Epoxy propane chlorohydrination tail gas and trichloroethylene workshop waste gas combined treatment process
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A technology of trichlorethylene and workshop waste gas, applied in the direction of joint combustion mitigation, chemical instruments and methods, incinerators, etc., can solve the problems of secondary pollution, high equipment investment, high fuel consumption cost, etc., and achieve fuel saving and high calorific value , The effect of saving equipment investment
Inactive Publication Date: 2019-04-16
BEFAR GROUP CO LTD +1
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Vented components are mainly ethylene, ethane, propylene, propane, dichloropropane, etc., which do not meet environmental protection requirements
[0003] The composition of the exhaust gas from the trichlorethylene plant is complex, the content of halogenated hydrocarbons is high, and it contains non-methane total hydrocarbons. When it is treated b
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Embodiment 1
[0036] A process for joint treatment of propylene oxide chloroalcoholization tail gas and trichlorethylene workshop waste gas, comprising the following steps:
[0037] The chloroalcoholization tail gas of the propylene oxide plant and the waste gas of the trichlorethylene plant are safely mixed.
[0038] The combined gas mixture is subjected to regenerative combustion.
[0039] Waste heat recovery and utilization of high-temperature flue gas after combustion.
[0040] The low-temperature flue gas after combustion is neutralized and discharged after reaching the standard.
[0041] The waste gas from the trichlorethylene workshop is treated with primary and secondary alkali washing to avoid corrosion to subsequent pipelines and equipment, and is transported through the waste gas conveying fan. Since the waste gas contains organic combustible gases such as non-methane total hydrocarbons, A small amount of nitrogen is added to the root of the outlet pipe of the fan to dilute the...
Embodiment 2
[0056] For the convenience of understanding, the present invention also provides corresponding device schematic diagrams for the treatment process provided in the above-mentioned embodiment 1, as figure 1 As shown, the combined treatment device for propylene oxide chloroalcoholization tail gas and trichlorethylene workshop exhaust gas provided in this embodiment includes the first stage of air intake, the second stage of alkali washing tower, gas mixer, blower, regenerative combustion device, gas outlet Primary and secondary alkali washing towers, induced draft fans, waste heat boilers.
[0057] The beneficial effects of the present invention are:
[0058] 1. Realized the environmental protection standard discharge of the two sets of devices.
[0059] 2. Taking advantage of the high calorific value of the chloroalcoholization tail gas of propylene oxide, at the same time burning off the waste gas from the trichlorethylene workshop, saving a lot of fuel.
[0060] 3. The exhau...
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Abstract
The invention discloses an epoxy propane chlorohydrination tail gas and trichloroethylene workshop waste gas combined treatment process. The epoxy propane chlorohydrination tail gas and trichloroethylene workshop waste gas combined treatment process is characterized by comprising the following steps that alkaline washing treatment is firstly performed on trichloroethylene workshop waste gases through a first-grade alkaline washing tower and a second-grade alkaline washing tower; then a small amount of nitrogen gas is added in the trichloroethylene workshop waste gases after the alkaline washing treatment; then the trichloroethylene workshop waste gases are mixed with epoxy propane chlorohydrination tail gases added with the nitrogen gas; the mixed waste gases are made to pass through an LEL combustible gas on-line monitoring instrument to prevent organic gas concentration fluctuation; then the measured mixed waste gases are introduced into a filter to remove particles inside the mixedwaste gases; then air is added in the filtered waste gases to reduce the concentration of the mixed waste gases; and then the mixed waste gases added with the air are made to pass through a waste gasfan and a back-fire relief valve. By means of the epoxy propane chlorohydrination tail gas and trichloroethylene workshop waste gas combined treatment process, the environmental protection problem caused by emission of the epoxy propane chlorohydrination tail gases and the trichloroethylene workshop waste gases is thoroughly solved, and recycled heat creates benefits.
Description
technical field [0001] The invention relates to the technical field of regenerative combustion of organic gases, in particular to a process for joint treatment of propylene oxide chloroalcoholization tail gas and trichlorethylene workshop waste gas. Background technique [0002] At present, the chloroalcoholization tail gas produced by the domestic production process of propylene oxide chloroalcoholization adopts the method of venting. Vented components are mainly ethylene, ethane, propylene, propane, dichloropropane, etc., which do not meet environmental protection requirements. [0003] The composition of the exhaust gas from the trichlorethylene plant is complex, the content of halogenated hydrocarbons is high, and it contains non-methane total hydrocarbons. When it is treated by catalytic oxidation and direct combustion, the investment in equipment is high. In direct combustion, not only the cost of fuel consumption is high, but also it is easy to produce dioxins and Ni...
Claims
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