A method and device for purifying yellow phosphorus tail gas by microwave heating
A technology of yellow phosphorus tail gas and microwave heating, which is applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of complex yellow phosphorus tail gas components, difficult control of purification conditions, and serious equipment corrosion, and achieve the realization of recycling Economical, improved energy utilization, and fast heating rate
Active Publication Date: 2020-10-09
SOUTHWEST FORESTRY UNIVERSITY
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Problems solved by technology
Although there are many ways to purify waste gas, the composition of yellow phosphorus tail gas is complex, which is quite corrosive to equipment, and the purification conditions are difficult to control. Therefore, how to effectively dry and purify yellow phosphorus tail gas before recycling is an urgent need to solve technical problem
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[0027] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0028] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature relative to another element or feature shown in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described ...
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The invention discloses a method for purifying yellow phosphorus tail gas by using microwave heating and an apparatus thereof. The apparatus comprises a tail gas inlet pipe, a tail gas outlet pipe, a heating pipe and a microwave apparatus, the heating pipe is respectively connected with the tail gas inlet pipe and the tail gas outlet pipe, the yellow phosphorus tail gas is introduced into the heating pipe through the tail gas inlet pipe, the microwave apparatus generates microwave which is transmitted to the heating pipe, the yellow phosphorus tail gas is subjected to drying and purification, the dried and purified yellow phosphorus tail gas is introduced into the tail gas outlet pipe from the heating pipe, and then is introduced into a resource utilization apparatus through the tail gas outlet pipe, or is directly discharged to atmosphere. According to the invention, a microwave technology is employed for dual effects of heating and purifying, the heating rate is fast, the control is easy, and the operation is convenient; the tail gas is dried and purified before resource utilization, the energy utilization rate is increased, and the effective resource comprehensive utilization is formed. The apparatus and the method can be used for various phosphor chemical enterprises, and have great meaning for pollutants discharge reduction, refuse resource and circular economy realization.
Description
technical field [0001] The invention relates to the field of yellow phosphorus tail gas purification, in particular to a method and device for purifying yellow phosphorus tail gas by microwave heating. Background technique [0002] my country is the main producer of yellow phosphorus in the world, with a total output of 1.8 million tons per year, ranking first in the world. The production of yellow phosphorus is accompanied by a large amount of yellow phosphorus tail gas, and every ton of yellow phosphorus produces about 2500-3000m 3 The main component of yellow phosphorus tail gas is carbon monoxide, with a content of 85% to 92%, and it also contains highly corrosive impurities such as hydrogen sulfide, white phosphorus, phosphine, and sulfur dioxide. Carbon monoxide can be used as fuel. Therefore, the traditional method of yellow phosphorus tail gas treatment - burning and emptying, not only brings a lot of carbon dioxide emissions, but also causes a waste of resources. ...
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IPC IPC(8): B01D53/00B01D46/24
CPCB01D46/2411B01D53/005B01D53/007B01D2257/302B01D2257/304B01D2257/306B01D2257/502B01D2257/553B01D2259/806
Inventor 邓志华伏鸭生郑买富李春阳邓清宁平李艳梅周成
Owner SOUTHWEST FORESTRY UNIVERSITY