Summary of the invention
The object of the present invention is to provide a kind of compound electricity generation system, solve the high-quality low use of biomass energy in prior art, the problem that the generating efficiency of electricity generation system is lower.
In order to achieve the above object, the embodiment of the present invention provides a kind of compound electricity generation system, comprising:
Steam turbine, described steam turbine is used for the power conversion of steam being mechanical power and discharges the rear exhaust steam produced of conversion;
The generator be connected with described steam turbine, described generator is used for the mechanical power that described steam turbine is converted to be converted to electric energy;
The condenser be connected with described steam turbine, described condenser is used for the exhaust steam that described steam turbine is discharged to be condensed into condensate water;
The waste heat boiler be connected with described condenser respectively and biomass boiler, described waste heat boiler heats and evaporate obtain first via saturated vapor to flowing into the condensed water of described waste heat boiler, and the condensed water of described biomass boiler to the described biomass boiler of inflow heats and evaporate and obtain the second road saturated vapor;
Described first via saturated vapor is transferred to described biomass boiler by described waste heat boiler; Described biomass boiler utilizes high-temperature biomass flue gas to carry out Overheating Treatment to first via saturated vapor and the second road saturated vapor, obtains superheated steam and described superheated steam is transferred to described steam turbine.
Wherein, described waste heat boiler comprises: the be connected with described condenser first solidifying water heater, and the described first solidifying water heater carries out first time for the condensed water utilizing the smoke convection of waste heat boiler and enter described waste heat boiler and heats;
Described biomass boiler comprises: the be connected with described condenser second solidifying water heater, and the described second solidifying water heater carries out first time for the condensed water utilizing the smoke convection of biomass boiler and enter described biomass boiler and heats;
Described waste heat boiler also comprises an oxygen-eliminating device, and described oxygen-eliminating device respectively water heater solidifying with described first and the second solidifying water heater is connected, and described oxygen-eliminating device is used for the condensed water after to first time heating and carries out heating deoxygenation.
Wherein, described waste heat boiler also comprises: the first superheater be connected with described oxygen-eliminating device, and described first superheater is used for carrying out micro-overheated rear output to the saturated vapor that described oxygen-eliminating device exports.
Wherein, described waste heat boiler also comprises: the first economizer be connected with described oxygen-eliminating device and the first evaporimeter be connected with described first economizer; The saturated feedwater of the first via that described oxygen-eliminating device exports enters described first economizer and described first evaporimeter carries out heating and evaporating obtaining first via saturated vapor.
Wherein, described biomass boiler also comprises: the second economizer be connected with described oxygen-eliminating device and the second evaporimeter be connected with described second economizer; The second saturated feedwater in road that described oxygen-eliminating device exports enters described second economizer and described second evaporimeter carries out heating and evaporating obtaining the second road saturated vapor.
Wherein, described biomass boiler also comprises: the second superheater be connected respectively with described first evaporimeter and described second evaporimeter, described second superheater is used for utilizing high-temperature biomass flue gas to carry out Overheating Treatment to described first via saturated vapor and described second road saturated vapor, obtains superheated steam and described superheated steam is transferred to described steam turbine.
Wherein, be connected between described condenser with described waste heat boiler by the first condensate pump, described first condensate pump is for carrying the condensate water in described condenser to the described first solidifying water heater;
Be connected by the second condensate pump between described condenser with described biomass boiler, described second condensate pump is for carrying the condensate water in described condenser to the described second solidifying water heater.
Wherein, be connected between described oxygen-eliminating device with described first economizer by the first high-pressure hydraulic pump, the saturated feedwater of the first via that described first high-pressure hydraulic pump is used for described oxygen-eliminating device to export is delivered to described first economizer;
Be connected by the second high-pressure hydraulic pump between described oxygen-eliminating device with described second economizer, the second saturated feedwater in road that described second high-pressure hydraulic pump is used for described oxygen-eliminating device to export is delivered to described second economizer.
Technique scheme of the present invention at least has following beneficial effect:
In the compound electricity generation system of the embodiment of the present invention, by waste heat boiler and biomass boiler, industrial exhaust heat is combined with living beings, low-temperature industrial waste heat is mainly used in heating and the evaporation of waste heat boiler feedwater and biomass boiler feedwater, the biomass flue gas of high temperature is used for the overheated of saturated vapor, realize temperature counterpart, cascade utilization; The embodiment of the present invention is not increasing on the basis of investment, improves the acting ability of industrial exhaust heat, decreases the available energy loss of biomass energy, improve the generating efficiency of whole electricity generation system.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention is directed to the high-quality low use of biomass energy in prior art, the problem that the generating efficiency of electricity generation system is lower, a kind of compound electricity generation system is provided, by waste heat boiler and biomass boiler, industrial exhaust heat is combined with living beings, low-temperature industrial waste heat is mainly used in heating and the evaporation of waste heat boiler feedwater and biomass boiler feedwater, the biomass flue gas of high temperature is used for the overheated of saturated vapor, realizes temperature counterpart, cascade utilization; The embodiment of the present invention is not increasing on the basis of investment, improves the acting ability of industrial exhaust heat, decreases the available energy loss of biomass energy, improve the generating efficiency of whole electricity generation system.
