CN206655723U - A kind of change system that carbon dioxide recycle generating is realized using cement plant waste heat - Google Patents

Abstract

The utility model provides a kind of change system that carbon dioxide recycle generating is realized using cement plant waste heat, including liquid CO₂Storage tank, it is pumped by device, CO₂Energy storage equipment, flow straightener, turbine/piston expansion engine, generator, cooling device and compression set；The CO₂Energy storage equipment, for by liquid CO₂The low-pressure liquid CO pumped out in storage tank₂Fluid directly absorbs the discarded waste heat of different temperatures caused by cement producing line or high temperature heat accumulation of energy is converted into different temperatures, different pressures, the supercritical CO of different-energy density₂Fluid；The flow straightener, for by different temperatures, different pressures, different-energy density supercritical CO₂Liquid turns are isobaric supercritical CO₂Fluid.The change system realizes that carbon dioxide recycle generates electricity using the carbon dioxide trapped as working medium, using all kinds of discarded waste heats that caused temperature fluctuation in cement production process is big, the temperature difference is big for main energy sources, and power consumption is low.

Description

A kind of change system that carbon dioxide recycle generating is realized using cement plant waste heat

Technical field

It the utility model is related to the technical field of low-carbon and using energy source equipment, and in particular to one kind utilizes cement plant waste heat Realize the change system that carbon dioxide recycle generates electricity.

Background technology

Climate change has turned into one of the problem of influence human survival and development, and the carbon dioxide of industrial discharge is considered as It is the main reason for causing climate warming.China is as developing country maximum in the world, the primary energy based on coal Energy resource structure is used as with the secondary energy sources based on thermal power generation.With increasing rapidly for economic total volume, primary energy and secondary The CO of the energy₂Discharge, which has, increases the characteristics of fast, total amount is big, and current carbon emission reduction and the CCS of the economy of reply climate change Or the CCUS choices of technology are limited, coal chemical industry, synthesis gas and coal vaporization-combined combustion and steam turbine power (IGCC) field are concentrated mainly on Collecting carbonic anhydride, transport and closing and carbon dioxide be used for the displacement of reservoir oil, the research of purging and application.Water worldwide Mud production field is there is not yet research or the practice report of any specific Carbon Dioxide Application.

At present, the actual production capacity of basic architecture material-cement of economic construction of China exceedes 3,500,000,000 tons, dry-process rotory kiln life Producing line is a plurality of up to 1700.The manufacturing enterprise of cement is generally acknowledged high energy-consuming enterprises, is one of primary discharge source of carbon dioxide, no Only once the energy (coal) and secondary energy sources (electricity) consumption are big, and have substantial amounts of waste pollutant (CO₂、SO₂、NO_x, dust) discharge, Also largely discarded waste heat, and the temperature of discarded waste heat fluctuates greatly with the change of raw materials and fuel and kiln system operating mode.To realize Policy energy-saving and emission-reduction, (kiln tail) has all been built in nearly all cement plant, and " preheater is discarded waste heat boiler+(kiln hood) grate-cooler and given up Abandon the electricity generation system of waste heat boiler ", what is typically utilized is 300 DEG C of the discarded waste heat and preheater of more than 300 DEG C of kiln hood grate-cooler Discarded waste heat above, substantial amounts of 80 DEG C~300 DEG C of discarded waste heat can not utilize and directly empty and cause thermal pollution, meanwhile, Also substantial amounts of other high-temperature services radiation waste heat such as manufacture of cement capital equipment-kiln head cover (inner top up to 700 DEG C extremely 1500 DEG C) and rotary kiln shell (for high temperature section up to 300 DEG C~500 DEG C, low-temperature zone is up to 150 DEG C~300 DEG C) and kiln tail smoke-box (smoke-box Region internal temperature is up to 900 DEG C~1100 DEG C) high temperature heat radiation pollution, the high-temperature service in these manufacture of cement is existing remaining Heat boiler can not be used directly to produce high-temperature high-pressure steam.

For the strong heat radiation of working environment pollution and the radiant heat energy using these high-temperature services, the applicant can be reduced Chinese patent provide " using cylinder of rotary kiln radiant heat energy for cogeneration device ZL201420380874.X with ZL201420562882.6 " and " device using dry-process rotory kiln kiln head cover waste heat for cogeneration ZL201420382011.6 ", but involved device is because that can only be used for preheating water for boiler and preheated air, it is impossible to effectively solve high The radiant heat of warm equipment utilizes and thermal pollution, it is impossible to popularizes application.Existing cement production enterprise is to prevent high temperature from causing to turn round Kiln is scrapped, and the standard configuration for setting rows of hair-dryer to be rotary kiln, is reduced back with lasting the blowing a cold wind over of rows of hair drier The trunk temperature of rotary kiln, this method not only increase power consumption and also result in thermal pollution, and the increase of power consumption also increases carbon emission.So far state Inside and outside there is no can effectively eliminate rotary kiln type high temp facility environment thermal pollution or recycling rotary kiln high-temperature service radiation waste heat Method, also without the mode and equipment that waste heat can be effectively discarded using a large amount of 80 DEG C~300 DEG C low temperature.

In addition, with the development of CCS technologies, supercritical carbon dioxide electricity generation system is a kind of dioxy with supercriticality Change carbon to have received significant attention for the Brayton Cycle system of working medium, supercritical carbon dioxide electricity generation system mainly include thermal source, High speed turbine, high-speed engine, high-speed compressor, cooler etc., its high-performance heat exchanger are that supercritical generating system engineering should Basis.Circulatory mediator in its cyclic process is carbon dioxide, and in total recycle process, carbon dioxide is in overcritical State, do not undergo phase transition, cyclic process is that supercritical carbon dioxide boosts through compressor --- with the isobaric heating dioxy of heat exchanger Changing carbon working medium, --- working medium enters turbo turbine acting drive motor generating --- working medium enters cooler --- and entered again Enter compressor and form closed cycle.The system thermal efficiency of the more traditional heat energy power-generating system of supercritical carbon dioxide electricity generation system, Gross weight and floor space, pollutant emission etc. show significant advantage, but its main movement equipment is all using at a high speed Gyration form, machining accuracy and material property control require high, and supercritical carbon dioxide Brayton cycle requires compression Machine parameter is near critical point, reduces heat exchange difference, and work done during compression still accounts for the 30% of turbine output during its compressor compresses More than, work done during compression still accounts for 40% to the 50% of turbine output in the compression process of practice, i.e., the compressor of system from Power consumption is still higher.Heat exchange property mutation simultaneously for Near The Critical Point need to take into full account operation allowance, realize that these targets will Ask compact, efficient and reliable heat exchanger to carry out quick heat exchange, realize Low Temperature Difference high efficient heat exchanging.Existing overcritical two The heat exchange of carbonoxide experiment loop uses printed circuit platelet heat exchangers (PCHE) mostly, and it is applied to elevated operating temperature and height Operating pressure, and there is good extended capability, meet the requirement with the isobaric heating carbon dioxide working medium of heat exchanger, but mechanism is answered Miscellaneous, investment is big, and is objectively difficult in adapt to China's major part quality coal in cement kiln systems and discards waste heat supply temperature with raw materials and fuel and kiln system The big situation of fluctuation of operating conditions.Furthermore the high efficiency of its system circulation need to be established in (the circulation of condensator outlet i.e. compressor suction inlet Starting point) carbon dioxide still in 32 DEG C, the critical points of 7.4MPa supercriticalities, supercritical carbon dioxide electricity generation system fortune Row state control difficulty is big, it is still necessary to carries out control research.

