SU914903A1 - Unit for producing heat and carbon dioxide - Google Patents

Description

The invention relates to refrigeration and heating equipment, namely, installations for the integrated production of heat in solid carbon dioxide.

Known installation for the production of heat and carbon dioxide, containing a gas circuit and installed therein a supercharger, a heat exchanger, a compressor, a fuel combustion chamber, a gas turbine placed on the same shaft as the compressor, an economizer, a dehumidifier, a regenerative heat exchanger with forward and reverse flow lines, a detander, placed on the same shaft with a supercharger and an electric generator, and a solid carbon dioxide separator (13.

The disadvantages of the known installations are the low yield of carbon dioxide due to the low degree of expansion of gases in the expander and low operational reliability due to significant contributions from the rotor blades of the expander.

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The purpose of the invention is to increase the yield | solid carbon dioxide and increase ex- reliability.

This goal is achieved by the fact that the expander and separator are made multi-step and each stage of the separator is installed after the corresponding stage of the expander, while the return flow line after the regenerative heat exchanger is connected via shut-off Organs to the compressor inlet and to atmospheres® ·

The drawing schematically shows the proposed installation.

The installation contains a supercharger 1,

¹³ = heat exchanger 2, a compressor 3, combustor 4, fuel, gas turbine 5, economizer 6 dehumidifier 7, heat exchanger 8 with the regenerative whether _Λ niyami 9 10 n respective direct

and reverse flow, first stage 11

expander, second stage 12 expander,

first stage 13 separator solid

carbon dioxide, the second stage 14 specified3 9149С

separator, valves 15 and 16, and an electric generator 17 placed on the same shaft 18 with a supercharger 1 and steps 11 and 12 of the expander.

The installation works as follows.

Outside air and part or all of the reverse gas flow is sucked by the blower 1 and fed through a heat exchanger 2, in which water is heated, into (about compressor 3, from where it is fed under elevated pressure into the combustion chamber 4. High temperature and pressure gases produced during combustion served in a gas turbine 5, 15 in which it expands to produce the mechanical work used to rotate the compressor 3. Partially cooled gases enter an economizer 6, in which they heat the water coming from the heat exchange ika 2 and directed to the hot water supply. Even cooler gases are released from condensed moisture in the dehumidifier 7, after which 25 lines 9 of the regenerative heat exchanger 8 are sent, where they are cooled to a low temperature by reverse flow of gas flowing through line 10. Expanding in the first stage 11 expander gases more zhdayutsya ₃₀ to cool and reduce its temperature to an appropriate crystallization temperature of carbon dioxide at the place having a partial pressure of carbon dioxide in the gas mixture. The resulting crystals _ss solid carbon dioxide is separated in the first stage 13 of the separator. In the second stage 12 of the expander gases expand to a lower pressure and solid carbon dioxide crystals fall out of them, which are separated. In the second stage 14 of the separator. The number of stages of the expander and the separator is chosen from the conditions of economic feasibility of production of a given

3 4

amounts of solid carbon dioxide. If from the gas circuit it is necessary to dump a certain amount of gases into the atmosphere, then the valve 15 opens.

The economic efficiency of the invention is expressed in increasing the production of solid carbon dioxide at the optimal stages of expansion of the gas flow in certain stages of the expander and in reducing the cost of repairs due to less wear on the flow path of these stages.

Claims (1)

Claim Installation for the production of heat and carbon dioxide, containing a gas circuit and installed in it a supercharger, heat exchanger, compressor, chamber, combustion, gas turbine, located on the same shaft with the compressor, economizer, dehumidifier, regenerative heat exchanger with lines of forward and reverse flows, detander, placed on the same shaft with a supercharger and an electric generator, and a solid carbon dioxide separator, characterized in that, in order to increase the yield of solid carbon dioxide and operational reliability, the expander and separator Torr performed multistage n each stage separator installed after the appropriate stage of the expander, wherein the return flow line after the regenerative heat exchanger is connected via shut-off elements to the input of the compressor and to the atmosphere.