本文選題：四川盆地 + 早寒武世�。� 參考：《天然氣工業(yè)》2016年03期

【摘要】：四川盆地中部磨溪區(qū)塊下寒武統(tǒng)龍王廟組氣藏天然氣凈化廠年處理能力達(dá)100×10~8m~3,為了實(shí)現(xiàn)污水零排放,該廠引進(jìn)了具備污水回收率高、工藝流程簡單、運(yùn)行連續(xù)化、自動化程度高等優(yōu)點(diǎn)的多效真空蒸發(fā)結(jié)晶裝置,其設(shè)計(jì)處理鹽水能力為300m~3/d,年生產(chǎn)時(shí)間為8 000 h。為了確保裝置一次性順利投產(chǎn),根據(jù)該蒸發(fā)結(jié)晶裝置工藝流程的特點(diǎn),制訂了快捷、經(jīng)濟(jì)的析鹽試運(yùn)行方案,開展了熱態(tài)投料聯(lián)動帶負(fù)荷析鹽試運(yùn)行。結(jié)果表明:①各效蒸發(fā)室料液的溫度、蒸發(fā)室的壓力是裝置平穩(wěn)運(yùn)行的關(guān)鍵參數(shù),需結(jié)合主蒸汽閥門開度、水環(huán)真空泵抽真空度及不凝氣閥門開度來進(jìn)行綜合調(diào)試;②各效蒸發(fā)室液位必須控制在45%以上,以防止料液循環(huán)泵被燒壞;③采取根據(jù)排鹽與否調(diào)整料液取樣時(shí)機(jī)、根據(jù)取樣結(jié)果調(diào)整取樣頻次的辦法,可防止排鹽不及時(shí)引起的料液循環(huán)泵過載,以及停止排鹽不及時(shí)引起的排鹽系統(tǒng)空載現(xiàn)象;④試運(yùn)行初期以Ⅰ效加熱室蒸汽進(jìn)出口溫差判定蒸汽流量大小更為準(zhǔn)確,提出的現(xiàn)場操作注意事項(xiàng)可規(guī)避Ⅱ效蒸發(fā)室壓力過載及料液循環(huán)管被抽空的風(fēng)險(xiǎn)。結(jié)論認(rèn)為:該裝置試運(yùn)行獲得成功,實(shí)現(xiàn)了快捷、經(jīng)濟(jì)析鹽,僅10 h便成功實(shí)現(xiàn)析鹽、排鹽,耗鹽量由23 t縮減為10t。
[Abstract]:The natural gas purification plant of the Lower Cambrian Longwangmiao formation gas reservoir in Moxi block, central Sichuan Basin, has an annual treatment capacity of 100 脳 10 ~ (8) m ~ (-1) m ~ (3). In order to realize zero discharge of sewage, the plant has introduced a high recovery rate of sewage, simple technological process and continuous operation. A multi-effect vacuum evaporative crystallization device with high degree of automation is designed to treat saltwater with a capacity of 300 mm2 / d and an annual production time of 8 000 h. In order to ensure that the unit is put into production at one time, according to the characteristics of the process flow of the evaporative crystallization unit, a quick and economical scheme of salt separation trial operation has been worked out, and the test operation of salting out with hot feeding linkage belt load has been carried out. The results show that the temperature of feed and the pressure of evaporation chamber are the key parameters for the steady operation of the unit. It is necessary to combine the opening degree of main steam valve, the vacuum degree of water ring vacuum pump and the opening degree of uncondensed gas valve to conduct comprehensive adjustment. (2) the liquid level of each effect evaporation chamber must be controlled above 45%, in order to prevent the circulating pump from burning out, the sampling time should be adjusted according to the salt discharge or not, and the sampling frequency should be adjusted according to the sampling result. It can prevent the overload of circulating pump caused by not discharging salt in time, and the no-load phenomenon of desalination system caused by stopping salt discharge in time. It is more accurate to judge the size of steam flow by using the temperature difference of steam inlet and outlet of the first effect heating chamber in the early stage of trial operation. The points for attention in the field operation can avoid the risk of pressure overload in effect 鈪，

本文編號：2012070