Control method for preparation of high-density carbon dioxide
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A carbon dioxide and control method technology, applied in chemical instruments and methods, electrical program control, program control in sequence/logic controllers, etc., can solve the problems of high cost and low efficiency, achieve small shock and vibration, and improve work efficiency , The effect of reducing the cost of equipment input
Active Publication Date: 2019-04-02
XIAMEN UNIV OF TECH
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[0004] The invention provides a method for controlling the preparation of high-density carbon dioxid
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[0054] Example 1
[0055] Reference figure 1 As shown, the present invention provides a control method for preparing high-density carbon dioxide, which is characterized in that it includes the following steps:
[0056] S1. Step 1. After the device is started, initialize it and check whether the device is operating normally. Determine the pressure of the liquid carbon dioxide before entering the liquid. When the liquid carbon dioxide reaches the preset pressure value, go to step two.
[0057] Optionally, in step one, the preset pressure value is 1.5-2.2Mpa. Generally speaking, dry ice preparation needs to be carried out under high pressure (8.0MPa), gas CO 2 It is liquefied under normal temperature conditions, and then becomes cryogenic liquid after throttling and expansion, and then enters the dry ice machine to prepare dry ice. The power consumption of the equipment is extremely high. The embodiment of the present invention is prepared by using a low pressure method (1.5MPa-2.5MPa...
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[0083] Example 2
[0084] Reference figure 1 As shown, this embodiment provides a control method for preparing high-density carbon dioxide, using the following high-density carbon dioxide molding equipment:
[0085] Reference figure 2 As shown, this embodiment provides a high-density carbon dioxide molding equipment, which includes a frame body 1 and a turntable 2 arranged in the frame body 1, a liquid inlet unit 3, a pressing unit 4 and a demolding unit 5. The units are independent of each other and work together to complete the preparation of high-density solid carbon dioxide.
[0086] Optional, reference figure 2 , 4 As shown, there are at least two of the liquid inlet station 22, the pressing station 23 and the demolding station 24, and the same two stations are symmetrically arranged on the turntable 2. In the present invention, the liquid inlet unit 3, the pressing unit 4 and the demolding unit 5 are arranged in the circumferential direction through a multi-station design of...
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Abstract
The invention provides a control method for preparing high-density carbon dioxide. The control method comprises the following steps: judging the pressure of liquid carbon dioxide before the liquid carbon dioxide enters; when the pressure of the liquid carbon dioxide reaches a preset pressure value, opening a rotating disk, and after a device is initialized, starting feeding the liquid carbon dioxide; allowing the rotating disk to rotate to drive an extrusion type cavity filled with snowflake-like carbon dioxide to be rotated to a press molding station, and carrying out press molding; allowingthe rotating disk to rotate to drive the extrusion type cavity filled with block-shaped carbon dioxide to be rotated to a demolding station, and carrying out demolding; allowing the rotating disk to rotate to drive the block-shaped carbon dioxide demolded extrusion type cavity to be rotated to a liquid feeding station; and cyclically performing the step 2 to the step 5, and simultaneously performing liquid feeding, press molding and demolding respectively at the liquid feeding station, the press molding station and the demolding station. According to the invention, through controlling of the rotating disk to a plurality of stations, the steps of liquid feeding, press molding and demolding are simultaneously carried out at different stations, so equipment operation is streamlined; the costof investment is reduced; and the efficiency of working is improved.
Description
technical field [0001] The invention relates to the field of solid carbon dioxide production, in particular to a control method for preparing high-density carbon dioxide. Background technique [0002] At present, the preparation of solid carbon dioxide usually uses a throttling expansion device to make liquid carbon dioxide physically change in the cavity to form a snowflake, and then squeeze it through the extrusion mechanism to form high-density solid carbon dioxide in the extrusion cavity, and finally the Solid carbon dioxide is pushed out of the extrusion cavity. [0003] In the process of solid carbon dioxide production, ice making, ice pressing and demolding steps are usually carried out on different equipment, and each process needs to be processed for a period of time, and the next process can only be entered after the previous process is completed. The ice making efficiency is low. Especially in the mass production process, batches of equipment are often required f...
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