CN209371631U - A kind of liquid CO 2 purification device - Google Patents

Abstract

The utility model discloses a kind of liquid CO 2 purification devices, including vaporizer, desulfurization bed, drying bed, adsorbent bed, supercharger and flash tank, the liquid CO 2 enters vaporizer cold side, the vaporizer cold side outlet port connects desulfurization bed entrance, the desulfurization bed outlet connection drying bed entrance, the drying bed outlet connection adsorbent bed entrance, the adsorbent bed outlet connection supercharger entrance, the supercharger outlet connection vaporizer hot side entrance, the vaporizer hot side outlet connects flash tank entrance, flash drum overhead outlet emptying.The liquid CO 2 purification device, the process of desulfurization, drying, absorption is carried out in the environment of low temperature, considerably increase the effect of purification, carbon dioxide is liquefied or vaporized by the way that heat pump is separate simultaneously, greatly reduce the consumption of energy, and refrigeration machine is not needed during liquefied, process flow is enormously simplified, reduces the cost of investment of equipment.

Description

A kind of liquid CO 2 purification device

Technical field

The utility model relates to purifying plant technical field, specially a kind of liquid CO 2 purification device.

Background technique

Liquid CO 2 needs secondary operation due to being extremely difficult to food-class high-purity standard in process of production, existing The method of secondary operation is vaporized after depressurizing liquid CO 2, desulfurization, drying, suction after access carbon-dioxide gas compressor pressurization Attached, re-liquefied to obtain liquid CO 2, this method is undesirable in the presence of temperature higher efficacy in dry, adsorption process, two not good liquors Change the problems such as refrigeration machine energy consumption is big, and operating cost is high.

Utility model content

The purpose of this utility model is to provide a kind of liquid CO 2 purification devices, to solve above-mentioned background skill The problem of being proposed in art.

To achieve the above object, the utility model provides the following technical solutions: a kind of liquid CO 2 purification dress It sets, including vaporizer, desulfurization bed, drying bed, adsorbent bed, supercharger and flash tank, the liquid CO 2 enters vaporizer Cold side, the vaporizer cold side outlet port connect desulfurization bed entrance, the desulfurization bed outlet connection drying bed entrance, the drying bed Outlet connection adsorbent bed entrance, the adsorbent bed outlet connection supercharger entrance, the supercharger outlet connection vaporizer hot side Entrance, the vaporizer hot side outlet connect flash tank entrance, flash drum overhead outlet emptying, and the flash tank bottom goes out Mouth obtains high-purity production liquid carbon dioxide.

Compared with prior art, the utility model has the beneficial effects that the liquid CO 2 purification device, low The process that desulfurization, drying, absorption are carried out under the environment of temperature considerably increases the effect of purification, while separate by two by heat pump Carbonoxide is liquefied or is vaporized, and greatly reduces the consumption of energy, and do not need refrigeration machine during liquefied, greatly Process flow is simplified greatly, reduces the cost of investment of equipment.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model.

