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Dephosphorization catalytic reaction technology of yellow phosphorus tail gas and apparatus

A yellow phosphorus tail gas and catalytic reaction technology, which is applied in steam condensation, chemical instruments and methods, and separation of dispersed particles, can solve the problems of loss and deactivation of catalytic active centers, achieve extended service life, simple equipment and operation, and save energy Capital equipment investment and the effect of operating costs

Active Publication Date: 2015-04-29
BEIJING PEKING UNIV PIONEER TECH
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Problems solved by technology

[0008] The above specific representative existing technologies have the following problems: the adsorbent or the catalyst needs to be regenerated after being used for a period of time, and the regeneration process not only increases the complexity of the equipment and operation, but also for the catalyst, repeated regeneration will cause serious problems. Causes gradual loss of catalytically active centers leading to eventual deactivation

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  • Dephosphorization catalytic reaction technology of yellow phosphorus tail gas and apparatus
  • Dephosphorization catalytic reaction technology of yellow phosphorus tail gas and apparatus
  • Dephosphorization catalytic reaction technology of yellow phosphorus tail gas and apparatus

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Embodiment Construction

[0057] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0058] As far as the prior art is concerned, when the catalytic reaction of dephosphorization of yellow phosphorus tail gas is carried out, the catalytic product is attached to the catalyst, so that the catalyst needs to be regenerated after a period of use, the reaction cannot be carried out continuously, and the complexity of equipment and operation is increased. In view of this, the inventor of this patent creatively proposes one of the core concepts of the embodiments of the present invention to inject liquid water or water vapor into the filtered and pressurized yellow phosphorus tail gas to form a gas-water mixture, which is then preheated and transformed into Gas, and then carry out a catalytic reaction, the phosphorus oxide...

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Abstract

The invention provides a dephosphorization catalytic reaction technology of yellow phosphorus tail gas and an apparatus. The technology comprises the following steps: the yellow phosphorus tail gas through filter dust is pressurized to a preset air pressure value, liquid water or water vapor is injected according to preset volume percentage to form a gas-water mixture; the gas-water mixture is preheated to convert to a gaseous state, and a catalytic reaction is carried out under a preset temperature to generate phosphorus oxide, phosphorus oxide can generate phosphoric acid after being mixed with water vapor, desorption is carried out under preset bed layer temperature, and the phosphoric acid can flow out by following with reaction tail gas in a gaseous state form. According to the invention, yellow phosphorus tail gas can be consecutively purified, and the catalyst is not required for regenerating.

Description

technical field [0001] The invention relates to a catalytic reaction process, in particular to a dephosphorization catalytic reaction process and device for yellow phosphorus tail gas. Background technique [0002] Phosphorus is widely used in detergent, pesticide, biopharmaceutical and other industries. Every ton of yellow phosphorus extracted from natural phosphate rock produces 2500-3000m3 3 Exhaust gas, its typical composition is shown in the table below. [0003] Element content Element content CO 85％～95％ CH 4 ～0.3％ N 2 2～5％ Total sulfur (H 2 S, organic sulfur) 500~3000ppm h 2 o ～5％ Total phosphorus (PH 3 +P 4 ) 500~1500ppm H 2 1～8％ HF ~100ppm CO 2 1～4％ H 3 ~50ppm O 2 ～1％ [0004] There are many types of pollutants in the yellow phosphorus tail gas, which are highly toxic and cannot be dischar...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/77B01D5/00B01D53/46
Inventor 蒋化勾华杰高翊唐伟张佳平耿云峰童显忠谢有畅
Owner BEIJING PEKING UNIV PIONEER TECH