磷肥与复肥
燐肥與複肥
린비여복비
PHOSPHATE & COMPOUND FERTILIZER
2012年
5期
33-36
,共4页
磷酸浓缩%浓缩产能%运行周期%技术改造
燐痠濃縮%濃縮產能%運行週期%技術改造
린산농축%농축산능%운행주기%기술개조
phosphoric acid concentration%concentration capacity%running period%technical reform
针对全球磷矿资源贫化，浓缩装置产能、开车周期大幅下降的现状，对浓缩工艺进行改造：采取稀磷酸不过滤澄清，并经蒸汽预加热至80℃进入浓缩系统；在稀酸中添加抗沉积剂，减缓结垢；控制适宜浓缩磷酸浓度和优化石墨换热器结垢清洗工艺。改造后浓缩产能提升30％，运行周期达28～30d，提高DAP产量相当于年增产值3600万元，节约蒸汽费用14．2万元。
針對全毬燐礦資源貧化，濃縮裝置產能、開車週期大幅下降的現狀，對濃縮工藝進行改造：採取稀燐痠不過濾澄清，併經蒸汽預加熱至80℃進入濃縮繫統；在稀痠中添加抗沉積劑，減緩結垢；控製適宜濃縮燐痠濃度和優化石墨換熱器結垢清洗工藝。改造後濃縮產能提升30％，運行週期達28～30d，提高DAP產量相噹于年增產值3600萬元，節約蒸汽費用14．2萬元。
침대전구린광자원빈화，농축장치산능、개차주기대폭하강적현상，대농축공예진행개조：채취희린산불과려징청，병경증기예가열지80℃진입농축계통；재희산중첨가항침적제，감완결구；공제괄의농축린산농도화우화석묵환열기결구청세공예。개조후농축산능제승30％，운행주기체28～30d，제고DAP산량상당우년증산치3600만원，절약증기비용14．2만원。
For the deficiency and dilution of phosphate rock, the running period and running period of concentration process are decreased. Some measures are adopted including the dilute phosphoric acid is preheated to 80℃ and then delivered to concentration process without filtration and clarification; anti-deposition agent is added into phosphoric acid to reduce scaling; the concentrated phosphoric acid is controlled at proper concentration, and the washing process is optimized for graphite heat exchanger. After the reform, the capacity of concentration is increased by 30%, running period is prolonged to 28-30 d, production value of yield of DAP is increased with the value of 36 million RMB Yuan per year, the cost of steam is saved by 0.142 million RMB Yuan.
