Carbon dioxide vaporization residual cold recycling device

Abstract

The utility model relates to a carbon dioxide vaporization residual cold recycling device. According to the technical scheme, the lower end of an ethylene oxide storage tank is connected to an ethylene carbonate reaction kettle, the outlet end of a liquid carbon dioxide storage tank is connected to an inlet of a first vaporizer, an outlet is connected with a second vaporizer, and an outlet of the second vaporizer is connected to a gas carbon dioxide buffer tank through a pipeline; an outlet of the gas carbon dioxide buffer tank is connected to an inner cavity of the ethylene carbonate reaction kettle through a pipeline; an inlet of a clamping wall cavity of the first vaporizer is connected with the chilled water storage tank through a pipeline, an outlet is connected to the refrigerator through a pipeline, an outlet of the refrigerator is connected to a clamping wall cavity of the ethylene oxide storage tank through a pipeline, and an outlet of the clamping wall cavity of the ethylene oxide storage tank is circularly connected to the chilled water storage tank through a pipeline. The utility model has the beneficial effects that the ethylene glycol aqueous solution is used as a heat exchange medium, and the cooling capacity generated by carbon dioxide vaporization is recovered and utilized, so that the effects of energy conservation and emission reduction are realized, and the use of refrigeration equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ethylene carbonate preparation remaining cold recovery, especially relates to a carbon dioxide vaporization remaining cold recovery and utilization device. BACKGROUND

[0002] Ethylene carbonate is synthesized from ethylene oxide and carbon dioxide, which is an important chemical process and widely used in pharmaceutical, organic chemistry and polymer material fields. During the vaporization of liquid carbon dioxide, the heat of the surrounding environment is absorbed, thus producing cold energy. By recycling and utilizing the cold energy, the energy loss of the device can be reduced. At present, the ethylene oxide storage tank cooling utilization pump is used to deliver the medium carrying cold energy to the part needing cooling, but the efficiency is relatively low and the equipment investment is large. Therefore, how to effectively recycle and utilize the cold energy of carbon dioxide during the vaporization process and reduce the energy loss of the device is an urgent problem to be solved in the field. The existing technical problems are: first, the cold energy recovery efficiency is low, and a large amount of energy is wasted; second, the equipment investment is large, and the operation cost is high, which is not conducive to large-scale application. Therefore, how to effectively recycle and utilize the cold energy and reduce the energy loss of the device is an urgent problem to be solved in the field. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at the above-mentioned defects existing in the prior art, provides a carbon dioxide vaporization remaining cold recovery and utilization device, which effectively recycles and utilizes the cold energy in the vaporization process of liquid carbon dioxide, thereby reducing the energy loss of production, and also fully utilizes the heat of reaction heat and recycles it to the hot water storage tank for reuse.

[0004] The utility model discloses a kind of carbon dioxide vaporization residual cold recycling devices, its technical scheme is: including ethylene oxide storage tank (V101), liquid carbon dioxide storage tank (V102), refrigerated water storage tank (V103), gaseous carbon dioxide buffer tank (V105), ethylene carbonate reaction kettle (F101), first vaporizer (E101), second vaporizer (E102), refrigerator (M171), ethylene oxide delivery pump (P101), liquid carbon dioxide delivery pump (P102), the lower end of the ethylene oxide storage tank (V101) is connected to the lower side of ethylene carbonate reaction kettle (F101) by pipeline and ethylene oxide delivery pump (P101), the outlet of the liquid carbon dioxide storage tank (V102) is connected to the import of first vaporizer (E101) by pipeline and liquid carbon dioxide delivery pump (P102), the outlet of first vaporizer (E101) is connected second vaporizer (E102), the outlet of second vaporizer (E102) is connected to gaseous carbon dioxide buffer tank (V105) by pipeline, the outlet of the gaseous carbon dioxide buffer tank (V105) is connected to the inner chamber of ethylene carbonate reaction kettle (F101) by pipeline;The import of the clamping wall cavity of first vaporizer (E101) is connected the outlet of refrigerated water storage tank (V103) by pipeline, the outlet of the clamping wall cavity of first vaporizer (E101) is connected to refrigerator (M171) by pipeline, the outlet of refrigerator (M171) is connected to the clamping wall cavity of ethylene oxide storage tank (V101) by pipeline, the outlet of the clamping wall cavity of ethylene oxide storage tank (V101) is connected to refrigerated water storage tank (V103) by pipeline circulation.

