Method for producing activated coke without coal tar by utilizing vertical carbonization furnace

Abstract

The invention provides a method for producing activated coke without coal tar by utilizing a vertical carbonization furnace. The method comprises the following steps: preparing materials, grinding thematerials into powder, stirring, granulating, drying and carbonizing, wherein the materials comprise powder composed of coke powder, anthracite coal, coke coal, bituminous coal and asphalt, and a binding agent; the step of stirring comprises the steps of carrying out primary powder mixing, carrying out secondary powder mixing, and carrying out wet mixing; the wet mixing step comprises the following steps: adding a liquid solvent which accounts for 20 percent of the mixed powder into a mixing and kneading machine, and stirring to form a paste mixture; the step of drying comprises the steps ofstacking the granular blank into a material layer with the thickness which is not greater than 5 cm on a continuous conveyor belt. According to the method provided by the invention, the adding and mixing of a binding agent are divided into two steps including the secondary powder mixing and the wet mixing, and the dry powder is very easy to uniformly mix in advance, so that the uniform degree after mixing is relatively good; a solvent is added in the step of wet mixing and the problem that the binding agent is not uniformly mixed because the dry powder is blocked and agglomerated after water is added is avoided.

Description

technical field [0001] The invention relates to the technical field of active coke production, in particular to a method for producing activated coke without coal tar addition by using a vertical carbonization furnace. Background technique [0002] In the conventional process of the prior art, coal tar is usually used as a binder during batching, and the strength of the granular billet formed after granulation is very low. In order to carry out subsequent high-temperature carbonization, the prior art usually uses a rotary kiln for carbonization. In the above method, due to the structure of the rotary kiln, there is no tail gas or flue gas recovery and absorption preparation structure, which causes the tail gas generated by coal tar at high temperature in the rotary kiln to be discharged, and then incinerated after discharge. In this way, there are combustion products or incomplete The problem of polluting the environment. [0003] Due to the various defects of polluting the...

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Problems solved by technology

[0002] In the conventional process of the prior art, coal tar is usually used as a binder during batching, and the strength of the granular billet formed after granulation is very low. In order to carry out subsequent high-temperature carbonization, the prior art usually uses a rotary kiln for carbonization. In the above method, due to the structure of the rotary kiln, there is no tail gas or flue gas recovery and absorption preparation structure, which causes the tail gas generated by coal tar at high temperature in the rotary kiln to be discharged, and then incinerated after discharge. In this way, there are combustion products or incomplete The problem of polluting the environment

[0003] Due to the various defects of polluting the environment that coal tar exists, there are also patents to adopt other binders to replace coal tar, as described in the patent of CN02122951, a kind of forming agent or binding agent is proposed in this patent, and how does this forming agent The application in the production of activated coke, and what kind of process is used to produce coal tar is not mentioned or detailed in this patent

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