China《Cement》(2014.No.9)《Utilize CO₂The cement afterheat generation system of power cycle》Describe Russia of the U.S. Last of the twelve Earthly Branches Russia state Akron city Echogen companies are extracted using discarded waste heat and the chamotte cooler stage casing of cement plant preheater discharge Discarded waste heat design apply CO₂Power cycle afterheat generating system.The currently available EPS100 8MW of Echogen companies The waste heat exchanger of heat engine system north America region investment up to 2000~25,000,000 dollars, it is whole far above domestic 8MW double boilers Cover total investment (the discarded waste heat of the discarded waste heat boiler and chamotte cooler of domestic cement plant preheater of afterheat generating system Boiler power generation system gross investment 4000~60,000,000 yuan), and objectively it is difficult in adapt to China's major part cement kiln System discards waste heat supply temperature with the big situation of raw materials and fuel and kiln system fluctuation of operating conditions, and high-performance heat exchanger is supercritical generating system The basis of system engineer applied.Furthermore China's cement production enterprise has popularized the discarded waste heat boiler and clinker for having built up preheater discharge The discarded afterheat boiler electricity-generating system (water working media) that cooler stage casing is extracted, take in the case of the identical output of identical thermal source and tear open Except the system of Low investment changes system with high investment, lack actuality under national conditions.Obviously, existing CO₂Power generation technology It is not appropriate for the cement industry of China's national situation.

In summary, reduce the demand in production process to extraneous energy consumption (electricity, coal), reduce environmental contaminants discharge be must Want.How China cement production enterprise present situation is adapted to, and utilizing for Low investment is a large amount of caused discarded remaining in cement production process Heat, exploitation are adapted to cement kiln flue gas CO₂Trapping is with applying CO₂The change system of generating, realize manufacture of cement energy-saving and emission-reduction and Carbon dioxide discharge-reduction, it is a real pressing problem.

Utility model content

In view of the shortcomings of the prior art, the utility model is necessary that provide one kind realizes carbon dioxide using cement plant waste heat The change system of circulating generation, using the carbon dioxide of trapping as working medium, utilize caused discarded waste heat in the production process of cement plant The change system to be generated electricity for the carbon dioxide recycle of main energy sources, it is easy to utilize caused temperature fluctuation in cement production process Greatly, low, investment is low, operating cost is low for main energy sources and from consuming energy for the big all kinds of discarded waste heats of the temperature difference.

On the one hand, the purpose of this utility model is that provide one kind realizes that carbon dioxide recycle generates electricity using cement plant waste heat Change system, including liquid CO₂Storage tank, it is pumped by device, CO₂Energy storage equipment, flow straightener, turbine/piston type expansion Machine, generator, cooling device and compression set；

Described liquid CO₂Import of the outlet with being pumped by device of storage tank be connected, the device that is pumped by Outlet and CO₂The import of energy storage equipment is connected, the CO₂The outlet of energy storage equipment is connected with the import of flow straightener, described steady The outlet of stream device is connected with the import of turbine/piston expansion engine, the turbine/piston expansion engine and generator shaft Connection, the outlet of the turbine/piston expansion engine is connected with the import of cooling device, the outlet of the cooling device with The import of compression set is connected, the outlet of the compression set respectively with CO₂The import of energy storage equipment, liquid CO₂Storage tank enters Mouth is connected；

The CO₂Energy storage equipment, for by liquid CO₂The low-pressure liquid CO pumped out in storage tank₂Fluid directly absorbs cement life It is close that the discarded waste heat of different temperatures caused by producing line or high temperature heat accumulation of energy are converted into different temperatures, different pressures, different-energy The supercritical CO of degree₂Fluid；

The flow straightener, for by different temperatures, different pressures, different-energy density supercritical CO₂Liquid turns are Isobaric supercritical CO₂Fluid；

The discarded waste heat or high temperature heat are waste heat or radiant heat caused by production-line technique equipment in cement plant.

Further, the purpose of this utility model is that provide one kind realizes that carbon dioxide recycle is sent out using cement plant waste heat The change system of electricity, wherein, 100 DEG C~500 DEG C of the clinker of the discarded waste heat or high temperature heat including grate-cooler discharge is cold But waste heat, 800 DEG C~1500 DEG C of radiant heat in kiln head cover, 300 DEG C~1500 DEG C of radiant heat, rotary kiln in grate-cooler are discarded 850 in 300 DEG C~500 DEG C of trunk high temperature section, the conduction of 150 DEG C~300 DEG C of rotary kiln shell low-temperature zone and radiant heat, tremie pipe DEG C~950 DEG C of radiant heat, 150 DEG C~180 DEG C of discarded waste heat in head row's dust-precipitator, 800 DEG C~1200 DEG C in kiln tail smoke-box Conduction and radiant heat, 80 DEG C~380 DEG C of discarded waste heat and existing aqueous medium Waste Heat Generation in preheater discharge flue At least one of discarded waste heat of 80 DEG C discharged afterwards~170 DEG C etc. the waste heat energy.

Further, the purpose of this utility model is that provide one kind realizes that carbon dioxide recycle is sent out using cement plant waste heat The change system of electricity, wherein, the CO₂Energy storage equipment includes device body, CO₂Fluid accumulating mechanism, suspension and support, the first check Valve, regulating valve, safety valve, the CO₂In the side wall or top plate that fluid accumulating mechanism is fixed in device body by suspension and support, First non-return valve is arranged on outside device body and CO₂The import of fluid accumulating mechanism is connected；The regulating valve and safety Valve is arranged on CO₂The outlet of fluid accumulating mechanism；The CO₂Fluid accumulating mechanism is heat exchanger, and the work in heat exchanger is situated between Matter is CO₂Fluid.

Further, the purpose of this utility model is that provide one kind realizes that carbon dioxide recycle is sent out using cement plant waste heat The change system of electricity, wherein, the heat exchanger can be that heat-resisting box type heat-exchanger, heat-exchangers of the plate type or disc type are hollow Pipe in pipe.

Further, the purpose of this utility model is that provide one kind realizes that carbon dioxide recycle is sent out using cement plant waste heat Electricity change system, wherein, described device body can be kiln head cover, grate-cooler, rotary kiln shell, kiln tail smoke-box, tremie pipe, Electro-heat equipment in head row dust-precipitator, preheater etc. all cement plants.

Further, the purpose of this utility model is that provide one kind realizes that carbon dioxide recycle is sent out using cement plant waste heat The change system of electricity, wherein, the flow straightener includes flow straightener body, water conservancy diversion mixed organization, inlet ductwork and export pipeline；Institute State water conservancy diversion mixed organization to be arranged in flow straightener body, the inlet ductwork and export pipeline are arranged on flow straightener body； The inlet ductwork and CO₂The outlet connection of energy storage equipment；The import of the export pipeline and turbine/piston expansion engine connects Connect；The water conservancy diversion mixed organization includes at least one of helical blade, deflection plate or porous plate.

