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公开(公告)号：US20050069974A1
公开(公告)日：2005-03-31
申请号：US10498776
申请日：2002-12-16
申请人： Oleg Gladkov , Rodion Poloskin , Yuri Polyakov , Irina Sokolova , Nicolay Sorokin , Aleksey Glebov
发明人： Oleg Gladkov , Rodion Poloskin , Yuri Polyakov , Irina Sokolova , Nicolay Sorokin , Aleksey Glebov
摘要： Humic acid salts are produced, with a high output of useful products, by a liquid-phase oxidation of the mixture of an alkaline agent with a lignin-containing plant raw material having the total content of dry substances of 12-20%, said oxidation being carried out in two stages. In a first stage, pre-oxidation is carried out at a temperature of 50-190 DEG C. and a pressure of 0.5-3 MPa associated with simultaneous treatment with an oxygen-containing gas until a pH of 10.5-12 is reached. The second stage, i.e. oxidation is carried out in the similar conditions at a temperature of 170-200 DEG C. until a pH of 8.5-10 is reached. The by-product of cellulose production by a sulphite process, i.e. concentrated solutions of lignosulphonate or lignin is used as a lignin-containing plant raw material, said lignin being a by-product of hydrolysis production being continuously oxidised by air oxygen in two stages. In order to additionally activate the mixture of the raw material with alkali, operating in cavitation mode, a circulation pump provided with an ejector for stream ejection of air is used. In order to reduce the pre-oxidation time, the first stage can be carried out using peroxide, or by supplying the raw material and alkali directly to a pipeline prior to an ejector and the mixture thereof with an oxidising agent.
摘要翻译： 通过将碱性物质与含有干物质总含量为12-20％的含木质素的植物原料的混合物进行液相氧化，产生具有高产量有用产物的腐殖酸盐，所述氧化 分两个阶段进行。 在第一阶段中，预氧化在50-190℃的温度和0.5-3MPa的压力下进行，同时用含氧气体处理直至达到10.5-12的pH。 第二阶段，即在类似的条件下，在170-200℃的温度下进行氧化，直至pH达到8.5-10。 使用亚硫酸盐法生产纤维素的副产物，即木质素磺酸盐或木质素的浓缩溶液作为含木质素的植物原料，所述木质素是水解产物的副产物，由两个阶段的空气氧持续氧化。 为了额外地激活原料与碱的混合物，在空化模式下操作，设置有用于空气流喷射的喷射器的循环泵。 为了减少预氧化时间，第一阶段可以使用过氧化物，或者在喷射器之前将原料和碱直接供给到管道，并且与氧化剂的混合物进行。
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