, boiling point less than the selected nature heat source substance for absorbing heat；Selected third party's working medium has
Low critical-temperature, the characteristic of low critical pressure.
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| US5680764A (en) * | 1995-06-07 | 1997-10-28 | Clean Energy Systems, Inc. | Clean air engines transportation and other power applications |
| CN1807848A (en) * | 2005-01-20 | 2006-07-26 | 陈祖茂 | Double-fluid steam type double power generation arrangement |
| CN101614139A (en) * | 2009-07-31 | 2009-12-30 | 王世英 | Multicycle power generation thermodynamic system |
| CN203296840U (en) * | 2013-06-06 | 2013-11-20 | 董仲合 | Power machine |
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2016
- 2016-06-03 CN CN201610385466.7A patent/CN105971681B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5680764A (en) * | 1995-06-07 | 1997-10-28 | Clean Energy Systems, Inc. | Clean air engines transportation and other power applications |
| CN1807848A (en) * | 2005-01-20 | 2006-07-26 | 陈祖茂 | Double-fluid steam type double power generation arrangement |
| CN101614139A (en) * | 2009-07-31 | 2009-12-30 | 王世英 | Multicycle power generation thermodynamic system |
| CN203296840U (en) * | 2013-06-06 | 2013-11-20 | 董仲合 | Power machine |
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Effective date of registration: 20190627 Address after: 719000 Jinjitan Town, Yuyang District, Yulin City, Shaanxi Province Patentee after: Yanzhou Coal Yulin Nenghua Co.,Ltd. Address before: 443200 Yingbin Avenue, Zhijiang City, Yichang City, Hubei Province Patentee before: Cui Jingsi |
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Effective date of registration: 20201119 Address after: 014000 the Inner Mongolia Autonomous Region Baotou Jiuyuan Industrial Park, Shenhua science and Technology Park No. 1 Patentee after: Cui Jingsi Address before: 719000 Jinjitan Town, Yuyang District, Yulin City, Shaanxi Province Patentee before: YANZHOU COAL MINNG YULIN ENERGY CHEMICAL Co.,Ltd. |