Further, the purpose of this utility model is that provide one kind realizes that carbon dioxide recycle is sent out using cement plant waste heat The change system of electricity, wherein, the first temperature and pressure inductor, flowmeter, distributor, the second check are provided with the inlet ductwork Valve；The outlet conduit is provided with pressure regulator valve, the second temperature and pressure inductor.The first temperature and pressure inductor, flowmeter, distributor, Pressure regulator valve, the second temperature and pressure inductor are connected with controller.Described device body, regulating valve, safety valve are electrically connected with controller Connect.It is described to be pumped by device, CO₂Energy storage equipment, flow straightener, turbine/piston expansion engine, generator and compression set are equal It is electrically connected with the controller.Control, data analysis, the data processing that controller of the present utility model is used for whole change system are deposited Storage etc..

Further, the purpose of this utility model is that provide one kind realizes that carbon dioxide recycle is sent out using cement plant waste heat The change system of electricity, wherein, the change system also includes regenerator；The outlet of the compression set and the high-pressure spray of regenerator Body import is connected, the high pressure fluid output and CO of the regenerator₂The import of energy storage equipment is connected；

The low-pressure fluid import of the regenerator is connected with the outlet of turbine/piston expansion engine, the regenerator Low pressure fluid output be connected with the import of cooling device.

Further, the purpose of this utility model is that provide one kind realizes that carbon dioxide recycle is sent out using cement plant waste heat The change system of electricity, wherein, the CO₂Energy storage equipment includes CO built in kiln head cover₂CO built in energy storage equipment, grate-cooler₂Accumulation of energy fills Put, kiln shell radiation CO₂Energy storage equipment, kiln hood radiation CO₂CO built in energy storage equipment, kiln tail smoke-box₂Energy storage equipment, preheater CO₂ Energy storage equipment, tremie pipe CO₂Energy storage equipment, head row's dust-precipitator CO₂At least one of devices such as energy storage equipment.

Further, the purpose of this utility model is that provide one kind realizes carbon dioxide recycle using cement plant waste heat The change system of generating, wherein, the outlet for being pumped by device respectively with kiln head cover built in CO₂Energy storage equipment, grate-cooler Built-in CO₂Energy storage equipment, kiln shell radiation CO₂Energy storage equipment, kiln hood radiation CO₂CO built in energy storage equipment, kiln tail smoke-box₂Accumulation of energy Device, preheater CO₂Energy storage equipment, tremie pipe CO₂Energy storage equipment, head row's dust-precipitator CO₂At least one in the devices such as energy storage equipment The import of kind is connected, CO built in the kiln head cover₂CO built in energy storage equipment, grate-cooler₂Energy storage equipment, kiln shell radiation CO₂Store Can device, kiln hood radiation CO₂CO built in energy storage equipment, kiln tail smoke-box₂Energy storage equipment, preheater CO₂Energy storage equipment, tremie pipe CO₂ Energy storage equipment, head row's dust-precipitator CO₂The outlet of at least one of the devices such as energy storage equipment is connected with the import of flow straightener respectively It is logical；

The outlet of the compression set respectively with kiln head cover built in CO₂CO built in energy storage equipment, grate-cooler₂Energy storage equipment, kiln Trunk radiates CO₂Energy storage equipment, kiln hood radiation CO₂CO built in energy storage equipment, kiln tail smoke-box₂Energy storage equipment, preheater CO₂Accumulation of energy Device, tremie pipe CO₂Energy storage equipment, head row's dust-precipitator CO₂The import of at least one of the devices such as energy storage equipment is connected.

Further, the purpose of this utility model is that provide one kind realizes carbon dioxide recycle using cement plant waste heat The change system of generating, wherein, the change system also includes regenerator；The outlet of the compression set and the high pressure of regenerator Fluid inlet is connected, the high pressure fluid output of the regenerator respectively with kiln head cover built in CO₂Built in energy storage equipment, grate-cooler CO₂Energy storage equipment, kiln shell radiation CO₂Energy storage equipment, kiln hood radiation CO₂CO built in energy storage equipment, kiln tail smoke-box₂Energy storage equipment, Preheater CO₂Energy storage equipment, tremie pipe CO₂Energy storage equipment, head row's dust-precipitator CO₂At least one of the devices such as energy storage equipment Import is connected；

The low-pressure fluid import of the regenerator is connected with the outlet of turbine/piston expansion engine, the regenerator Low pressure fluid output be connected with the import of cooling device.

It is further preferred that the purpose of this utility model is that provide one kind realizes that carbon dioxide follows using cement plant waste heat The change system that ring generates electricity, wherein, the CO₂Energy storage equipment includes CO built in kiln tail smoke-box₂Energy storage equipment and head row's dust-precipitator CO₂Energy storage equipment, the outlet for being pumped by device respectively with kiln tail smoke-box built in CO₂The import of energy storage equipment and head row receive Dirt device CO₂The import of energy storage equipment is connected, CO built in the kiln tail smoke-box₂The outlet of energy storage equipment and head row's dust-precipitator CO₂Store The outlet of energy device is connected with the import of flow straightener respectively；

The outlet of the compression set respectively with kiln tail smoke-box built in CO₂The import of energy storage equipment, head row's dust-precipitator CO₂Store The import of energy device, liquid CO₂The import of storage tank is connected.

It is further preferred that the purpose of this utility model is that provide one kind realizes carbon dioxide using cement plant waste heat The change system of circulating generation, wherein, the change system also includes regenerator；The outlet of the compression set and regenerator High-pressure fluid import is connected, the high pressure fluid output of the regenerator respectively with kiln tail smoke-box built in CO₂Energy storage equipment enters Mouth and head row's dust-precipitator CO₂The import of energy storage equipment is connected；

The low-pressure fluid import of the regenerator is connected with the outlet of turbine/piston expansion engine, the regenerator Low pressure fluid output be connected with the import of cooling device.

It is further preferred that the purpose of this utility model is that provide one kind realizes that carbon dioxide follows using cement plant waste heat The change system that ring generates electricity, wherein, the CO₂Energy storage equipment includes CO built in kiln head cover₂Energy storage equipment and kiln shell high temperature section spoke Penetrate CO₂Energy storage equipment, the outlet for being pumped by device respectively with kiln head cover built in CO₂Energy storage equipment and kiln shell high temperature section Radiate CO₂The import of energy storage equipment is connected, CO built in the kiln head cover₂Energy storage equipment and kiln shell high temperature section radiation CO₂Accumulation of energy The outlet of device is connected with the import of flow straightener respectively；

The outlet of the compression set respectively with kiln head cover built in CO₂Energy storage equipment and kiln shell high temperature section radiation CO₂Accumulation of energy The import of device, liquid CO₂The import of storage tank is connected.

It is further preferred that the purpose of this utility model is that provide one kind realizes carbon dioxide using cement plant waste heat The change system of circulating generation, wherein, the change system also includes regenerator；The outlet of the compression set and regenerator High-pressure fluid import is connected, the high pressure fluid output of the regenerator respectively with kiln head cover built in CO₂Energy storage equipment and kiln trunk Body high temperature section radiates CO₂The import of energy storage equipment is connected；

The low-pressure fluid import of the regenerator is connected with the outlet of turbine/piston expansion engine, the regenerator Low pressure fluid output be connected with the import of cooling device.

CO of the present utility model₂Energy storage equipment is simple efficiently, using safety, carbon dioxide effectively can be carried out into hot friendship Change, absorb the high temperature heat in each device.

