三乙胺對環(huán)境的主要影響:
Three main effects of ethylamine on the environment:
1)三乙胺又名三乙基胺,分子式為C6H15N,三乙胺屬大氣中有害污染物。美國政府將其列入新清潔空氣法(Clean Air Act)中189種優(yōu)先控制的大氣有害污染物之一[2]。
1) three ethylamine, also known as three ethylamine, has a molecular formula of C6H15N, and three ethylamine is a harmful pollutant in the atmosphere. The United States government listed it as one of the 189 priority air pollutants in the Clean Air Act, [2].
2)三乙胺具有強(qiáng)烈的氨臭味、有刺激性、易燃、易揮發(fā)。50ppm濃度的三乙胺就可使人產(chǎn)生嚴(yán)重的肺刺激癥狀[3]。
2) three ethylamine has strong ammonia odor, irritating, flammable and volatile. 50ppm concentration of three ethylamine can cause severe lung irritation symptoms [3].
三乙胺廢氣處理設(shè)備工作原理:由于三乙胺廢氣呈堿性,因此采用磷酸與其發(fā)生中和反應(yīng)生成三乙胺磷酸鹽,達(dá)到凈化作用。化學(xué)方程式為:(CH3CH2)3N+H3PO4→(CH3CH2)3N?H3PO4<三乙胺磷酸鹽>。因三乙胺在水中的溶解度大,經(jīng)過充分的實(shí)踐,選用2%-4%的噴淋狀態(tài)下的稀磷酸溶液為中和吸收液,處理效果最佳。
Three ethylamine waste gas treatment equipment working principle: because three ethylamine waste gas is alkaline, so the use of phosphoric acid and the reaction to produce three ethylamine phosphate, to achieve purification. The chemical equation is: (CH3CH2) 3N + H3PO4 > (CH3CH2) 3N? H3PO4< three ethylamine phosphate >. Because the solubility of three ethylamine in water is great, after full practice, the solution of 2% to 4% of the dilute phosphoric acid under the spray state is selected as the neutralization absorption solution, and the treatment effect is the best.
處理三乙胺廢氣工藝流程,整個(gè)系統(tǒng)在風(fēng)機(jī)的動力作用下,通過吸塵罩及管道將冷芯盒射芯機(jī)內(nèi)及其周圍的廢氣收集進(jìn)入均壓箱均壓后,再進(jìn)入砂塵分離器去除砂粒和其它異物,出氣再經(jīng)過凈化塔內(nèi)布?xì)馄骶鶆蜻M(jìn)入塔內(nèi),與通過噴淋裝置產(chǎn)生的二道逆流磷酸酸霧充分接觸,發(fā)生化學(xué)反應(yīng)。凈化塔內(nèi)的磷酸酸液充分吸收了廢氣,去除三乙胺廢氣,凈化后的氣體向上,進(jìn)入塔體上部以填料球組成的脫液層脫去水份后經(jīng)煙囪排入大氣。
The process flow of three ethylamine waste gas is treated. The whole system, under the power of the fan, collects the exhaust gas in the core box and around the cold core box and enters the pressure box, then enters the sand dust separator to remove the sand and other foreign objects, and then purify the Taneb gas device and enter the tower evenly. The two countercurrent phosphoric acid mist produced by the spray device is fully exposed to chemical reaction. The phosphoric acid in the purifying tower fully absorbs the waste gas and removes the waste gas of three ethylamine. The gas after the purification goes up to the upper part of the tower to remove the water from the deliquid layer, which is made up of the packing ball, and then into the atmosphere through the chimney.