Impinging stream reactor

An impinging flow reactor and reactor technology, applied in chemical instruments and methods, inorganic chemistry, alkali metal aluminate/aluminum oxide/aluminum hydroxide preparation, etc., can solve problems such as single method, increase reaction area, The effect of uniform growth of particles and uniform dispersion of grains

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is relatively simple and is only used for liquid-liquid p

Method used

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  • Impinging stream reactor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] Add bottom water to the bottom of the gas-liquid impinging flow reactor, and heat it to 90°C; start the impinging flow reactor, and adjust the frequency of the ultrasonic generator to 30KHZ. Adjust the impact direction of the two acceleration tubes to be horizontal impact, start the accelerator to inject the alkali metal aluminate aqueous solution with a concentration of 30g / 100mL from the feed port I at a flow rate of 15L / h, and atomize the liquid through the pressure atomizing nozzle. CO injected at a flow rate of 10L / h from the accelerator pipe at the air inlet at the same level 2 collide with each other, react for 1.0h, stop injecting gas and liquid and the ultrasonic generator at the bottom; at the same time, continuously add sodium metaaluminate solution and aluminum sulfate at the feed ports II and III at both ends of the bottom of the impinging flow reactor at 0.6L / min. solution, adjust the pH value to 7.5, after 15 minutes of neutralization ...

Example Embodiment

[0028] Example 2

[0029] Add bottom water to the bottom of the gas-liquid impinging flow reactor, and heat it to 80 °C; start the impinging flow reactor, and adjust the frequency of the ultrasonic generator to 50 kHz. Adjust the impact direction of the two acceleration tubes to be horizontal impact, start the accelerator to inject the alkali metal aluminate aqueous solution with a concentration of 25g / 100mL from the feed port I at a flow rate of 10L / h, and atomize the liquid through the pressure atomizing nozzle. CO injected at a flow rate of 10L / h from the accelerator pipe at the air inlet at the same level 2 collide with each other, react for 1.0h, stop injecting gas and liquid and the ultrasonic generator at the bottom; at the same time, continuously add sodium metaaluminate solution and aluminum sulfate at the feed ports II and III at both ends of the bottom of the impinging flow reactor at 0.8L / min. solution, adjust the pH value to 7.0, and stop feeding after 10min of n...

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Abstract

The invention discloses an impinging stream reactor. The impinging stream reactor comprises a gas-liquid reactor, a communicating pipe and a liquid-liquid reactor from top to bottom, wherein the gas-liquid reactor and the liquid-liquid reactor are connected through the communicating pipe; accelerating pipes, pressure atomizing nozzles and multi-hole gas spray nozzles are arranged in the gas-liquid reactor; a gas outlet is formed in the top of the gas-liquid reactor; the communicating pipe is cylinder-shaped; the centers of the cross sections of the communicating pipe, the gas-liquid reactor and the liquid-liquid reactor are on a same central axis; guide cylinders and an ultrasonic generator are arranged in the liquid-liquid reactor; a feed opening II and a feed opening III are formed in the two side walls of the liquid-liquid reactor, and are communicated with the guide cylinders respectively; a material enters the reactor through the guide cylinders; the guide cylinders are arranged symmetrically on the two sides of the liquid-liquid reactor by adopting the middle of the liquid-liquid reactor as the symmetric line; stirring paddles are arranged in the guide cylinders; the ultrasonic generator is arranged at the bottom of the liquid-liquid reactor; a discharge opening is formed in the bottom of the liquid-liquid reactor. The impinging stream reactor has a wide application prospect in gas-liquid and liquid-liquid reaction, particularly in a preparation process for aluminum oxide dry rubber.

Description

technical field [0001] The invention relates to an impingement flow reactor, in particular to an impingement flow reactor for preparing alumina dry glue. Background technique [0002] At present, pseudo-boehmite is mainly prepared by industrial aluminum hydroxide dissolved in acid and then reprecipitated with ammonia water or other alkalis in China. This method has complex production process, requires anti-corrosion equipment and consumes expensive chemical raw materials. In China, the cost of hydrolysis of organoaluminum compounds produced by other industrial by-products is much lower. In view of the fact that domestically produced pseudo-boehmite cannot compete with foreign countries in price, it is very valuable to research and develop cheap preparation routes and methods. [0003] CN85100161A discloses a kind of " carbonic acid process (CO 2 method) to produce pseudo-boehmite, which uses the intermediate product-industrial sodium aluminate solution as a raw material, ...

Claims

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Application Information

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IPC IPC(8): C01F7/14
CPCC01F7/142
Inventor 吕振辉薛冬彭绍忠张学辉高玉兰徐黎明
Owner CHINA PETROLEUM & CHEM CORP
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