The CO that the utility model is trapped with emission reduction₂It is working medium liquefied storage in liquid CO₂Storage tank, by being pumped by device By liquid CO₂Liquid CO in storage tank₂Continuous press-in CO₂Energy storage equipment；CO₂Energy storage equipment is with low pressure CO₂Fluid absorbs for working medium What production-line technique equipment continuously generated in cement produced with the dry method production process in cement plant is fluctuation or different temperatures all kinds of useless Abandon waste heat or radiant heat and carry out accumulation of energy, be converted into fluctuation and/or different temperatures, the high pressure of different heat densities it is hot overcritical CO₂After fluid；The hot supercritical CO of high pressure₂Fluid is adjusted to isothermal and isobaric CO through flow straightener₂Fluid stable supplies turbine or work The work done of plug expanding machine drives electrical power generators, through turbine or piston expansion engine work done release can after discharge low pressure CO₂Fluid； Low pressure CO₂Fluid has following processing mode：1) low pressure CO₂Fluid cools down through cooling device, compression set compression, the fluid of compression In regenerator recovery low pressure CO₂Fluid waste heat enters CO₂Recycled in energy storage equipment；Or 2) low pressure CO₂Fluid is through cooling device CO is sent into cooling, compression set compression₂Recycled in energy storage equipment；Or 3) low pressure CO₂Fluid is cooled down through cooling device, compressed Liquid CO is sent into device compression₂Storage tank, it is fed again into CO₂For recycling in energy storage equipment；So as to realize that carbon dioxide recycle is sent out Electricity suppl manufacture of cement is used or power supply network.

Compared with prior art, have the advantages that：

1) change system provided by the utility model that carbon dioxide recycle generating is realized using cement plant waste heat, using water Various discarded waste heats in mud production process are to liquid CO₂Accumulation of energy is carried out, realizes that carbon dioxide recycle generates electricity, being capable of high efficiente callback Thermal energy, there is the higher thermal efficiency, effectively store and using energy more than needed, realize that the flexible modulation of energy utilizes.

2) CO that discarded waste heat and radiant heat provided by the utility model utilize₂Energy storage equipment can effectively utilize manufacture of cement During various different temperatures waste heat and radiant heat, become the supercritical fluid of isobaric isothermal by accumulation of energy, current stabilization, supply To generating, ensure the extensive of the stabilization that generates electricity and energy utilization, can be effectively discarded remaining using substantial amounts of 80 DEG C~300 DEG C low temperature Heat, substantial amounts of high temperature radiation waste heat also can be effectively utilized, realize all kinds of used heat and the radiation effectively utilized in cement production process Heat, reduce the pollution that the strong heat radiation of working environment is brought.

3) main energy sources to be generated electricity using carbon dioxide recycle are a large amount of caused all kinds of not equalities of temperature in cement production process The waste heat of degree, and conveyed using the high-pressure pump of low energy consumption, power consumption needed for " cooling+compression " is low, and 1t carbon dioxide compressions are cold Only 6~the 12Kwh of power consumption needed for lime set, and 1t carbon dioxide can generate electricity up to more than 300Kwh.It can be seen that the utility model carries , the production capacity height low from consuming energy of the change system of confession, operating cost are low；And equipment provided by the utility model is in recovery waste heat When, power consumption is reduced, and carbon emission is also accordingly reduced, and demand of the manufacture of cement to extraneous zero power consumption can be achieved, real beneficial to cement production enterprise The recycling economy target of existing " 401 is negative ".

4) in change system provided by the utility model through turbine/piston expansion engine work done release can after discharge low pressure liquid State CO₂Fluid also needs to reclaim heat energy by regenerator, the power consumption of cooling device cooling is further reduced, by will be filled through overcompression The fluid for putting compression absorbs heat energy in regenerator, further reclaims heat energy, realizes energy-conservation and low energy consumption.

5) CO of Tthe utility model system₂Energy storage equipment is simple in construction, can be set directly at the equipment of manufacture of cement heating On, the fluctuation of operating conditions that various kinds of equipment discards waste heat is big, and supercritical CO is realized by flow straightener₂The control of fluid, meet the system that generates electricity System is to voltage stabilizing CO₂The demand of fluid.Pass through CO₂CO in energy storage equipment₂Fluid directly absorbs heat energy and intense radiation heat energy is realized to remaining The recovery and utilization of heat, the setting of cooling device can be suitably reduced, solve ablation of the high temperature intense radiation heat to production equipment and ask Topic, extend the physical life of production equipment, improve the working environment of equipment, reduce the operation power consumption in cement plant, improve ambient heat Contamination hazard.

6) Tthe utility model system can be greatly decreased in cement production process to caused by environment discard, waste water, used heat and Dust pollution, effectively realize the emission reduction and low-carbon production of manufacture of cement.It is nonflammable and carbon dioxide is nontoxic, density height and thermal capacitance Height, circulating repetition utilization can be reclaimed, the pollution-free and saving energy, job stability is high, service life length, practical, ring Border is friendly.

Brief description of the drawings

Fig. 1 is the structure of the change system that carbon dioxide recycle generating is realized using cement plant waste heat described in embodiment 1 Schematic diagram.

Fig. 2 is CO described in the utility model₂The structural representation of energy storage equipment.

Fig. 3 is the structural representation of flow straightener described in the utility model.

Fig. 4 is the structure of the change system that carbon dioxide recycle generating is realized using cement plant waste heat described in embodiment 2 Schematic diagram.

Fig. 5 is the structure of the change system that carbon dioxide recycle generating is realized using cement plant waste heat described in embodiment 3 Schematic diagram.

Fig. 6 is the structure of the change system that carbon dioxide recycle generating is realized using cement plant waste heat described in embodiment 4 Schematic diagram.

Fig. 7 is the structure of the change system that carbon dioxide recycle generating is realized using cement plant waste heat described in embodiment 5 Schematic diagram.

Embodiment

The utility model is further described with specific embodiment below, but the utility model is not by following embodiments Restriction.Those skilled in the art can use for reference present disclosure, be suitably modified technological parameter realization.In particular, All similar replacements and change are apparent to those skilled in the art, and they are considered as being included in this practicality It is new.Method of the present utility model and application are described by preferred embodiment, and related personnel can substantially not take off Method described herein and application are modified or suitably changed with combining from the utility model content, spirit and scope, To realize and using the utility model technology.

Embodiment 1

As shown in figure 1, the utility model provides a kind of equipment that carbon dioxide recycle generating is realized using cement plant waste heat System, mainly include liquid CO₂Storage tank 1, it is pumped by device 2, CO₂Energy storage equipment 3, flow straightener 4, turbine/piston type expansion Machine 5, generator 6, cooling device 7, compression set 8, described liquid CO₂Import of the outlet of storage tank 1 with being pumped by device 2 It is connected, is pumped by outlet and the CO of device 2₂The import of energy storage equipment 3 is connected, CO₂The outlet of energy storage equipment 3 and current stabilization The import of device 4 is connected, and the outlet of flow straightener 4 is connected with the import of turbine/piston expansion engine 5, turbine/piston type Expanding machine 5 and the axis connection of generator 6, the outlet of turbine/piston expansion engine 5 are connected with the import of cooling device 7, cool down The outlet of device 7 is connected with the import of compression set 8, the outlet of compression set 8 respectively with CO₂The import of energy storage equipment 3, liquid State CO₂The import of storage tank 1 is connected, and compression set 8 compresses and liquefies CO₂It is sent into CO₂Circular energy storage supplies to generate electricity in energy storage equipment 3, or The boil down to of compression set 8 liquefaction CO₂It is sent into liquid CO₂It is used in storage tank 1 for circulation, realizes that carbon dioxide recycle generates electricity and supply water Mud production is used or power supply network.

