Methane and chlorine substitution reaction device and method

Abstract

Methane and chlorine substitution reaction device and method, comprising that the methane gas generation device is connected to the substitution reaction generation device through pipelines, and the substitution reaction generation device is connected to the reflux device through pipelines, and the substitution reaction generation device is provided with a chlorination device on an iron stand , the chlorination device is provided with a rubber stopper at the opening of the upper end of the large test tube, a syringe is inserted on the rubber stopper, and a partition is arranged in the middle of the upper end of the large test tube to divide the large test tube into an upper cavity and a lower cavity, and the left side of the large test tube There is a left branch pipe, the left branch pipe communicates with the upper chamber and the lower chamber body, the left three-way valve is arranged on the left branch pipe, and the right branch pipe is provided on the right side of the large test tube, and the right branch pipe communicates with the upper chamber body and the lower chamber body And the lower end of the right branch pipe stretches into the bottom of the large test tube, the right branch pipe is provided with a right three-way valve, and the large test tube is connected with the left branch pipe and the right branch pipe.

Description

technical field [0001] The invention belongs to the technical field of chemical methods or equipment, and in particular relates to a methane and chlorine substitution reaction device and method. Background technique [0002] At present, the methane and chlorine substitution reaction device commonly used in middle school chemical experiments is to use a graduated cylinder and a water tank. When using it, first fill the graduated cylinder with water, put it upside down in the water tank, then pass in methane to discharge part of the water, and then pass in chlorine gas to discharge the remaining part of the water. The specific amount of discharged water is determined according to the amount of methane and chlorine gas required, and then the reaction is performed under sunlight, and the reaction is terminated after a certain period of time. But this reaction device mainly has the following problems in the use process: the device is relatively heavy, it is inconvenient for the t...

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Problems solved by technology

But this reaction device mainly has the following problems in the use process: the device is relatively heavy, it is inconvenient for the teacher to carry it in class, and it is not easy to move at any time to observe the experimental phenomenon; the consumption of reagents is large, and the water tank is useful in the device. The amount of salt water is large, which is a serious waste compared to the main reaction. Once the reaction occurs, all the salt water will be polluted; the reaction device is a semi-open system, and the environmental protection effect is poor. If repeated tests are required, chlorine gas will leak out and cause environmental pollution; The use of this device requires relatively high proficiency, and it is easy to cause air to enter and affect the experimental effect; the reaction rate of the methane and chlorine substitution reaction is relatively slow in ordinary environments, and it is difficult to produce the desired experimental results in a short period of time in the classroom. Affects classroom teaching; in the specific operation process, in order to fill the inverted test tube with saturated salt solution, the hands must touch the solution, and then use other instruments to easily cause salting out and pollution

But this reaction device mainly has the following problems in the use process: this reaction device is more loaded down with trivial details equally, and utensil is too many, and assembly and disassembly are inconvenient; The saturated salt water that this device consumes is more, causes waste

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