Waste salt treating device and process

Abstract

The invention discloses a waste salt treating device. The waste salt treating device structurally comprises an industrial feeder, a multi-stage indirect heating furnace, a heat-conducting oil circulating system, a molten salt circulating system, an organic waste gas conveyor and a waste salt afterheat recycler. The invention further discloses a waste salt treating process. The waste salt treating process comprises the following steps: treating waste salt, circulating a heat-conducting oil working medium, circulating a hot-molten salt working medium, and treating hot air and tail gas. The waste salt treating device and the waste salt treating process can effectively meet an industrial waste salt refining requirement and solve the problem of tail gas emission; the whole process system is high in energy utilization efficiency and small in secondary pollution.

Description

technical field [0001] The invention relates to a device for treating waste, in particular to a device for treating waste salt. The invention also provides a process for using the device to treat waste salt. Background technique [0002] In the industrial field, many enterprises produce waste salt in the production process, especially in the field of fine chemicals. For example, in the production of diglyphosate and glyphosate, for every ton of glyphosate technical product produced, about 1.3 tons of waste sodium chloride salt containing various organic poisons will be produced; for example, in the production of AKD, for every ton of AKD produced, About 2 tons of waste sodium chloride salts containing organic matter are produced; for example, in the production of hydrazine hydrate, about 4 tons of waste sodium chloride salts are produced for every 1 ton of hydrazine hydrate produced. Due to the limitations of the production process, most of these waste salts are converted i...

AI Technical Summary

Problems solved by technology

Since the combustion adopts the method of direct ignition and combustion, the temperature of the high-temperature exhaust gas reaches 300 ° C ~ 500 ° C, and the exhaust gas is directly discharged, and the combustion efficiency is less than 70%.

Therefore, from the point of view of the heat demand required for the final heating and cracking of salt and the heat supply of the actual heat source consumed, the current thermal efficiency of the overall waste salt treatment process is still less than 30%.

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