[0005] Preferably, the lower end of the above-mentioned ethylene oxide storage tank (V101) is connected to the clamping wall cavity import of second vaporizer (E102) by pipeline and ethylene oxide delivery pump (P101), and the clamping wall cavity outlet of second vaporizer (E102) is connected to the lower side of ethylene carbonate reaction kettle (F101) by pipeline.

[0006] Preferably, the clamping wall cavity outlet of the above-mentioned ethylene carbonate reaction kettle (F101) is connected to hot water storage tank (V104) by pipeline and hot water delivery pump (P103), and the upper end of hot water storage tank (V104) is connected to the upper portion of the clamping wall cavity of ethylene carbonate reaction kettle (F101) by pipeline.

[0007] Preferably, the outlet of the above-mentioned refrigerated water storage tank (V103) is connected to the clamping wall cavity import of first vaporizer (E101) by pipeline and refrigerated water circulating pump (P172).

[0008] Preferably, the lower end of the above-mentioned refrigerated water storage tank (V103) is further provided with an external pipeline and a liquid supplementing pipeline, a refrigerated water external delivery pump (P173) is installed on the external pipeline, and a refrigerated water liquid inlet pump (P171) is installed on the liquid supplementing pipeline.

[0009] The utility model discloses the beneficial effect is: the utility model discloses through with glycol aqueous solution as heat exchange medium, recovery and utilize the cold of carbon dioxide vaporization, glycol aqueous solution not only can be used as the heat source of liquid carbon dioxide vaporization, and can release heat in the liquid carbon dioxide vaporization process through the form of heat exchange to reduce the temperature of self solution, provide the heat exchange source of ethylene oxide storage tank, realize the energy -conserving and emission -reducing effect, reduce the use of refrigeration equipment, in addition, also fully utilize the heat release characteristics of ethylene oxide and carbon dioxide reaction, recycle heat to hot water storage tank and utilize again, thereby reduce the production cost of ethylene carbonate, not only reduce the use of refrigeration equipment, reduce the electric energy consumption, be favorable to reducing equipment maintenance cost, reduce production cost, and also produce heat source, fully utilize the heat, reduce energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural schematic diagram of the embodiment 1 of the utility model,

[0011] Figure 2 It is the structural schematic diagram of the embodiment 2 of the utility model,

[0012] In the drawing: ethylene oxide storage tank (V101), liquid carbon dioxide storage tank (V102), refrigerated water storage tank (V103), hot water storage tank (V104), gas carbon dioxide buffer tank (V105), ethylene carbonate reaction kettle (F101), first vaporizer (E101), second vaporizer (E102), refrigerator (M171), refrigerated water inlet pump (P171), refrigerated water circulating pump (P172), refrigerated water delivery pump (P173), ethylene oxide delivery pump (P101), liquid carbon dioxide delivery pump (P102), hot water delivery pump (P103). DETAILED DESCRIPTION

[0013] The preferred embodiments of the utility model are described below in conjunction with the drawings, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0014] Embodiment 1, refer to Figure 1The utility model discloses a kind of carbon dioxide vaporization residual cold recycling devices, including ethylene oxide storage tank (V101), liquid carbon dioxide storage tank (V102), refrigerated water storage tank (V103), gaseous carbon dioxide buffer tank (V105), ethylene carbonate reaction kettle (F101), first vaporizer (E101), second vaporizer (E102), refrigerator (M171), ethylene oxide delivery pump (P101), liquid carbon dioxide delivery pump (P102), the lower end of the ethylene oxide storage tank (V101) is connected to the lower side of ethylene carbonate reaction kettle (F101) by pipeline and ethylene oxide delivery pump (P101), the outlet of the liquid carbon dioxide storage tank (V102) is connected to the import of first vaporizer (E101) by pipeline and liquid carbon dioxide delivery pump (P102), the outlet of first vaporizer (E101) is connected second vaporizer (E102), the outlet of second vaporizer (E102) is connected to gaseous carbon dioxide buffer tank (V105) by pipeline, the outlet of the gaseous carbon dioxide buffer tank (V105) is connected to the inner chamber of ethylene carbonate reaction kettle (F101) by pipeline;The import of the clamping wall cavity of first vaporizer (E101) is connected the outlet of refrigerated water storage tank (V103) by pipeline, the outlet of the clamping wall cavity of first vaporizer (E101) is connected to refrigerator (M171) by pipeline, the outlet of refrigerator (M171) is connected to the clamping wall cavity of ethylene oxide storage tank (V101) by pipeline, the outlet of the clamping wall cavity of ethylene oxide storage tank (V101) is connected to refrigerated water storage tank (V103) by pipeline circulation.