It is embodied in the CO trapped with emission reduction₂It is working medium liquefied storage in liquid CO₂In storage tank 1, to be pumped by device 2 by liquid CO₂Low-pressure liquid CO in storage tank 1₂Continuous press-in CO₂In energy storage equipment 3, low-pressure liquid CO₂Fluid directly absorbs water The discarded waste heat of different temperatures caused by mud production line or high temperature heat accumulation of energy are converted into different temperatures, different pressures, different energy The supercritical CO of metric density₂Fluid, it is waste heat caused by production-line technique equipment in cement plant to discard waste heat or high temperature heat Or radiant heat, discarding waste heat or high temperature heat includes the discarded waste heat of 100 DEG C~500 DEG C of clinker cooling, the kiln of grate-cooler discharge 800 DEG C~1500 DEG C of radiant heat in head-shield, 300 DEG C~1500 DEG C of radiant heat, rotary kiln shell high temperature section 300 in grate-cooler DEG C~500 DEG C, the conduction of 150 DEG C~300 DEG C of rotary kiln shell low-temperature zone and 850 DEG C~950 DEG C in radiant heat, tremie pipe of spoke Penetrate heat, 150 DEG C~180 DEG C of discarded waste heat in head row's dust-precipitator, 800 DEG C~1200 DEG C of conduction and radiation in kiln tail smoke-box In heat, preheater discharge flue discharge 80 DEG C after 80 DEG C~380 DEG C of discarded waste heat and existing aqueous medium Waste Heat Generation At least one of~170 DEG C of discarded waste heats waste heat energy；

Different temperatures, different pressures, the supercritical CO of different-energy density₂Fluid is converted into equipressure through the regulation of flow straightener 4 Supercritical CO₂Fluid, isobaric supercritical CO₂Fluid stable supplies turbine or the work done of piston expansion engine 5 driving generator 6 is sent out Electricity, through turbine or the work done of piston expansion engine 5 release can after discharge low pressure CO₂Fluid, low pressure CO₂Fluid is cold through cooling device 7 But CO is sent into, the compression of compression set 8₂Circular energy storage in energy storage equipment 3, or low pressure CO₂Fluid cools down through cooling device 7, compresses dress Liquid CO is sent into after putting 8 compressions₂Storage tank 1, is fed again into CO₂Circular energy storage in energy storage equipment 3, realize that carbon dioxide recycle generates electricity Supply manufacture of cement is used or power supply network.

As shown in Fig. 2 the CO₂Energy storage equipment 3 includes device body 31, CO₂Fluid accumulating mechanism 32, suspension and support 33, One non-return valve 34, regulating valve 35, safety valve 36, the CO₂Fluid accumulating mechanism 32 is fixed on device body by suspension and support 33 In side wall or top plate in 31, first non-return valve 34 is arranged on outside device body 31 and CO₂Fluid accumulating mechanism 32 enters Mouth is connected；The regulating valve 35 and safety valve 36 are arranged on CO₂The outlet of fluid accumulating mechanism 32；The CO₂Fluid energy accumulating machine Structure 32 is heat exchanger, and the working media in heat exchanger is CO₂Fluid.By being pumped by device 2 by liquid CO₂In storage tank 1 Liquid CO₂CO is continuously pressed into through the first non-return valve 34₂Fluid accumulating mechanism 32, by heat exchange directly with CO₂For working media Accumulation high temperature heat is absorbed, by low pressure CO₂Liquid turns are the high hot supercritical CO of high pressure of energy density₂Fluid, due to device The working environment of body 31 is different, and it can be used for the waste heat of conversion and radiant heat is also had any different, therefore the high pressure formed is hot super faces Boundary CO₂Fluid is fluctuation, the hot supercritical CO of the high pressure of different temperatures and different heat densities₂Fluid.

As shown in figure 3, the flow straightener 4 includes flow straightener body 41, water conservancy diversion mixed organization 42, inlet ductwork 43 and outlet Pipeline 44；The water conservancy diversion mixed organization 42 is arranged in flow straightener body 41, and the inlet ductwork 43 and export pipeline 44 are all provided with Put on flow straightener body 41；The inlet ductwork 43 and CO₂The outlet connection of energy storage equipment 3；The export pipeline 44 and whirlpool The import connection of turbine/piston expansion engine 5；The first temperature and pressure inductor 431, flowmeter are provided with the inlet ductwork 43 432nd, distributor 433, the second non-return valve 434；The outlet conduit 44 is provided with pressure regulator valve 441, the second temperature and pressure inductor 442； The water conservancy diversion mixed organization 42 includes at least one of helical blade 421, deflection plate 422 or porous plate 423.Fluctuation, no The hot supercritical CO of high pressure of synthermal and different heat densities₂Fluid is through CO₂After the outlet outflow of energy storage equipment 3, into import Pipeline 43, pass through the supercritical CO in the signal piping of the first temperature and pressure inductor 431₂The temperature and pressure of fluid, according to turbine/ The supercritical CO that the generating of piston expansion engine 5 needs₂The temperature and pressure of fluid, pass through the detection flows of flowmeter 432, distributor Various supercritical COs on 433 control pipers₂The flow of fluid so that the supercritical CO into flow straightener body 41₂Fluid passes through After the effect of water conservancy diversion mixed organization 42, equipressure exported in the signal piping of the second temperature and pressure inductor 442 on export pipeline 44 etc. The supercritical CO of temperature₂The temperature and pressure of fluid meets the requirements.

Embodiment 2

As shown in figure 4, the difference of embodiment 2 and embodiment 1 is, in addition to regenerator 9；Turbine/piston type The outlet of expanding machine 5 is connected with the low-pressure fluid import of regenerator 9, low pressure fluid output and the cooling device 7 of regenerator 9 Import is connected, and the outlet of cooling device 7 is connected with the import of compression set 8, the outlet of compression set 8 respectively with regenerator 9 high-pressure fluid import, CO₂The import of energy storage equipment 3, liquid CO₂The import of storage tank 1 is connected.It is swollen through turbine or piston type The swollen work done of machine 5 release can after discharge low pressure CO₂Fluid, low pressure CO₂Fluid is cold through cooling device 7 again after the recovery waste heat of regenerator 9 But liquid CO is sent into, the compression of compression set 8₂For circulation in storage tank 1, or the fluid that compresses of compression set 8 absorbed through regenerator 9 it is remaining Enter CO after heat₂In energy storage equipment 3, realize that carbon dioxide recycle generates electricity.By the recovery waste heat energy loss of regenerator 9 more It is few so that the power consumption of cooling device 7 is lower, reasonable utilization of energy.