As shown in Figure 1, the embodiment of the present invention provides a kind of compound electricity generation system, comprising:
Steam turbine 1, described steam turbine 1 is for being mechanical power by the power conversion of steam and discharging the exhaust steam produced in transfer process;
The generator 2 be connected with described steam turbine 1, described generator 2 is converted to electric energy for the mechanical power be converted to by described steam turbine 1; The electric energy that generator 2 obtains is for for user.
The condenser 3 be connected with described steam turbine 1, described condenser 3 is condensed into condensate water for the exhaust steam of being discharged by described steam turbine 1;
The waste heat boiler 4 be connected with described condenser 3 respectively and biomass boiler 5, described waste heat boiler 4 heats and evaporate obtain first via saturated vapor to flowing into the condensed water of described waste heat boiler 4, and the condensed water of described biomass boiler 5 to the described biomass boiler 5 of inflow heats and evaporate and obtain the second road saturated vapor.
Described first via saturated vapor is transferred to described biomass boiler by described waste heat boiler 4; Described biomass boiler 5 utilizes high-temperature biomass flue gas to carry out Overheating Treatment to first via saturated vapor and the second road saturated vapor, obtains superheated steam and described superheated steam is transferred to described steam turbine 1.
Waste heat boiler 4 and biomass boiler 5 is utilized industrial exhaust heat and living beings to be combined in the embodiment of the present invention; Concrete, low-temperature industrial waste heat is divided into two-way, one tunnel is used for heating and the evaporation of waste heat boiler feedwater (namely flowing into the condensed water of waste heat boiler), and another road is used for heating and the evaporation of biomass boiler feedwater (namely flowing into the condensed water of biomass boiler); Improve the acting ability of industrial exhaust heat, decrease the available energy loss of biomass energy; The high-temperature biomass flue gas of biomass boiler is further utilized to carry out Overheating Treatment to the saturated vapor that waste heat boiler and biomass boiler produce, improve the degree of superheat of steam, increase steam taste, thus increase the energy of steam, improve the conversion efficiency of steam turbine, and then improve the generating efficiency of whole system; In theory, this compound electricity generation system can improve generating efficiency relative to conventional power generation systems and reaches more than 5%.
The structure of waste heat boiler 4 that concrete composition graphs 1 pair of embodiment of the present invention provides, the structure of biomass boiler 5 and the annexation between waste heat boiler 4 and biomass boiler 5 are described in detail:
As shown in Figure 1, in the above embodiment of the present invention, described waste heat boiler 4 comprises: the be connected with described condenser 3 first solidifying water heater 41, and the described first solidifying water heater 41 carries out first time for the condensed water utilizing the smoke convection of waste heat boiler and enter described waste heat boiler and heats;
Described biomass boiler 5 comprises: the be connected with described condenser 3 second solidifying water heater 51, and the described second solidifying water heater 51 carries out first time for the condensed water utilizing the smoke convection of biomass boiler and enter described biomass boiler and heats;
Described waste heat boiler 4 also comprises an oxygen-eliminating device 42, and described oxygen-eliminating device 42 respectively water heater 41 solidifying with described first and the second solidifying water heater 51 is connected, and described oxygen-eliminating device 42 is for carrying out heating deoxygenation to the condensed water after first time heating.
In the embodiment of the present invention, the condensate water that condenser 3 produces is divided into two-way, and the first solidifying water heater 41 that a road enters waste heat boiler 4 carries out being heated as waste heat boiler feedwater; The second solidifying water heater 51 that another road enters biomass boiler 5 carries out being heated as biomass boiler feedwater.Condensed water after heating all enters the oxygen-eliminating device 42 of waste heat boiler 4, exports, be divided into the saturated feedwater of the saturated feedwater of saturated vapor, the first via and the second road through deoxygenation steam-generating bank heating deoxygenation Hou Fen tri-tunnel of oxygen-eliminating device 42; Wherein, the flow on each road can concrete Optimal Setting as the case may be, is not limited to a fixed value, in this no limit.
