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Continuous reaction device and method for oxidative stabilization of coal pitch spheres

An oxidation non-melting, reaction device technology, applied in the direction of chemical instruments and methods, chemical/physical processes, etc., can solve the problems affecting the final product performance of the preparation process, the performance difference of different batches of products, and the inability to achieve continuous operation, etc., to achieve mechanical High efficiency and thermal efficiency, shortened oxidation time, good energy saving effect

Active Publication Date: 2018-12-07
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The most critical step in the process of preparing spherical activated carbon from coal tar pitch pellets is the oxidation and non-melting process. There may be differences in the performance of batches of products. The entire reaction process takes a long time and consumes a lot of energy, which seriously affects the subsequent preparation process and the performance of the final product.

Method used

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  • Continuous reaction device and method for oxidative stabilization of coal pitch spheres
  • Continuous reaction device and method for oxidative stabilization of coal pitch spheres
  • Continuous reaction device and method for oxidative stabilization of coal pitch spheres

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Chamber I is 0.9m long, 0.7m wide, and the filling height is 1.0m; Chamber III is 2.0m long, 1.4m wide, and the filling height is 1.0m; Chamber V is 2.5m long, 1.7m wide, and the filling height is 1.0m. , the chamber VI is a variable-diameter chamber, the length of the bottom section is 1.0m, the width is 0.9m, and the filling height is 0.7m. The diameter of the roller 6 is 20cm, the gap distance between the rollers 6 is 5cm, and the rotational angular velocity is 1.05rad / min, 0.35rad / min, 0.26rad / min, 0.21rad / min, 0.18rad / min, 0.53rad / min, respectively min. The air inlet temperatures of the three air inlets on the left side surface of the casing 7 of chamber I are 60°C, 100°C, and 140°C from top to bottom; the total air intake of chamber I is 16128m 3 / h, the air volume is 3226m 3 / h, return air volume is 12902m 3 / h; the coal tar pitch balls fell in chamber Ⅰ for 1 hour, and the temperature rose from room temperature to 140°C along the way. The air inlet temperatu...

Embodiment 2

[0035] Chamber I is 1.1m long, 0.8m wide, and the filling height is 1.1m; Chamber III is 2.1m long, 1.5m wide, and the filling height is 0.9m; Chamber V is 2.4m long, 1.6m wide, and the filling height is 1.0m. , the chamber VI is a variable-diameter chamber, the length of the bottom section is 1.1m, the width is 1.0m, and the filling height is 0.8m. The diameter of the roller 6 is 15cm, the gap distance between the rollers 6 is 6cm, and the rotation angular velocity is respectively 1.07rad / min, 0.37rad / min, 0.30rad / min, 0.25rad / min, 0.20rad / min, 0.55rad / min min. The air inlet temperatures of the three air inlets on the left side surface of the casing 7 of chamber I are 70°C, 110°C, and 150°C from top to bottom; the total air intake of chamber I is 16200m 3 / h, the air volume is 3300m 3 / h, return air volume is 12900m 3 / h; the falling process of the coal tar pitch balls in chamber Ⅰ lasted 1.1 h, and the temperature rose from room temperature to 150°C along the way. The ai...

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Abstract

The invention discloses a continuous reaction device and method for oxidative stabilization of coal pitch spheres. The continuous reaction device comprises a plurality of reaction chambers for oxidative stabilization reactions of coal pitch spheres from top to bottom, wherein the top of the uppermost reaction chamber is provided with a feed inlet; the bottom of the bottommost reaction chamber is provided with a discharge outlet; every two adjacent reaction chambers communicate with each other through a material sealing chamber; and each material sealing chamber is provided with a moving component used for controlling the falling speed of the coal pitch spheres so as to control the retention time of the coal pitch spheres in the reaction chambers. With such an arrangement manner, the continuous reaction device of the invention realizes the continuous operation of an oxidative stabilization process for coal pitch spheres and precisely controls the retention time of materials in differentstages of a reaction process; and cyclic temperature controlling and air supplying units can realize stepwise heating / constant-temperature air supply, so the coal pitch spheres and an air medium arein cross-flow contact, high mechanical efficiency and thermal efficiency are obtained, oxidation time is significantly shortened, the breakage rate of the coal pitch spheres is greatly reduced, and good energy saving effect is obtained.

Description

technical field [0001] The invention relates to a reaction device and method, in particular to a continuous reaction device and method for oxidizing and infusible coal tar pitch balls. Background technique [0002] Spherical activated carbon is a representative porous adsorption material with excellent properties such as highly developed pore structure, good fluidity, high mechanical strength, controllable pore size distribution, fast adsorption and desorption speed, and uniform packing density. In addition to the fields of petrochemical, pharmaceutical and environmental governance, it is also widely used in the fields of national defense and military industry and civilian high-tech. [0003] At present, the processing method of coal tar is mainly separation and purification, and the utilization of coal tar pitch accounting for more than 55% by weight of coal tar is limited to the production of modified pitch and carbon black with low added value. If coal tar pitch can be u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/18
CPCB01J8/1809B01J8/1818B01J8/1872B01J2208/00548B01J2208/00938B01J2208/065
Inventor 刘沁雯邵应娟刘雪娇钟文琪
Owner SOUTHEAST UNIV
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