【摘要】：四氯化鈦是生產鈦材和電子封裝的重要原料,采用熔鹽氯化工藝,生產過程中因凈化氯化爐出口的細粒粉塵,會產生含有約7%的四氯化鈦懸浮液,具有很高的回收價值。由于四氯化鈦懸浮液中含有高濃度的氯氣,而氯氣與空氣中的水份結合產生鹽酸煙氣,對環(huán)境產生嚴重污染,是四氯化鈦生產中存在的一個嚴重問題。本課題選用臥式螺旋卸料沉降型離心機來來分離四氯化鈦懸浮液,采用氣封式密閉型特殊的結構型式,有效解決了四氯化鈦懸浮液在固液分離中四氯化鈦泄漏的難題。本文以四氯化鈦懸浮液為分離物料獨立完成了LW-450氣封密閉式臥螺離心機工藝設計,總體結構設計,計算校核相應結構附件的強度并繪制總裝配圖和零部件圖。通過對設計試制的樣機在工廠現(xiàn)場的應用研究表明,樣機能滿足四氯化鈦生產工藝,設備能連續(xù)自動分離,分離后的泥餅可回到氯化爐中回收使用,分離后的清液幾乎不含固相粉塵。在處理能力3立方米/時的條件下運行時,離心機的轉速為1800r/min,得到的分離液的含固率在0.2%左右,已經達到了進入下一道生產工序的要求。其采用的氮氣密封效果良好,沒有氣體外泄,有效地解決了四氯化鈦泥漿懸浮液在固液分離中四氯化鈦泄漏的難題,說明設計是成功的。經過一年多的穩(wěn)定運行,使用廠減少了分離工段的操作人員16人,減輕了勞動強度,提高了自動化生產程度,消除了對環(huán)境的污染,具有很好的經濟和社會效益。
[Abstract]:Titanium tetrachloride is an important raw material for titanium production and electronic packaging. By using molten salt chlorination process, due to the purification of fine dust from the outlet of chlorination furnace, about 7% titanium tetrachloride suspensions will be produced during the production process, which has a high recovery value. Due to the high concentration of chlorine in titanium tetrachloride suspensions and the combination of chlorine gas with water in air to produce hydrochloric acid fume, it is a serious problem in the production of titanium tetrachloride that the environment is seriously polluted. In this paper, horizontal spiral discharge centrifuge is used to separate titanium tetrachloride suspensions, and a special structure type is adopted to solve the leakage problem of titanium tetrachloride suspensions in solid-liquid separation. Using titanium tetrachloride suspension as the separation material, the process design of LW-450 gas seal closed horizontal centrifuge is carried out, the overall structure is designed, the strength of the corresponding structural accessories is calculated and the total assembly drawing and parts drawing are drawn. The application of the prototype designed and manufactured in the factory field shows that the prototype can meet the production process of titanium tetrachloride, the equipment can be separated continuously and automatically, and the separated mud cake can be recycled back to the chlorination furnace. The separated liquid almost contains no solid dust. Under the condition of processing capacity of 3 cubic meters / hour, the speed of centrifuge is 1800 r / min, and the solid content of the separation liquid is about 0.2%, which has reached the requirement of entering the next production process. Its nitrogen sealing effect is good and there is no gas leakage. It effectively solves the problem of titanium tetrachloride leakage in solid-liquid separation of titanium tetrachloride slurry suspension. It shows that the design is successful. After more than a year of steady operation, the plant has reduced the number of operators in the separation section by 16 people, reduced the labor intensity, improved the degree of automation production, eliminated the pollution to the environment, and has good economic and social benefits.
【學位授予單位】：浙江工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TQ134.11;TQ051.84

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