Defoaming device of tube-type down-flow evaporator
A falling film evaporator and evaporator technology, applied in the direction of alumina/aluminum hydroxide, etc., can solve the problems of poor defoaming effect and unreasonable angle, so as to prevent pollution, improve recovery efficiency, and improve defoaming effect Effect
Inactive Publication Date: 2012-06-27
苏州市中衡压力容器制造有限公司
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Problems solved by technology
When this kind of demister is used, the angle between the damping blades is not very reasonable, generally it is set to about 120 degrees, and the surface of the damping blades is smooth and flat. When in use, when the steam flows through these damping blades, the air flow Less impact with damper vanes, therefore, less foam removal
Method used
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[0015] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0016] like figure 1 and 2 As shown, the defoaming device of the tube-type falling film evaporator includes a separation chamber 2 arranged in the lower half of the shell 1, a number of vaporizers arranged in the separation chamber 2 and between the shell 1 and the tube-type evaporator 3 Liquid separator 4, a number of gas-liquid separators 4 are all distributed around the tube evaporator 3 and separate the upper and lower parts of the separation chamber 2 from each other, and are located on the housing 1 of the upper separation chamber 2 of the gas-liquid separator 4 There is an air outlet 5, and the vapor-liquid separator 4 is composed of a number of curved damping vanes 6 parallel to each other and then arranged in parallel. The foam removal channel 7 is formed between adjacent damping vanes 6, and the surfaces of the damping vanes 6 are u...
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The invention discloses a defoaming device of a pipe-typed falling film evaporator, and comprises a separation chamber that is arranged at the lower half part of a shell, and a plurality of vapor-liquid separators that are arranged inside the separation chamber and are arranged between the shell and the pipe-typed evaporator; the vapor-liquid separators are uniformly distributed on the periphery of the pipe-typed evaporator, and separate the upper part from the lower part of the separation chamber; the shell of the separation chamber arranged on the upper part of the vapor-liquid separator is provided with a gas discharging port; the vapor-liquid separators are respectively formed by a plurality of curved damping vanes that are paralleled to each other; a defoaming passage is formed between two adjacent damping vanes; the surface of the damping vanes is irregular. The device has the advantages that through changing the structure of the defoaming device, the defoaming effect is obviously improved, the effective compositions in the vapor is prevented from being brought out, the recycling efficiency of the product is improved, and the pollution can be prevented.
Description
technical field [0001] The invention relates to a tube type falling film evaporator, in particular to a defoamer for the tube type falling film evaporator used in the alumina industry. Background technique [0002] The defoaming device is a device used in the tubular falling film evaporator to separate and filter the secondary steam, while keeping its channel smooth, so that the condensed water of the secondary steam can improve the cleanliness. The defoaming device of the existing tubular falling film evaporator includes a vapor-liquid separator arranged between the lower part of the shell and the tubular evaporator. The vapor-liquid separator is distributed around the evaporator, and the vapor-liquid separator will separate The lower half of the chamber is separated from the upper half, and an air outlet is opened on the wall of the separation chamber located at the upper part of the gas-liquid separator. Form a defoaming channel. When this demister is used, the angle be...
Claims
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IPC IPC(8): C01F7/02
Inventor 葛向华陈悦
Owner 苏州市中衡压力容器制造有限公司