Embodiment 3

As shown in figure 5, the difference of embodiment 3 and embodiment 1 is, the CO₂Energy storage equipment 3 is built in kiln head cover CO₂Energy storage equipment 3a and kiln shell high temperature section radiation CO₂Energy storage equipment 3b combination, CO built in kiln head cover₂Energy storage equipment 3a and kiln Trunk high temperature section radiates CO₂Energy storage equipment 3b concrete structure refers to Fig. 4, different according to specific device body, device sheet The structure change of body, but the part in device is constant；Wherein, be pumped by the outlet of device 2 respectively with kiln head cover built in CO₂Energy storage equipment 3a import and kiln shell high temperature section radiation CO₂Energy storage equipment 3b import is connected, CO built in kiln head cover₂Store Energy device 3a outlet and kiln shell high temperature section radiation CO₂Import of the energy storage equipment 3b outlet respectively with flow straightener 4 is connected； The outlet of compression set 8 radiates CO with kiln shell high temperature section respectively₂CO built in energy storage equipment 3b import, kiln head cover₂Energy storage equipment 3a import, liquid CO₂The import of storage tank 1 is connected；Realize that carbon dioxide recycle generating supply manufacture of cement is used or powered Net.

It is embodied in the CO trapped with emission reduction₂It is working medium liquefied storage in liquid CO₂In storage tank 1, to be pumped by device 2 by liquid CO₂Low-pressure liquid CO in storage tank 1₂CO built in continuous press-in kiln head cover₂Energy storage equipment 3a and kiln shell high temperature section spoke Penetrate CO₂In energy storage equipment 3b, low-pressure liquid CO₂Fluid is directly absorbed 100~500 caused by kiln head cover caused by cement producing line DEG C clinker cooling discard waste heat, 300 DEG C~1500 DEG C of radiant heat in kiln head cover, 300 DEG C~500 DEG C of kiln shell high temperature section and The radiant heat that 150 DEG C~300 DEG C of low-temperature zone, obtain 4 kinds of different temperatures, different pressures, the supercritical CO of different-energy density₂Stream Body, the supercritical CO₂Fluid is converted into isobaric supercritical CO through the regulation of flow straightener 4₂Fluid, isobaric supercritical CO₂Fluid stable supplies Generated electricity to turbine or the work done of piston expansion engine 5 driving generator 6, after turbine or the work done of piston expansion engine 5 release energy Discharge low pressure CO₂Fluid, low pressure CO₂Fluid cools down through cooling device 7, the boil down to of compression set 8 liquefaction CO₂It is sent into kiln head cover Put CO₂Energy storage equipment 3a and kiln shell high temperature section radiation CO₂Circular energy storage in energy storage equipment 3b, or low pressure CO₂Fluid fills through cooling Liquid CO is sent into after putting 7 coolings, the compression of compression set 8₂Storage tank 1, it is fed again into CO built in kiln head cover₂Energy storage equipment 3a and kiln trunk Body high temperature section radiates CO₂Circular energy storage in energy storage equipment 3b, realize that carbon dioxide recycle generating supply manufacture of cement is used or supplied Power network.

CO built in the kiln head cover₂Energy storage equipment 3a includes device body one, CO₂Fluid accumulating mechanism one, suspension and support one, Non-return valve one, regulating valve one, safety valve one, the CO₂Fluid accumulating mechanism one is fixed in device body by suspension and support In side wall or top plate, the non-return valve one is arranged on outside device body one and CO₂The import of fluid accumulating mechanism one is connected；Institute State regulating valve one and safety valve one is arranged on CO₂The outlet of fluid accumulating mechanism one；The CO₂Fluid accumulating mechanism one is handed over for heat Parallel operation, the working media in heat exchanger is CO₂Fluid.By being pumped by device 2 by liquid CO₂Liquid CO in storage tank 1₂ CO is continuously pressed into through non-return valve one₂Fluid accumulating mechanism one, by heat exchange directly with CO₂Accumulation high temperature is absorbed for working media Heat energy, by low pressure CO₂Liquid turns are the high hot supercritical CO of high pressure of energy density₂Fluid, due to the building ring of device body one Border is different, and it can be used for the waste heat of conversion and radiant heat is also had any different, therefore the hot supercritical CO of high pressure formed₂Fluid is ripple The hot supercritical CO of dynamic, different temperatures and different heat densities high pressure₂Fluid.

The kiln shell high temperature section radiates CO₂Energy storage equipment 3b includes device body two, CO₂Fluid accumulating mechanism two, branch are hung Frame two, non-return valve two, regulating valve two, safety valve two, the CO₂Fluid accumulating mechanism two is fixed on device sheet by suspension and support two In side wall or top plate in body two, the non-return valve two is arranged on outside device body two and CO₂The import of fluid accumulating mechanism two It is connected；The regulating valve two and safety valve two are arranged on CO₂The outlet of fluid accumulating mechanism two；The CO₂Fluid accumulating mechanism Two be heat exchanger, and the working media in heat exchanger is CO₂Fluid.By being pumped by device 2 by liquid CO₂In storage tank 1 Liquid CO₂CO is continuously pressed into through non-return valve two₂Fluid accumulating mechanism two, by heat exchange directly with CO₂Absorb and store for working media Collect high temperature heat, by low pressure CO₂Liquid turns are the high hot supercritical CO of high pressure of energy density₂Fluid, due to device body two Working environment is different, and it can be used for the waste heat of conversion and radiant heat is also had any different, therefore the hot supercritical CO of high pressure formed₂Stream Body is fluctuation, the hot supercritical CO of the high pressure of different temperatures and different heat densities₂Fluid.

Fluctuation, the different temperatures and different heat densities hot supercritical CO of high pressure₂Fluid is through CO built in kiln head cover₂Store Can device 3a and kiln shell high temperature section radiation CO₂After energy storage equipment 3b outlet outflow, into inlet ductwork 43, pass through the first temperature Press the supercritical CO in the signal piping of inductor 431₂The temperature and pressure of fluid, generated electricity according to turbine/piston expansion engine 5 The supercritical CO needed₂The temperature and pressure of fluid, it is various on the control piper of distributor 433 by the detection flows of flowmeter 432 Supercritical CO₂The flow of fluid so that the supercritical CO into flow straightener body 41₂Fluid is by water conservancy diversion mixed organization 42 After effect, the supercritical CO of the isobaric isothermal exported in the signal piping of the second temperature and pressure inductor 442 on export pipeline 44₂Fluid Temperature and pressure meet the requirements.

Embodiment 4

As shown in fig. 6, the difference of embodiment 4 and embodiment 1 is, the CO₂Energy storage equipment 3 is built in kiln head cover CO₂Energy storage equipment 3a and kiln shell high temperature section radiation CO₂Energy storage equipment 3b combination, in addition to regenerator 9；It is pumped by device 2 Outlet respectively with kiln head cover built in CO₂Energy storage equipment 3a and kiln shell high temperature section radiation CO₂Energy storage equipment 3b import is connected It is logical, CO built in kiln head cover₂Energy storage equipment 3a and kiln shell high temperature section radiation CO₂Energy storage equipment 3b outlet respectively with flow straightener 4 Import is connected, and the outlet of flow straightener 4 is connected with the import of turbine/piston expansion engine 5, turbine/piston type expansion Machine 5 and the axis connection of generator 6, the outlet of turbine/piston expansion engine 5 are connected with the low-pressure fluid import of regenerator 9, return The low pressure fluid output of hot device 9 is connected with the import of cooling device 7, the outlet of cooling device 7 and the import phase of compression set 8 Connection, compression set 8 export the high-pressure fluid import with regenerator 9, liquid CO respectively₂The import of storage tank 1 is connected, regenerator CO built in 9 high pressure fluid output and kiln head cover₂Energy storage equipment 3a and kiln shell high temperature section radiation CO₂Energy storage equipment 3b import It is connected；Liquid CO₂The outlet of storage tank 1 connects with being pumped by device 2 and is pumped into CO built in kiln head cover₂Energy storage equipment 3a and kiln trunk Body high temperature section radiates CO₂Energy storage equipment 3b.

