LignoBoost® is a patented lignin extraction process. 感谢不断的发展, the extracted lignin can be given properties that match the intended use.
LignoBoost与磨机完全集成. It is designed for a safe work environment with reliable extraction of high-quality lignin.
LignoBoost is a patented extraction process divided into two steps: a separation step, 接着是洗涤步骤. Dividing the extraction into two steps makes it possible to optimize the conditions in each step and produce a very high quality lignin. It also provides several options for adjusting the characteristics of the lignin. LignoBoost was initially developed by universities and research institutes, but has been commercialized and further developed by 世界杯足球买球.
The first step in the LignoBoost process is to separate the lignin from the mill’s black liquor. Black liquor is taken from the evaporation, and the pH is lowered with CO2 and gas from the second step of the LignoBoost process. When the pH drops, lignin precipitates and is separated from the liquor with a press filter. The output of the first step is LignoBoost crude lignin.
在第二步中，木质素被纯化. The crude lignin is washed in a low pH solution and then dewatered in a second filter press. The purity of the lignin is highly dependent on the conditions in the washing step. LignoBoost is engineered to produce a very pure lignin.
The filter presses have a major influence on the lignin extraction process and the quality of the extracted lignin. The current design of the filters and their operation is a result of 世界杯足球买球’s substantial experience in lignin extraction. The filters are engineered and fully integrated with the process’s two steps. 这导致了非常高的安全性和可靠性.
Lignin lean black liquor and wash water are returned to the evaporation plant. The flow of wash water is low and can normally be handled with only minor changes to the mill’s operation.
LignoBoost uses sulfuric acid to purify the lignin. Most of the sulfur in the acid is returned to the mill with the wash water and gas from the lignin extraction process.
世界杯足球买球’s sulfuric acid plant offers a good way to control the pulp mill’s sulfur balance. 世界杯足球买球 has built one sulfuric acid plant and has recently been awarded the contract for a second. To learn more about 世界杯足球买球’s sulfuric acid plant technology, see here.
世界杯足球买球’s LignoBoost technology ensures reliable and safe handling of all the flows related to lignin extraction. 这包括提取黑液, 返回酒, wash water, 从过程中提取化学物质和气体. 当黑液pH值降低时，H2S被释放, and this makes the gas handling systems an important part of a lignin extraction plant. 世界杯足球买球’s in-depth knowledge of the process reactions has resulted in several advanced gas handling solutions that are integrated with the LignoBoost technology and surrounding mill. LignoBoost为高安全性而设计.
The gas produced in the second step of the LignoBoost process is collected and used to reduce the pH of the incoming black liquor in the first step. This solution reduces the consumption of carbon dioxide in the first step and with it, 木质素提取的操作成本.
Excess gas from the LignoBoost process falls into the DNCG category of gases in a chemical pulp mill. This gas is collected and sent to the mill for destruction. 世界杯足球买球 has many solutions for safe gas handling in pulp mills.
Extracted lignin needs to be stored and packaged for easy transportation to the mill’s customers. 世界杯足球买球 can help design solutions and supply equipment like conveyors, 以及干燥和装袋系统, that ensure the simple and reliable handling of produced lignin.
Lignin is also an excellent fuel for the lime kiln. 世界杯足球买球 can supply modifications to the lime kiln burner and surrounding systems.
Many pulp mills can extract up to around 25 percent of the lignin without modifying the existing mill equipment. The Stora Enso Sunila mill is designed to produce 50,每年可生产000公吨木质素, 或者22%的木质素. 木质素精瘦黑液和水洗均可 像正常的黑液一样蒸发了, and if the production of pulp is increased and the mill’s energy consumption is reduced, 高达70%的木质素可以被去除.