Fixing bed wet catalytic oxidation reactor using foamless oxygen-supplying technology

A wet catalytic oxidation, fixed bed technology, applied in chemical instruments and methods, oxidized water/sewage treatment, chemical/physical processes, etc., can solve the problem of low utilization rate of oxidants, achieve large surface area, speed up reaction speed, and increase surface area Effect

Inactive Publication Date: 2011-06-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fixed-bed wet catalytic oxidation reactor adopting no-bubble oxygen supply technology, to overcome the problem that the utilization rate of the oxidant in the prior art is not high

Method used

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  • Fixing bed wet catalytic oxidation reactor using foamless oxygen-supplying technology
  • Fixing bed wet catalytic oxidation reactor using foamless oxygen-supplying technology

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specific Embodiment approach 1

[0007] Specific implementation mode one: (see figure 1 ) This embodiment is composed of a housing 12, a hollow fiber membrane oxygen supply module 11 and an oxidant gas source 8. The hollow fiber membrane oxygen supply module 11 is longitudinally arranged in the housing 12 and divides the inner chamber of the housing 12 into an upper head chamber 12-1 and lower head chamber 12-2, the top of the upper head chamber 12-1 has a water inlet 12-3, the bottom of the lower head chamber 12-2 has a water outlet 12-4, and the hollow fiber The inlet pipe of the membrane oxygen supply assembly 11 passes through the housing 12 and communicates with the outlet of the oxidant gas source 8, the air outlet pipe of the hollow fiber membrane oxygen supply assembly 11 communicates with the outside of the housing 12, and the fiber of the hollow fiber membrane oxygen supply assembly 11 The catalyst particle packing is filled between the tubes 10, and the catalyst particle packing is one or more than...

specific Embodiment approach 2

[0013] Specific implementation mode two: (see figure 1 ) The difference between this embodiment and Embodiment 1 is that it also includes a liquid flow meter 3, a No. 1 pressure gauge 4, a No. 2 pressure gauge 5 and an exhaust valve 6, and the liquid flow meter 3 is arranged on the side of the water inlet 12-3. On the pipeline, the No. 1 pressure gauge 4 is set on the top of the housing 12 to measure the pressure in the upper head cavity 12-1, and the exhaust valve 6 is set on the top of the housing 12 to discharge the pressure in the upper head cavity 12-1. The No. 2 pressure gauge 5 is set between the inlet pipe of the hollow fiber membrane oxygen supply module 11 and the outlet of the oxidant gas source 8 . Such setting is beneficial to the monitoring and control of the reaction process of the reactor.

specific Embodiment approach 3

[0014] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the oxidant gas source 8 is an oxidant gas bottle.

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Abstract

The present invention relates to a fixed bed wet catalytic oxidation reactor by adopting non-bubbling oxygen-supplying technique. It includes shell body, hollow fibre membrane oxygen-supplying component and oxidant gas source. The hollow fibre membrane oxygen-supplying component is longitudinally set in the shell body and makes the inner cavity of said shell body be divided into upper head cavityand lower head cavity, in the top end of said upper head cavity a water inlet is cut, and in the bottom end of said lower head cavity a water outlet is cut, the gas-intake pipe of said hollow fibre membrane oxygen-supplying component is extended from said shell body to the exterior and is communicated with outlet of oxidant gas source. The non-bubbling aeration membranes in said hollow fibre membrane oxygen-supplying component are uniformly distributed in the reactor interior, so that it makes catalytic oxidation reaction be fully implemented, does not produce visible bubble, does not affect the full contact of sewage with surface of catalyst and can raise mass transfer efficiency of oxygen.

Description

technical field [0001] The invention relates to a fixed-bed wet catalytic oxidation reactor. Background technique [0002] Wet catalytic oxidation reactor is often used for advanced treatment of industrial wastewater and domestic sewage. It is a new type of high-efficiency refractory organic pollutant treatment equipment combined with catalytic oxidation technology and traditional fixed bed technology. The organic pollutants in the water are catalyzed and oxidized by the catalyst to achieve the purpose of treating wastewater. [0003] The oxidant gas in the catalytic oxidation fixed bed reactor used for sewage treatment often uses oxygen, air or ozone, and the gas generally enters the water body through aeration at the bottom of the fixed bed or pressurized dissolved air. Aeration at the bottom of the fixed bed can easily cause gas to adsorb on the surface of the catalyst, resulting in a smaller contact area between the wastewater entering the fixed bed and the catalyst, re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/02C02F1/72
Inventor 尤宏金大瑞孙德智李玲
Owner HARBIN INST OF TECH
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