Multiple Inlet Nozzle Type Supersonic Condensation Separation Device

Abstract

The invention discloses an ultrasonic condensing and separating device with multiple air inlet nozzles, which is mainly applied in the field of gas separation. Multiple air inlet nozzles are uniformly arranged in an air inlet cavity for making gas tangentially enter in a flow channel; the radius of the section of a contraction flow channel is reduced gradually, so that the rotational flow is enhanced according to the angular momentum conservation law, and huge centrifugal force is generated; a central body is arranged in the center of the flow channel, and constructs an annular contraction-expansion spray pipe with a variable sectional area together with a contraction section and a straight pipe section; a subsonic contraction flow channel, a throat part and a supersonic rotational flow separation flow channel are formed; after gas is accelerated to an ultrasonic speed, and low temperature and low pressure are formed, condensable components are condensed; at an ultrasonic rotational flow separation section, rotational flow separation of gas and liquid is realized by using huge centrifugal force; and the liquid enters a liquid accumulating cavity, and dry gas is collected in the center of the flow channel, enters a diffuser for returning pressure, and flows out. The device has the advantages of simple structure, no movable component, high processing accuracy, small occupied space, no need of adding any chemical medicament and support of unmanned operation, and is particularly suitable for use on offshore platforms.

Description

Technical field: [0001] The invention relates to a supersonic low-temperature condensation and cyclone separation technology of multi-component mixed gas, in particular to a multi-inlet nozzle type supersonic condensation separation device. Background technique: [0002] With the rapid development of social economy, the world economy is increasingly dependent on energy. Especially in my country, fossil energy still occupies a large proportion of primary energy consumption. Compared with coal and petroleum, natural gas has the advantages of high calorific value, cleanliness, safety and convenience, and has broad development prospects. However, natural gas extracted from imports is often saturated with water vapor and contains some heavy hydrocarbon components. In order to meet the requirements of natural gas export and use, it is necessary to separate water vapor and heavy hydrocarbon components. However, traditional natural gas separation processes, such as cooling, absorpt...

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Problems solved by technology

[0005] There are two main core technologies of the supersonic cyclone separator: one is to install the supersonic wing in the supersonic section behind the nozzle to generate swirling flow, but since the speed conversion occurs under supersonic conditions, shock waves are easily generated behind the supersonic wing , destroys the low temperature and low pressure environment, is not conducive to the growth of droplets, and reduces the separation efficiency of the supersonic separator. Representative patents mainly include foreign US6513345B1, US6524368B2, US3773825B2, US6962199B1, US7261766B2, US7318849B2, US7494535B2, WO2003 / 092850A1 / 02007 and domestic ZL200410074338.8, etc.; the other is to install the swirl device at the inlet of the nozzle, so that the gas enters the nozzle in the form of swirl to expand and cool down. The main patents are foreign US7357825B2, US2008 / 0196581A1, US2010 / 0147021A1、EP1131588B1、US6372019B1、US2010 / 0147023A1和国内的ZL200810011258.6、ZL200910023458.8及申请号200910024347.9、200910081813.7、200910093744.1、201010597341.3等,不足之处是旋流装置的旋流能力比超声速翼要弱,降低 The separation effect of supersonic separator

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