A recovery process and equipment for sulfur in ethyl chloride
An ethyl chloride, sulfur technology, applied in the direction of sulfur compounds, inorganic chemistry, chemical instruments and methods, etc., can solve the problems of side reactions, difficult removal of impurities, environmental pollution, etc.
Active Publication Date: 2017-12-15
HUBEI XIANLONG CHEM IND
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Problems solved by technology
This technology has the following disadvantages: 1. The impurities wrapped in the sulfur are difficult to remove, and there will be peculiar smell and side reactions when using recycled sulfur; 2. Chlorine-containing and sulfur-containing gases generated by the decomposition of organic matter during the separation of impurities , the work site environment is harsh, causing pollution to the environment; 3. The content of sulfur does not meet the requirements
Method used
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Embodiment 1
[0019] Throw 2000Kg of sulfur-containing ethyl chloride into the distillation kettle, lock the manhole after casting, fully open the valve of the evaporation pipe, open the cooling water valve of the condenser, open the jacket steam valve of the sulfur melting kettle, and control the jacket pressure to 0.3~0.4 MPa.
[0020] Observe the temperature of the distillation kettle. When the heating temperature is 110°C, use a pipe wrench to activate the stirring. After the stirring is completely activated, turn on the stirring and carry out precipitation. When there is little slip-out, start to add water dropwise. The dropwise addition time is 3 hours and the water volume is 300 L. After the dropwise addition, continue the distillation at 130-140°C until there is basically no distillate. The vacuum must be kept constant during the whole process. After the desolventization is completed, put the sulfur into the preheating tank;
[0021] Pump the sulfur in the preheating tank into the ...
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The invention provides a technology for recycling sulfur in ethyl chloride. The technology particularly comprises the steps that the ethyl chloride containing the sulfur is put into a distillation kettle, a steam pipe valve in the distillation kettle is completely opened, and steam is introduced into the distillation kettle; when the temperature in the distillation kettle is increased to 110 DEG C, stirring is started, desolvation is conducted, when condensate distillate flows out of a condenser, water is dropwise added, the speed for dropwise adding the water is 80-120 L / h, after the water is completely added, distillation is continuously conducted at 130 DEG C-140 DEG C till no condensate distillate exists, and then the mixture is transferred into a preheating tank; the mixture is preheated through the preheating tank and then pumped into a sublimation tank through a pump at the speed of 8 KL / h, water is completely evaporated, and organic gas is exhausted; a sealing flange of the sublimation tank is closed, the temperature is continuously increased to 444-450 DEG C, the condenser is opened, when the temperature is decreased to 50-100 DEG C, a discharge opening is opened, the sulfur flows out of the discharge opening, and recycling of the sulfur is completed. By means of the technology for recycling the sulfur in ethyl chloride, the sulfur content is 99.5% or above, and the sulfur is yellow in appearance and odorless.
Description
technical field [0001] The invention provides a technology and corresponding equipment for separating sulfur from ethyl chloride and removing organic matter, inorganic matter and odor contained in sulfur. Background technique [0002] Sulfur is composed of sulfur-containing organic matter, ethyl chloride, organic matter containing chlorine and sulfur (easy to decompose at high temperature), and inorganic impurities (mixed in sulfur). Sulfur recovery in this field uses different temperatures and different boiling points of impurities to separate and remove impurities. This technology has the following disadvantages: 1. The impurities wrapped in the sulfur are difficult to remove, and there will be peculiar smell and side reactions when using recycled sulfur; 2. Chlorine-containing and sulfur-containing gases generated by the decomposition of organic matter during the separation of impurities , The work site environment is harsh, causing pollution to the environment; 3, the c...
Claims
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IPC IPC(8): C01B17/027
CPCC01B17/027C01P2006/80
Inventor 杨晓勤林顺华张战利
Owner HUBEI XIANLONG CHEM IND