[0015] Wherein, the clamping wall cavity outlet of the above-mentioned ethylene carbonate reaction kettle (F101) is connected to hot water storage tank (V104) by pipeline and hot water delivery pump (P103), the upper end of the hot water storage tank (V104) is connected to the upper portion of the clamping wall cavity of ethylene carbonate reaction kettle (F101) by pipeline.

[0016] The outlet of the above-mentioned refrigerated water storage tank (V103) is connected to the import of the clamping wall cavity of first vaporizer (E101) by pipeline and refrigerated water circulating pump (P172).

[0017] The lower end of the above-mentioned refrigerated water storage tank (V103) is further provided with an external pipeline and a liquid supplementing pipeline, a refrigerated water external delivery pump (P173) is installed on the external pipeline, and a refrigerated water inlet pump (P171) is installed on the liquid supplementing pipeline.

[0018] The utility model discloses when using, the ethylene oxide is transported to the ethylene carbonate reation kettle (F101) through the ethylene oxide delivery pump (P101), and the liquid carbon dioxide is sent to the first vaporizer (E101) through the liquid carbon dioxide delivery pump (P102), and the cold energy generated in vaporization is absorbed by the ethylene glycol aqueous solution from the chilled water storage tank (V103), and then is sent to the refrigerator (M171) to carry out recooling, thereby reducing the energy consumption of refrigeration, and then is transported to the ethylene oxide storage tank to cool down, thereby saving the energy consumption, and in addition, the heat of the ethylene carbonate reation kettle (F101) is recovered to the hot water storage tank V104 for reuse by fully utilizing the heat of reaction, thereby playing the role of energy saving and consumption reduction.

[0019] Different from example 1, the utility model discloses a carbon dioxide vaporization waste heat recycling device, including the ethylene oxide storage tank (V101), liquid carbon dioxide storage tank (V102), chilled water storage tank (V103), gas carbon dioxide buffer tank (V105), ethylene carbonate reation kettle (F101), first vaporizer (E101), second vaporizer (E102), refrigerator (M171), ethylene oxide delivery pump (P101), liquid carbon dioxide delivery pump (P102), the lower end of the ethylene oxide storage tank (V101) is connected to the downside of ethylene carbonate reation kettle (F101) through pipeline and ethylene oxide delivery pump (P101), the export of liquid carbon dioxide storage tank (V102) is connected to the import of first vaporizer (E101) through pipeline and liquid carbon dioxide delivery pump (P102), and the outlet of first vaporizer (E101) is connected second vaporizer (E102), and the outlet of second vaporizer (E102) is connected to gas carbon dioxide buffer tank (V105) through pipeline, and the outlet of gas carbon dioxide buffer tank (V105) is connected to the inner chamber of ethylene carbonate reation kettle (F101) through pipeline, the import of the double-pipe cavity of first vaporizer (E101) is connected the outlet of chilled water storage tank (V103) through pipeline, and the outlet of the double-pipe cavity of first vaporizer (E101) is connected to refrigerator (M171) through pipeline, and the outlet of refrigerator (M171) is connected to the double-pipe cavity of ethylene oxide storage tank (V101) through pipeline, and the outlet of the double-pipe cavity of ethylene oxide storage tank (V101) is connected to chilled water storage tank (V103) through pipeline circulation.

[0020] Different from example 1, the utility model discloses a carbon dioxide vaporization waste heat recycling device, including the ethylene oxide storage tank (V101), liquid carbon dioxide storage tank (V102), chilled water storage tank (V103), gas carbon dioxide buffer tank (V105), ethylene carbonate reation kettle (F101), first vaporizer (E101), second vaporizer (E102), refrigerator (M171), ethylene oxide delivery pump (P101), liquid carbon dioxide delivery pump (P102), the lower end of the ethylene oxide storage tank (V101) is connected to the downside of ethylene carbonate reation kettle (F101) through pipeline and ethylene oxide delivery pump (P101), the export of liquid carbon dioxide storage tank (V102) is connected to the import of first vaporizer (E101) through pipeline and liquid carbon dioxide delivery pump (P102), and the outlet of first vaporizer (E101) is connected second vaporizer (E102), and the outlet of second vaporizer (E102) is connected to gas carbon dioxide buffer tank (V105) through pipeline, and the outlet of gas carbon dioxide buffer tank (V105) is connected to the inner chamber of ethylene carbonate reation kettle (F101) through pipeline, the import of the double-pipe cavity of first vaporizer (E101) is connected the outlet of chilled water storage tank (V103) through pipeline, and the outlet of the double-pipe cavity of first vaporizer (E101) is connected to refrigerator (M171) through pipeline, and the outlet of refrigerator (M171) is connected to the double-pipe cavity of ethylene oxide storage tank (V101) through pipeline, and the outlet of the double-pipe cavity of ethylene oxide storage tank (V101) is connected to chilled water storage tank (V103) through pipeline circulation.

