The complex teploelektrostanciya and processing waste

 

(57) Abstract:

The invention relates to the production of heat and electricity and waste treatment production based on the use of high-temperature hydrothermal systems, in particular to the use of steam-water mixtures from geothermal wells. The complex teploelektrostanciya and processing waste contains operational geothermal borehole heat exchanger, secondary circuit of the heat carrier, turbine generator, condenser steam pump and treatment system waste. Introduced injection and observation wells, the pump is dosing, the output wells associated with turbosupercharger, which is connected to the generator, one of the outputs of turbocharoer connected to the input of the heat exchanger, as a secondary coolant which selected water consumed, the heat exchanger contains the output of the consumed water and thermal water, which through the first metering pump connected to the input of injection wells, the second output of turbocharoer associated with mesh separator, the output of which is connected with the turbine generator, in series with the turbine generator is the capacitor pair, vyhodka radioactive waste connected via a second metering pump to the input of injection wells, observation wells are control devices for injection wells and equipment control metering pumps, the distance between operational wells and injection wells satisfies the condition:EN/RVL2, where REN- the distance between injection wells and development wells, RVLis the radius of the zone of influence of the wells. Technical result - increase the utilization of geothermal wells, extension of range of the processed waste. 1 Il.

The invention relates to the field of heat and electric energy and waste production based on the use of high-temperature hydrothermal systems, in particular to the use of steam-water mixtures from geothermal wells.

Known complex teploelektrostanciya containing operational borehole heat exchanger secondary circuit of a heat supply, turbine generator, system reset geothermal fluid (E. Berman. Geothermal energy. - M. : Mir, 1978, S. 299, Fig. 6.16, the circuit with the secondary coolant).

N is aetsa isobutane, due to its heat gain power, while still hot geothermal water shed, partially using heat.

Known complex teploelektrostanciya and processing of waste containing operational geothermal borehole heat exchanger secondary circuit of the heat carrier, turbine generator, condenser steam pump and treatment system waste (see I. M. Courtyards. The inner heat of the earth. - M.: Nauka, Geothermal station with heat exchanger, S. 110, Fig. 27). This complex is used as a prototype.

The prototype has the disadvantage of reducing the temperature and elastic parameters of steam before the turbine, reduced efficiency, a limited number of processed waste.

This invention eliminates these drawbacks.

The technical result of the present invention is to increase the utilization of geothermal wells, extension of range of the processed waste, improvement of ecological characteristics of the deposits hydrothermal system.

The technical result is achieved by the fact that in a complex teploelektrostanciya and processing of waste containing operating geothermal wells is the processing of waste introduced injection and observation wells, the pump is dosing, the output wells associated with turbosupercharger, which is connected to the generator, one of the outputs of turbocharoer connected to the input of the heat exchanger, as a secondary coolant which selected water consumed, the heat exchanger contains the output of the consumed water and thermal water, which through the first metering pump connected to the input of injection wells, the second output of turbocharoer associated with mesh separator, the output of which is connected with the turbine generator, in series with the turbine generator is the capacitor pair, the output of which is connected to the input of the first dosing pump, the waste processing system includes a container of liquid radioactive waste, connected via a second metering pump with the input of the injection wells, observation wells are control devices for injection wells and equipment control metering pumps, the distance between operational wells and injection wells satisfies the condition

< / BR>
REN- the distance between injection wells and development wells;

R

The invention is illustrated in the drawing, 1 is a production well, 2 - injection wells, 3 - surveillance, 4 - turbocharoer, 5 - generator turbocharoer, 6 - mesh separator, 7 - turbo-generator 8 generator 9 - capacitor pair, 10 - first metering pump (coolant), 11 - secondary coolant (water heating), 12 - heat exchanger 13 to the consumer (e.g. Central heating), 14 container with liquid radioactive waste, 15 - second dosing pump.

The device operates as follows.