Further, waste heat boiler 4 described in the above embodiment of the present invention also comprises: the first superheater 43 be connected with described oxygen-eliminating device 42, and described first superheater 43 carries out micro-overheated rear output for the saturated vapor exported described oxygen-eliminating device 42.
The first superheater 43 that the saturated vapor that in the above embodiment of the present invention, oxygen-eliminating device 42 exports enters waste heat boiler 4 carries out micro-overheated rear output for user, namely the low-pressure steam that this first superheater 43 produces can supply garden process steam, heat supply and refrigeration etc., thus improves the utilization ratio of industrial exhaust heat.
Further, waste heat boiler 4 described in the above embodiment of the present invention also comprises: the first economizer 44 be connected with described oxygen-eliminating device 42 and the first evaporimeter 45 be connected with described first economizer 44; The saturated feedwater of the first via that described oxygen-eliminating device 42 exports enters described first economizer 44 and described first evaporimeter 45 carries out heating and evaporating obtaining first via saturated vapor.
The saturated feedwater of the first via that in the above embodiment of the present invention, oxygen-eliminating device 42 exports enters the first economizer 44 of waste heat boiler 4 and the first evaporimeter 45 carries out heating and evaporating obtaining first via saturated vapor, first via saturated vapor enters biomass boiler 5, carries out Overheating Treatment by biomass boiler 5.
Further, biomass boiler 5 described in the above embodiment of the present invention also comprises: the second economizer 52 be connected with described oxygen-eliminating device 42 and the second evaporimeter 53 be connected with described second economizer 52; The second saturated feedwater in road that described oxygen-eliminating device 42 exports enters described second economizer 52 and described second evaporimeter 53 carries out heating and evaporating obtaining the second road saturated vapor, and the second road saturated vapor enters described biomass boiler 5 again.
The second saturated feedwater in road that in the above embodiment of the present invention, oxygen-eliminating device 42 exports enters after the second economizer 52 of biomass boiler 5 and the second evaporimeter 53 carry out heating and evaporate and obtains the second road saturated vapor, second road saturated vapor enters biomass boiler 5 again, carries out Overheating Treatment by biomass boiler 5.
Concrete, biomass boiler 5 described in the above embodiment of the present invention also comprises: the second superheater 54 be connected respectively with described first evaporimeter 45 and described second evaporimeter 53, described second superheater 54 carries out Overheating Treatment for utilizing high-temperature biomass flue gas to described first via saturated vapor and described second road saturated vapor, obtains superheated steam and described superheated steam is transferred to described steam turbine 1.
In the above embodiment of the present invention, second superheater 54 of biomass boiler 5 utilizes high-temperature biomass flue gas first via saturated vapor and the second road saturated vapor of biomass boiler, reach high-quality high object, improve the steam parameter of traditional waste heat boiler, decrease the available energy loss of the high-temperature flue gas of biomass boiler, the generating efficiency that improve whole system reaches more than 5%.
It should be noted that, condenser 3 described in the above embodiment of the present invention is connected by the first condensate pump 6 with between described waste heat boiler 4, and described first condensate pump 6 is for carrying the condensate water in described condenser 3 to the described first solidifying water heater 41;
Be connected by the second condensate pump 7 between described condenser 3 with described biomass boiler 5, described second condensate pump 7 is for carrying the condensate water in described condenser 3 to the described second solidifying water heater 51.
It should be noted that further, oxygen-eliminating device 42 described in the above embodiment of the present invention is connected by the first high-pressure hydraulic pump 8 with between described first economizer 44, and described first high-pressure hydraulic pump 8 is delivered to described first economizer 44 for the saturated feedwater of the first via exported by described oxygen-eliminating device 42;
Be connected by the second high-pressure hydraulic pump 9 between described oxygen-eliminating device 42 with described second economizer 52, described second high-pressure hydraulic pump 9 is delivered to described second economizer 52 for the second saturated feedwater in road exported by described oxygen-eliminating device 42.
The mode of the multilevel heat source cascade utilization that the compound electricity generation system that the embodiment of the present invention improves adopts industrial exhaust heat to combine with living beings, low-temperature industrial waste heat is mainly used in heating and the evaporation of boiler feedwater, the biomass flue gas of high temperature is mainly used in the overheated of steam; Realize temperature counterpart, cascade utilization; And the embodiment of the present invention is not increasing on the basis of investment, improve the acting ability of industrial exhaust heat, decrease the available energy loss of biomass energy, the generating efficiency improving whole system reaches more than 5%.
It should be noted that, the industrial exhaust heat of the embodiment of the present invention includes but not limited to the fume afterheat of the relevant industries such as iron and steel, calcium carbide, cement kiln, glass furnace.The living beings of the embodiment of the present invention also can adopt other high-grade energy such as natural gas, coal.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.