CO built in the kiln head cover₂Energy storage equipment 3a and kiln shell high temperature section radiation CO₂Energy storage equipment 3b structure is as implemented Described in example 3.By being pumped by device 2 by liquid CO₂Liquid CO in storage tank 1₂CO is continuously pressed into through non-return valve₂Fluid accumulation of energy Mechanism, by heat exchange directly with CO₂Accumulation high temperature heat is absorbed for working media, by low pressure CO₂Liquid turns are energy density The hot supercritical CO of high high pressure₂Fluid, because device body working environment is different, it can be used for the waste heat and radiant heat of conversion Also have any different, therefore the hot supercritical CO of high pressure formed₂Fluid is the high pressure of fluctuation, different temperatures and different heat densities Hot supercritical CO₂Fluid.

The said system course of work is：The CO trapped with emission reduction₂It is working medium liquefied storage in liquid CO₂In storage tank 1, use CO built in kiln head cover₂Energy storage equipment 3a and kiln shell high temperature section radiation CO₂Energy storage equipment 3b while accumulation heat energy, to be pumped by Device 2 is by liquid CO₂Liquid CO in storage tank 1₂Continuous high pressure is sent into CO built in kiln head cover₂Energy storage equipment 3a and kiln shell high temperature Section radiation CO₂In energy storage equipment 3b, low-pressure liquid CO₂Fluid directly absorbs 100 caused by kiln head cover caused by cement producing line~ 300 DEG C~1500 DEG C of radiant heat, kiln shell high temperature section 300 DEG C~500 in the discarded waste heat of 500 DEG C of clinker cooling, kiln head cover DEG C and 150 DEG C~300 DEG C of low-temperature zone radiant heat, obtain 4 kinds of different temperatures, different pressures, different-energy density it is overcritical CO₂Fluid, the supercritical CO₂Fluid is converted into isobaric supercritical CO through the regulation of flow straightener 4₂Fluid, isobaric supercritical CO₂Fluid Stable supplying turbine or the work done of piston expansion engine 5 driving generator 6 generate electricity, through turbine or the work done of piston expansion engine 5 Release can after discharge low pressure CO₂Fluid, low pressure CO₂Fluid cools down through cooling device 7 again after the recovery waste heat of regenerator 9, compression set CO built in kiln tail smoke-box is sent into 8 compressions₂Energy storage equipment 3d and head row's dust-precipitator CO₂Circular energy storage in energy storage equipment 3c, or it is sent into liquid State CO₂For circulation in storage tank 1, realize that carbon dioxide recycle generates electricity.It is less by the recovery waste heat energy loss of regenerator 9.

Embodiment 5

As shown in fig. 7, the difference of embodiment 5 and embodiment 1 is, the CO₂Energy storage equipment 3 is in kiln tail smoke-box Put CO₂Energy storage equipment 3d and head row's dust-precipitator CO₂Energy storage equipment 3c combination, in addition to regenerator 9；It is pumped by going out for device 2 Mouth respectively with kiln tail smoke-box built in CO₂Energy storage equipment 3d import and head row's dust-precipitator CO₂Energy storage equipment 3c import is connected, CO built in kiln tail smoke-box₂Energy storage equipment 3d outlet and head row's dust-precipitator CO₂Energy storage equipment 3c outlet respectively with flow straightener 4 Import is connected, and the outlet of flow straightener 4 is connected with the import of turbine/piston expansion engine 5, turbine/piston type expansion Machine 5 and the axis connection of generator 6, the outlet of turbine/piston expansion engine 5 are connected with the low-pressure fluid import of regenerator 9, return The low pressure fluid output of hot device 9 is connected with the import of cooling device 7, the outlet of cooling device 7 and the import phase of compression set 8 Connection, compression set 8 export the high-pressure fluid import with regenerator 9, liquid CO respectively₂The import of storage tank 1 is connected, backheat The high pressure fluid output of device 9 and CO built in kiln tail smoke-box₂Energy storage equipment 3d import and head row's dust-precipitator CO₂Energy storage equipment 3c's Import is connected；

CO built in the kiln tail smoke-box₂Energy storage equipment 3d and head row's dust-precipitator CO₂Energy storage equipment 3c structural reference CO₂Store The structure of energy device 3.By being pumped by device 2 by liquid CO₂Liquid CO in storage tank 1₂CO is continuously pressed into through non-return valve₂Stream Body accumulating mechanism, by heat exchange directly with CO₂Accumulation high temperature heat is absorbed for working media, by low pressure CO₂Liquid turns are energy The hot supercritical CO of the high high pressure of metric density₂Fluid, because device body working environment is different, its can be used for the waste heat of conversion and Radiant heat is also had any different, therefore the hot supercritical CO of high pressure formed₂Fluid is fluctuation, different temperatures and different heat densities The hot supercritical CO of high pressure₂Fluid.

The said system course of work is：The CO trapped with emission reduction₂It is working medium liquefied storage in liquid CO₂In storage tank 1, use CO built in kiln tail smoke-box₂Energy storage equipment 3d and head row's dust-precipitator CO₂Energy storage equipment 3c while accumulation heat energy, to be pumped by device 2 By liquid CO₂Liquid CO in storage tank 1₂Continuous high pressure is sent into CO built in kiln tail smoke-box₂Energy storage equipment 3d and head row's dust-precipitator CO₂ In energy storage equipment 3c, arranged using 850 DEG C~1200 DEG C of the heat energy and head fluctuated in kiln tail smoke-box in cement produced with the dry method production process Discarded 100 DEG C~300 DEG C discarded waste heat is the energy to liquid CO₂Direct accumulation of energy, CO built in kiln tail smoke-box₂Energy storage equipment 3d and Head row's dust-precipitator CO₂Liquid CO in energy storage equipment 3c₂Directly absorb high temperature heat and be converted into two kinds of different temperatures and energy density The hot CO of high pressure₂The hot CO of high pressure of fluid, two kinds of different temperatures and different-energy density₂Fluid is adjusted to through flow straightener 4 The isobaric hot fluid stable supplying turbine of temperature or the work done of piston expansion engine 5 driving generator 6 generate electricity, through turbine or piston type The work done of expanding machine 5 release can after discharge low pressure CO₂Fluid, low pressure CO₂Fluid is cold through cooling device 7 again after the recovery waste heat of regenerator 9 But, the compression of compression set 8, which is sent into after regenerator 9 absorbs energy, enters CO built in kiln tail smoke-box₂Energy storage equipment 3d and head row are gathered dust Device CO₂Circular energy storage in energy storage equipment 3c, or compressed fluid are sent directly into liquid CO₂For circulation in storage tank 1, dioxy is realized Change carbon cycle to generate electricity.It is less by the recovery waste heat energy loss of regenerator 9.

Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims (10)

1. a kind of change system that carbon dioxide recycle generating is realized using cement plant waste heat, it is characterised in that including liquid CO₂ Storage tank, it is pumped by device, CO₂Energy storage equipment, flow straightener, turbine/piston expansion engine, generator, cooling device and pressure Compression apparatus；

Described liquid CO₂Import of the outlet with being pumped by device of storage tank is connected, the outlet for being pumped by device and CO₂The import of energy storage equipment is connected, the CO₂The outlet of energy storage equipment is connected with the import of flow straightener, the flow straightener Outlet is connected with the import of turbine/piston expansion engine, and the turbine/piston expansion engine is connected with generator shaft, The outlet of the turbine/piston expansion engine is connected with the import of cooling device, the outlet and compression of the cooling device The import of device is connected, the outlet of the compression set respectively with CO₂The import of energy storage equipment, liquid CO₂The import phase of storage tank Connection；

The CO₂Energy storage equipment, for by liquid CO₂The low-pressure liquid CO pumped out in storage tank₂Fluid directly absorbs cement producing line The discarded waste heat of caused different temperatures or high temperature heat accumulation of energy are converted into different temperatures, different pressures, different-energy density Supercritical CO₂Fluid；

The flow straightener, for by different temperatures, different pressures, different-energy density supercritical CO₂Liquid turns are isobaric super Critical CO₂Fluid；

The discarded waste heat or high temperature heat are waste heat or radiant heat caused by production-line technique equipment in cement plant.

2. change system according to claim 1, it is characterised in that the discarded waste heat or high temperature heat include grate-cooler 100~500 DEG C of clinker cooling of discharge discards waste heat, 800 DEG C~1500 DEG C of radiant heat in kiln head cover, 300 in grate-cooler DEG C~1500 DEG C of radiant heat, 300 DEG C~500 DEG C of rotary kiln shell high temperature section, 150 DEG C~300 DEG C of rotary kiln shell low-temperature zone Conduction and radiant heat, 850 DEG C~950 DEG C of radiant heat in tremie pipe, 150 DEG C~180 DEG C discarded remaining in head row's dust-precipitator Heat, 800 DEG C~1200 DEG C of conduction and 80 DEG C~380 DEG C discarded remaining in radiant heat, preheater discharge flue in kiln tail smoke-box At least one of the discarded waste heat of 80 DEG C discharged after the hot and existing aqueous medium Waste Heat Generation~170 DEG C waste heat energy.

3. change system according to claim 1, it is characterised in that the CO₂Energy storage equipment includes device body, CO₂Stream Body accumulating mechanism, suspension and support, the first non-return valve, regulating valve, safety valve, the CO₂Fluid accumulating mechanism is fixed by suspension and support In side wall or top plate in device body, first non-return valve is arranged on outside device body and CO₂Fluid accumulating mechanism Import is connected；The regulating valve and safety valve are arranged on CO₂The outlet of fluid accumulating mechanism；The CO₂Fluid accumulating mechanism is Heat exchanger, the working media in heat exchanger is CO₂Fluid.

4. change system according to claim 3, it is characterised in that the heat exchanger includes heat-resisting box heat exchange Device, heat-exchangers of the plate type or the hollow pipe in pipe of disc type；Described device body include kiln head cover, grate-cooler, rotary kiln shell, Kiln tail smoke-box, preheater, tremie pipe, head row's dust-precipitator.

5. change system according to claim 1, it is characterised in that the flow straightener includes flow straightener body, water conservancy diversion mixes Close mechanism, inlet ductwork and export pipeline；The water conservancy diversion mixed organization is arranged in flow straightener body, the inlet ductwork and is gone out Mouth pipeline is arranged on flow straightener body；The inlet ductwork and CO₂The outlet connection of energy storage equipment；The export pipeline with The import connection of turbine/piston expansion engine；The water conservancy diversion mixed organization is included in helical blade, deflection plate or porous plate It is at least one.

6. change system according to claim 5, it is characterised in that from CO in the inlet ductwork₂The outlet of energy storage equipment The first temperature and pressure inductor, flowmeter, distributor, the second non-return valve are disposed with to flow straightener body import；The outlet The import that road is exported to turbine/piston expansion engine from flow straightener body is disposed with pressure regulator valve, the second temperature and pressure inductor.

7. change system according to claim 1, it is characterised in that the change system also includes regenerator；The pressure The outlet of compression apparatus is connected with the high-pressure fluid import of regenerator, the high pressure fluid output and CO of the regenerator₂Accumulation of energy fills The import put is connected；

The low-pressure fluid import of the regenerator is connected with the outlet of turbine/piston expansion engine, the regenerator it is low Pressure fluid issuing is connected with the import of cooling device.

8. change system according to claim 1, it is characterised in that the CO₂Energy storage equipment includes CO built in kiln head cover₂ CO built in energy storage equipment, grate-cooler₂Energy storage equipment, kiln shell radiation CO₂Energy storage equipment, kiln hood radiation CO₂Energy storage equipment, kiln tail CO built in smoke-box₂Energy storage equipment, preheater CO₂Energy storage equipment, tremie pipe CO₂Energy storage equipment, head row's dust-precipitator CO₂Energy storage equipment At least one of.

9. change system according to claim 8, it is characterised in that the outlet for being pumped by device respectively with kiln hood CO built in cover₂CO built in energy storage equipment, grate-cooler₂Energy storage equipment, kiln shell radiation CO₂Energy storage equipment, kiln hood radiation CO₂Accumulation of energy CO built in device, kiln tail smoke-box₂Energy storage equipment, preheater CO₂Energy storage equipment, tremie pipe CO₂Energy storage equipment, head row's dust-precipitator CO₂ The import of at least one of energy storage equipment is connected, CO built in the kiln head cover₂CO built in energy storage equipment, grate-cooler₂Accumulation of energy fills Put, kiln shell radiation CO₂Energy storage equipment, kiln hood radiation CO₂CO built in energy storage equipment, kiln tail smoke-box₂Energy storage equipment, preheater CO₂ Energy storage equipment, tremie pipe CO₂Energy storage equipment, head row's dust-precipitator CO₂At least one of energy storage equipment outlet respectively with flow straightener Import is connected；

The outlet of the compression set respectively with kiln head cover built in CO₂CO built in energy storage equipment, grate-cooler₂Energy storage equipment, kiln shell Radiate CO₂Energy storage equipment, kiln hood radiation CO₂CO built in energy storage equipment, kiln tail smoke-box₂Energy storage equipment, preheater CO₂Energy storage equipment, Tremie pipe CO₂Energy storage equipment, head row's dust-precipitator CO₂The import of at least one of energy storage equipment is connected.

10. the change system according to claim 7 or 8, it is characterised in that the change system also includes regenerator；Institute The outlet of compression set is stated with the high-pressure fluid import of regenerator to be connected, the high pressure fluid output of the regenerator respectively with kiln CO built in head-shield₂CO built in energy storage equipment, grate-cooler₂Energy storage equipment, kiln shell radiation CO₂Energy storage equipment, kiln hood radiation CO₂Store CO built in energy device, kiln tail smoke-box₂Energy storage equipment, preheater CO₂Energy storage equipment, tremie pipe CO₂Energy storage equipment, head row's dust-precipitator CO₂The import of at least one of energy storage equipment is connected；

The low-pressure fluid import of the regenerator is connected with the outlet of turbine/piston expansion engine, the regenerator it is low Pressure fluid issuing is connected with the import of cooling device.