Operational geothermal well 1 is located in geological formations of high-temperature hydrothermal systems with a temperature range from 100oC and above. Hydrothermal systems are composed of ultrabasic, basic and acidic aluminosilicate igneous rocks containing magnesium. From wells 1 steam and the steam-water mixture is coming to turbocharoer 4, in which there is a separation of the mixture of water and steam, and the generator 5 is already beginning to produce electricity. Separated vapor comes in a mesh separator 6, which completely dried is supplied to the turbine 7 (Jenster pair 9, whence the liquid flows through the first metering pump 10 to the injection well 2, ie, the reverse injection.

At the same time, the separated liquid from the turbo-generator 4 is directed into the heat exchanger 12, through which pass the secondary carrier 11, in this case water for the Central heating system, which is heated, is supplied to consumers 13. The presence of geothermal water and drainage structure in geological formations of high-temperature systems allows the use of an injection well 2 as for reinjection (reverse injection of thermal waters), and for the disposal of liquid radioactive waste. From the container 14 through the second metering pump 15 liquid radioactive waste is fed into the injection well 2. Management as a first metering pump 10 and second pump 15 is on the team Supervisory and control equipment located in the observation well 3. When joint injection in the subsurface hydrothermal systems of liquid radioactive waste and spent coolant is even greater dilution of radioactive waste, and most importantly - their acidification of the steam condensate from the discharged water, which reduces verastone water is pumped into injection well 2, where in the first stage are formed gels of silicic acid and partial precipitation of the sulphides of heavy metals. These processes are characteristic for the area of hydrothermal systems with the formation of acidic and slightly acidic SO4-Cl-Na and then neutral Cl-Na-K hydrothermal containing soluble salts of heavy metals type MeCl, MeSO4and Me+SiO2.

In the second stage, is the deposition of heavy metals from aqueous oxides in colloidal state when coagulation in the form of amorphous silica (Me+SiO2). The number and status of radioactive waste is controlled devices monitoring wells 3. If necessary, include the first metering pump 10, or the second metering pump 15, or both simultaneously.

At the third stage are formed and deposited oxides and carbonates of heavy metals (MeCO3, MeO3Me+SiO2, CaCO3). High concentration of magnesium in the groundwater of marine Genesis promotes the formation of insoluble silica.

The experiments showed that the silica and silicates absorb 100% uranyl, 50-70% of the cesium and strontium.

Injected into the reservoir solution, a mixture of discharged after separation of water, konchennyh in the reservoir, and minerals rocks that form insoluble compounds. This makes safe removal of produced water even near the site of injection wells 2. However, in order to guarantee safe removal of steam-water mixture from the production well 1 production well 1 and the injection well 2 offer in accordance with condition

< / BR>
where REN- the distance between injection wells and development wells;

RVLis the radius of the zone of influence of the wells,

and the observation well is located in the zone of influence of the injection well.

Observation well 3 are placed in the zone of influence of the injection well 2. Current practice shows that the radius of influence of the wells is from 0.3 to 1.0 km, depending on the filtration properties of water enclosing rocks of the field.

The complex teploelektrostanciya and processing of waste containing operational geothermal borehole heat exchanger, secondary circuit of the heat carrier, turbine generator, the condenser, the vapor pump and the waste processing system, characterized in that it introduced the injection and observation wells, pump the torus, one of the outputs of turbocharoer connected to the input of the heat exchanger, as a secondary coolant which selected water consumed, the heat exchanger contains the output of the consumed water and thermal water, which through the first metering pump is connected to the input of the injection wells, the second output of turbocharoer associated with mesh separator, the output of which is connected with the turbine generator, in series with the turbine generator is the capacitor pair, the output of which is connected to the input of the first dosing pump, the waste processing system includes a container of liquid radioactive waste, which is connected via a second metering pump to the input of the injection well, in the observation well located control devices for injection wells and equipment control metering pumps, the distance between operational wells and injection wells satisfies the condition

< / BR>
where REN- the distance between injection wells and development wells;

RVLis the radius of the zone of influence of the wells,

and the observation well is located in the zone of influence of the injection wells.

 

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