生物质化学工程
生物質化學工程
생물질화학공정
BIOMASS CHEMICAL ENGINEERING
2014年
3期
48-52
,共5页
马占相思%栲胶%工艺
馬佔相思%栲膠%工藝
마점상사%고효%공예
Acacia mangium%tannin%technology
研究了马占相思栲胶主要生产工序的工艺参数。结果得出:马占相思栲胶浓胶在20℃时的波美度( y,oBé)与浓度(x,kg/L)的关系式为:y=1.2+40x。不同温度(T,℃)下,实测波美度(y')换算为20℃时的波美度(y,oBé)与温度的关系式为:y=y'+(T-20)/15;浸提工艺:马占相思树皮400 g,吸水率210%,头步加水1200 mL,以后每步加水800 mL,浸提首罐温度100℃,尾罐温度128℃,浸提时间12 h,添加焦亚硫酸钠量助浸为气干原料质量的1.8%,栲胶得率为81.9%,单宁得率为90.6%。磺化工艺:在85℃下,添加焦亚硫酸钠(Na2S2O5)量为栲胶绝干质量的6%,反应时间为2 h,磺化后得栲胶产品的单宁含量为67.8%,不溶物为3.2%,pH值为4.5,总色度为9.6。其他工艺同杨梅栲胶生产工艺。
研究瞭馬佔相思栲膠主要生產工序的工藝參數。結果得齣:馬佔相思栲膠濃膠在20℃時的波美度( y,oBé)與濃度(x,kg/L)的關繫式為:y=1.2+40x。不同溫度(T,℃)下,實測波美度(y')換算為20℃時的波美度(y,oBé)與溫度的關繫式為:y=y'+(T-20)/15;浸提工藝:馬佔相思樹皮400 g,吸水率210%,頭步加水1200 mL,以後每步加水800 mL,浸提首罐溫度100℃,尾罐溫度128℃,浸提時間12 h,添加焦亞硫痠鈉量助浸為氣榦原料質量的1.8%,栲膠得率為81.9%,單寧得率為90.6%。磺化工藝:在85℃下,添加焦亞硫痠鈉(Na2S2O5)量為栲膠絕榦質量的6%,反應時間為2 h,磺化後得栲膠產品的單寧含量為67.8%,不溶物為3.2%,pH值為4.5,總色度為9.6。其他工藝同楊梅栲膠生產工藝。
연구료마점상사고효주요생산공서적공예삼수。결과득출:마점상사고효농효재20℃시적파미도( y,oBé)여농도(x,kg/L)적관계식위:y=1.2+40x。불동온도(T,℃)하,실측파미도(y')환산위20℃시적파미도(y,oBé)여온도적관계식위:y=y'+(T-20)/15;침제공예:마점상사수피400 g,흡수솔210%,두보가수1200 mL,이후매보가수800 mL,침제수관온도100℃,미관온도128℃,침제시간12 h,첨가초아류산납량조침위기간원료질량적1.8%,고효득솔위81.9%,단저득솔위90.6%。광화공예:재85℃하,첨가초아류산납(Na2S2O5)량위고효절간질량적6%,반응시간위2 h,광화후득고효산품적단저함량위67.8%,불용물위3.2%,pH치위4.5,총색도위9.6。기타공예동양매고효생산공예。
Acacia mangium tannin extract is a new tannin variety developed in recent years. The process parameters of A. mangium tannin extract are studied in this paper. The results show thas the relation of the baume degree ( y,oBé) and concentration (kg/L) at 20 ℃ is: y =1. 2 +40x. And the relation of the baume degree(y) and concentration at different temperature(y’) is:y=y’+(T-20)/15. Extraction process was that 400 g of A. mangium barks with water absorption rate of 210% were extracted with 1 200 mL water and then 800 mL of water in the following steps. First digestion extract temperature is 100℃, and last digestion extract temperature is 128℃. The extract time is 12 h, sodium pyrosulfite which is 1. 8% of gas dried materials weight is added. The yield of tannin extract is 81. 9%, and the sield of tannins is 90. 6%. Sulfonation process is that sodium pyrosulfite ( Na2 S2 O5 ) which is 6% of extract solution oven dried weight is added, and the reaction is carried on at 85℃for 2 h. The tannin content of sulphonated tannin extract is 67. 8%, insoluble content is 3. 2%, pH value is 4. 5, and Lovibond color is 9. 6. Other processes are the same as Waxberry tannin extracts production.