In figure: 1, vaporizer, 2, desulfurization bed, 3, drying bed, 4, adsorbent bed, 5, supercharger, 6, flash tank.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, the utility model provides a kind of technical solution: a kind of liquid CO 2 purification device, packet Vaporizer 1, desulfurization bed 2, drying bed 3, adsorbent bed 4, supercharger 5 and flash tank 6 are included, it is cold that liquid CO 2 enters vaporizer 1 Side, staff control the conveying of liquid CO 2 by the regulating valve and pressure gauge installed on liquefier 1, and pressure is 1.6MPa, temperature are that -30 DEG C of liquid CO 2 enters 1 cold side of vaporizer, are 2.2MPa with 1 hot side pressure of vaporizer is entered Atmospheric carbon dioxide exchange heat, the liquid CO 2 after heat exchange is vaporized, 1 cold side outlet port of vaporizer connect desulfurization bed 2 Entrance, carbon dioxide temperature are increased to 10 DEG C and enter desulfurization bed 2, and desulfurization bed 2 fills disposable solid desulfurating agent, and to be desulfurization dose full The desulfurizing agent more renewed with after, the outlet of desulfurization bed 2 connection 3 entrance of drying bed, the outlet of drying bed 3 connection 4 entrance of adsorbent bed, desulfurization Atmospheric carbon dioxide afterwards enters drying bed 3 and adsorbent bed 4, the filling of drying bed 3 can the regenerated desiccant of high temperature circulation, adsorbent bed 4 filling can high temperature regeneration adsorbent, to be dried dose and adsorbent saturation after can high temperature regeneration cycles use, adsorbent bed 4 export 5 entrance of supercharger, the outlet of supercharger 5 connection 1 hot side entrance of vaporizer are connected, the atmospheric carbon dioxide after absorption passes through supercharger 5 are pressurized to after 2.2MPa into 1 hot side of vaporizer, and 1 hot side outlet of vaporizer connects 6 entrance of flash tank, 6 top exit of flash tank Emptying, 6 outlet at bottom of flash tank obtain high-purity production liquid carbon dioxide, change with the liquid carbon dioxide of 1 cold side of vaporizer Become the liquid CO 2 that pressure is 2.1MPa after heat and enter flash tank 6, is obtained after on-condensible gas is released in flash tank High purity product liquid CO 2.

In the implementation case, in use, pressure is 1.6MPa, temperature is that -30 DEG C of liquid CO 2 enters vaporizer 1 Cold side exchanges heat with the atmospheric carbon dioxide that 1 hot side pressure of vaporizer is 2.2MPa is entered, the liquid CO 2 after heat exchange It is vaporized, temperature is increased to 10 DEG C and enters desulfurization beds 2, and desulfurization bed 2 fills disposable solid desulfurating agent, after to be desulfurization dose of saturation more The desulfurizing agent renewed, the atmospheric carbon dioxide after desulfurization enter drying bed 3 and adsorbent bed 4, the filling of drying bed 3 can high temperature circulation again Raw desiccant, adsorbent bed 4 filling can high temperature regeneration adsorbent, to be dried dose and adsorbent saturation after can high temperature regeneration cycles It uses, the atmospheric carbon dioxide after absorption enters 1 hot side of vaporizer after supercharger 5 is pressurized to 2.2MPa, cold with vaporizer 1 Become the liquid CO 2 that pressure is 2.1MPa after the liquid carbon dioxide heat exchange of side and enter flash tank 6, is released in flash tank High purity product liquid CO 2 is obtained after releasing on-condensible gas, obtains food-class high-purity liquid CO 2 after processing, Product purity is up to 99.999%, 95% or more recovery rate of CO 2.

In the description of the present invention, it should be understood that term " coaxial ", " bottom ", " one end ", " top ", " in The orientation of the instructions such as portion ", " other end ", "upper", " side ", " top ", "inner", " front ", " center ", " both ends " or position are closed System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot It is construed as a limitation of the present invention.

In the present invention unless specifically defined or limited otherwise, term " installation ", " setting ", " connection ", " Gu Calmly ", the terms such as " being screwed on " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral； It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly, for this field For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (1)

1. a kind of liquid CO 2 purification device, including vaporizer (1), desulfurization bed (2), drying bed (3), adsorbent bed (4), supercharger (5) and flash tank (6), it is characterised in that: the liquid CO 2 enters vaporizer (1) cold side, the vapour Change device (1) cold side outlet port and connects desulfurization bed (2) entrance, described desulfurization bed (2) outlet connection drying bed (3) entrance, the drying Bed (3) outlet connection adsorbent bed (4) entrance, described adsorbent bed (4) outlet connection supercharger (5) entrance, the supercharger (5) go out Mouth connection vaporizer (1) hot side entrance, vaporizer (1) hot side outlet connect flash tank (6) entrance, the flash tank (6) Top exit emptying, flash tank (6) outlet at bottom obtain high-purity production liquid carbon dioxide.