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Stepped refrigerating system and method for recovering oil gas and defrosting method

A refrigeration system, a stepped technology, applied in the direction of refrigeration and liquefaction, refrigerators, refrigeration components, etc., can solve the problems of large compressor damage, long defrosting time, and shortened compressor life, so as to increase the energy efficiency of the system and ensure The effect of service life and defrosting time saving

Active Publication Date: 2012-10-03
上海森鑫新能源科技有限公司
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Problems solved by technology

[0018] Compared with using a four-way reversing valve in the first stage, the pulse defrosting system only needs to add a flushing solenoid valve, which saves a little cost, but the defrosting time is long, and the damage to the compressor is very large, which may bring compressor fluid Therefore, it is generally only used in ultra-small refrigeration systems where the cost of the compressor is relatively low. When the life of the compressor is shortened or the liquid shock is damaged, it is only necessary to purchase another compressor. Can
But it is not suitable for larger refrigeration systems such as oil and gas recovery, where the cost of compressors can range from tens of thousands or even hundreds of thousands

Method used

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  • Stepped refrigerating system and method for recovering oil gas and defrosting method

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Embodiment Construction

[0053] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0054] see figure 1 , figure 2 , image 3 and Figure 4 , a cascaded refrigeration system for oil and gas recovery, comprising an induced draft fan, a precooler, a primary refrigeration system, a secondary refrigeration system and a tertiary refrigeration system, the induced draft fan is connected to the precooler.

[0055] The precooler is connected to the primary refrigeration system, the primary refrigeration system is connected to the secondary refrigeration system, and the secondary refrigeration system is connected to the tertiary refrigeration system.

[0056] In order to make the collected gaseous oil into liquid smoothly, the first-stage refrigeration system includes a first-stage compressor 1, a first-stage air condenser...

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Abstract

The invention relates to a stepped refrigerating system for recovering oil gas, which comprises a primary refrigerating system, a secondary refrigerating system and a tertiary refrigerating system, wherein the primary refrigerating system is connected with the secondary refrigerating system connected with the tertiary refrigerating system. The invention has the benefits that a refrigerant in a hot steam manner is directly used for performing the phase change defrosting (hot freon defrosting), and the energy efficiency ratio is high. Since the hot freon defrosting is carried out in a heat exchanger, so that the heat transfer speed and the defrosting speed are high, the defrosting time of a primary oil gas condenser and a secondary oil gas condenser is within 15 minutes, and the defrosting time of a tertiary oil gas condenser can also be within 30 minutes. The defrosting time is saved greatly.

Description

technical field [0001] The invention relates to a refrigeration system, in particular to a stepped refrigeration system for recovering oil and gas, a refrigeration method and a defrosting method. Background technique [0002] In the prior art, when recovering volatile chemical vapors, in order to control the concentration of tail gas, a combined process technology of several recovery methods is usually used, such as condensation plus adsorption process, condensation plus membrane separation process, compression plus condensation The above recycling technologies all need to be based on condensation recovery technology. [0003] For oil and gas recovery, the condensation method refers to the collection of volatilized gasoline oil and gas during the process of loading and unloading gasoline and refueling vehicles, and through low-temperature condensation to change the oil and gas from gaseous state to liquid state, and then to gasoline again, so as to achieve the purpose of rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B7/00F25B41/04F25B41/06F25B47/02
Inventor 白爽
Owner 上海森鑫新能源科技有限公司
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