Present status
现状
7 hundred million tons per year in China 年产量7亿吨 Our aim
目标
Industrial materials 工业原料
CO2
3
Effects
Solving the environmental pollution and converting waste straw into useful materials 解决环境污染，变废为宝
秸秆生态生化工程研究进展
Present fractionation problems
目前组份分离存在的问题 Being short of effective pretreatment technique
缺少有效的预处理技术
Aiming at individual component
以单一组份利用为目标
中国能源战略发展的需要
4
Problems with industrialization
产业化过程中的难题
Cellulose 30-49% Ash 0—15%
In theory——feasible to convert
理论上是可行的
Hemicellulose 20-35% lignin 20—30%
水预浸
Cellulose
纤维素
Corresponding conversion system
相应转化系统 Exploiting application fields 拓展应用领域
Food processing Hemp processing Fruit processing
Establishment of ecological industry park of straw
Increasing farmer’s income and solving “SANNONG ” question (Agriculture-Country-Farmers)
增加农民收入，解决“三农”问题
Demands for strategic development of energy in China
秸秆生态生化工程研究进展
Problem in present fermentation technology
现有发酵工艺的问题 Submerged Fermentation
Traditional Solid State Fermentation
Easy to realize Pure culture Good applicability Much waste water produced High energy cost High production cost
Difficult to separate the individual component
单一组分分离困难
Pretreatment cost is high, reaction condition is severe
预处理成本高, 反应条件剧烈
Environmental problems caused by chemical reagents
水浸提汽爆麦草
Equipment for steam explosion
汽爆设备
12
Application of Ionic liquid in straw fractionation
离子液体在秸秆组份分离中的应用
OWS TOWS S-EWS TS-EWS WSP TWSP
120
Rate of enzyme hydrolysis (%)
化学试剂带来环境问题
8
Strategic considerations of fractioation
组份分离的策略考虑
Cellulose 38% hemicellulose 32% lignin 17% ash 13% cellulose 50% hemicellulose 26% lignin 24%
产业化
5
Strategies to solve the problems
解决问题的策略
Two key techniques
两个关键技术
New ideas of fractionation of straw
秸秆组份分离新思想
New-type solid state fermentation style
Component separation Problems of engineering science (technical economy)
工程科学问题 组分分离
Multilevel utilization
多级利用
Systematic integration
系统集成
Industrialization
组分分离的技术路线
Fractionation system Steam explosion without pollution
无污染汽爆
Water extraction
水提
Hemicellulose
半纤维素 组分分离体系
Ethanol extraction
乙醇提取
Lignin
木质素
Straw immersed in water
fermentation 固相酶解-液相发酵生产燃料乙醇
● Development of ecological industry of straw 秸秆生态生化工程研究进展
Introduction
Waste , animal feed and paper production
废弃物，饲料和 造纸材料
Achievements and cooperation
Owning 12 items of Chinese patent
获12项中国专利
14
CONTENTS 内容
Backgrounds for industrial utilization of straw
秸秆产业化应用的背景
New technology of fractionation of straw
Based on the difference in component and structure between straw and lumber
基于秸秆与木材组分、结构的不同
Develop a new technology
建立新工艺
9
Technical path of fractionation
Periodic time of pressure pulsation
Difficult to realize pure culture limited fermentation systems Little waste water produced Low energy cost Low costs of production
16
Strategic considerations of fermentation technology
秸秆组分分离新技术
New solid state fermentation (SSF) system for cellulase production 新型固态发酵纤维素酶体系
Fuel ethanol production by solid-state hydrolysis and liquid fermentation 固相酶解-液相发酵生产燃料乙醇 Development of ecological industry of straw
CONTENTS 内容
Backgrounds for industrial utilization of straw
秸秆产业化应用的背景
New technology of fractionation of straw
秸秆组分分离新技术 New solid state fermentation (SSF) system for cellulase production 新型固态发酵纤维素酶体系 Fuel ethanol production by solid-state hydrolysis and liquid fermentation 固相酶解-液相发酵生产燃料乙醇 Development of ecological industry of straw
Structural diagram of new SSF 结构示意图
Relative pressure(%)
internal circulation rate（m/s）
1.0 0.8 0.6 0.4 0.2 0.0
100
50
1
0 0
2
3
4
100
0
10
20
30
40
50
60
70
80
Fermentation time(h)
新型固态发酵发式
Integration of multi-techniques
多技术整合
Breakthroughs in both areas
Full utilization of
Formation of ecological industry of straw 生态工业
100 80 60 40 20 20 30 40 50 60 70
80
Enzyme hydrolysis time (h)
Fig.2 Enzymatic hydrolysis rates of sufficiently washed treated materials
图 充分水洗经处理材料的酶解率 OWS: original wheat straw (原小麦秸) ; TOWS: treated original wheat straw (处理的原小麦秸); SEWS: steam exploded wheat straw (汽爆小麦秸); TS-EWS: treated steam exploded wheat straw (经处 13 理的汽爆小麦秸); WSP: wheat straw pulp (小麦秸浆); TWSP: treated wheat straw pulp (经处理的小麦秸浆)