[0021] Refer to Figure 2The lower end of the ethylene oxide storage tank (V101) mentioned in the embodiment is connected to the entrance of the double-jacket cavity of the second vaporizer (E102) through a pipeline and an ethylene oxide delivery pump (P101), the exit of the double-jacket cavity of the second vaporizer (E102) is connected to the lower side of the ethylene carbonate reaction kettle (F101) through a pipeline, and the ethylene oxide of the ethylene oxide storage tank (V101) is delivered to the double-jacket cavity of the second vaporizer (E102) through a pipeline and can be continuously cooled, thereby playing a further cooling role and fully utilizing the cold energy in the carbon dioxide vaporization process.

[0022] The above is only the preferred embodiment of the present application, and any skilled person in the art can modify the technical solutions described above or modify them into equivalent technical solutions. Therefore, any simple modification or equivalent transformation according to the technical solutions of the present application is within the scope of protection of the present application.

Claims

1. A carbon dioxide vaporization waste heat recovery device, characterized by: The system comprises an ethylene oxide storage tank (V101), a liquid carbon dioxide storage tank (V102), a chilled water storage tank (V103), a gaseous carbon dioxide buffer tank (V105), an ethylene carbonate reactor (F101), a first vaporizer (E101), a second vaporizer (E102), a refrigerator (M171), an ethylene oxide delivery pump (P101), a liquid carbon dioxide delivery pump (P102), the lower end of the ethylene oxide storage tank (V101) is connected to the lower side of the ethylene carbonate reactor (F101) through a pipeline and the ethylene oxide delivery pump (P101), the outlet end of the liquid carbon dioxide storage tank (V102) is connected to the inlet of the first vaporizer (E101) through a pipeline and the liquid carbon dioxide delivery pump (P102), the outlet of the first vaporizer (E101) is connected to the second vaporizer (E102), the outlet of the second vaporizer (E102) is connected to the gaseous carbon dioxide buffer tank (V105) through a pipeline, and the outlet of the gaseous carbon dioxide buffer tank (V105) is connected to the inner cavity of the ethylene carbonate reactor (F101) through a pipeline; the inlet of the double-pipe cavity of the first vaporizer (E101) is connected to the outlet of the chilled water storage tank (V103) through a pipeline, the outlet of the double-pipe cavity of the first vaporizer (E101) is connected to the refrigerator (M171) through a pipeline, the outlet of the refrigerator (M171) is connected to the double-pipe cavity of the ethylene oxide storage tank (V101) through a pipeline, and the outlet of the double-pipe cavity of the ethylene oxide storage tank (V101) is connected to the chilled water storage tank (V103) through a pipeline.

2. The carbon dioxide vaporization waste heat recovery device according to claim 1, characterized by: The lower end of the ethylene oxide storage tank (V101) is connected to the inlet of the double-pipe cavity of the second vaporizer (E102) through a pipeline, and the outlet of the double-pipe cavity of the second vaporizer (E102) is connected to the lower side of the ethylene carbonate reactor (F101) through a pipeline.

3. The carbon dioxide vaporization waste heat recovery device according to claim 1 or 2, characterized by: The outlet of the double-pipe cavity of the ethylene carbonate reactor (F101) is connected to the hot water storage tank (V104) through a pipeline and a hot water delivery pump (P103), and the upper end of the hot water storage tank (V104) is connected to the upper part of the double-pipe cavity of the ethylene carbonate reactor (F101) through a pipeline.

4. The carbon dioxide vaporization waste heat recovery device according to claim 3, characterized in that: The outlet of the chilled water storage tank (V103) is connected to the inlet of the double-pipe cavity of the first vaporizer (E101) through a pipeline and a chilled water circulating pump (P172).

5. The carbon dioxide vaporization waste heat recovery device according to claim 4, characterized by: The lower end of the chilled water storage tank (V103) is also provided with an external delivery pipeline and a liquid supplementing pipeline, a chilled water external delivery pump (P173) is installed on the external delivery pipeline, and a chilled water inlet pump (P171) is installed on the liquid supplementing pipeline.

Images