| Patents for D21C 7 - Digesters (1,988) |
|---|
| 06/08/2011 | CN102086609A Sulfate pulping process by mixing soft wood with hard wood |
| 06/08/2011 | CN101451326B Un-bleaching pulp prepared by ammonium sulfite steam cooking wheat straw raw material, preparation method and use thereof |
| 06/08/2011 | CN101265608B Bleaching and heating process and bleaching heating equipment in cellulose viscose pulp production |
| 06/07/2011 | CA2599033C Method for determining chemical pulp kappa number with visible-near infrared spectrometry |
| 06/03/2011 | WO2011066189A1 Method and system for thin chip digester cooking |
| 06/03/2011 | CA2778650A1 Method and system for thin chip digester cooking |
| 05/26/2011 | US20110120663 Method and system for thin chip digester cooking |
| 05/26/2011 | US20110120662 Method and equipment for treatment of black liquor at pulp mill |
| 05/25/2011 | EP2324153A1 A single vertical atmospheric vessel for steaming, slurrying, impregnating and digesting fibrous material |
| 05/18/2011 | EP1523594B1 A method and a digester for the continuous cooking of wood raw material to cellulose pulp |
| 05/18/2011 | CN201835172U Two-section type lignin cooking-separating device |
| 05/18/2011 | CN201835171U Non-wood fiber continuous cooking device |
| 05/18/2011 | CN101054777B Hardwood alkaline pulping processes and systems |
| 05/12/2011 | WO2011056137A1 System and method for the pumped feed of chips to a continuous digester |
| 05/05/2011 | US20110104044 Direct synthesis of aqueous hydrogen peroxide solution at the site of a paper mill |
| 05/04/2011 | CN101250831B Method for producing cattle manure paper-pulp using cattle manure as raw material |
| 04/27/2011 | CN102037182A Feeding system comprising parallel pumps for a continuous digester |
| 04/27/2011 | CN102037181A Feeding system comprising pumps in parallel for a continuous digester |
| 04/26/2011 | US7931779 Screening apparatus and screen basket for screening pulp suspensions |
| 04/14/2011 | US20110083822 Feeding system comprising parallel pumps for a continuous digester |
| 04/13/2011 | CN102016165A Feeding system comprising parallel pumps for a continuous digester |
| 04/13/2011 | CN102016164A Feeding system comprising pumps in parallel for a continuous digester |
| 04/13/2011 | CN102016163A Feeding system comprising parallel pumps and individual flows for a digester |
| 04/13/2011 | CN101269510B Manufacturing technique for whitening type middle, high-density pressed-fibre board |
| 04/06/2011 | CN101158121B Process for manufacturing dissolved pulp by using ethanol, sulfate and acetic acid |
| 04/05/2011 | US7918967 Apparatus for decreasing scaling in digester systems |
| 03/31/2011 | US20110073266 Feeding system comprising pumps in parallel for a continuous digester |
| 03/24/2011 | US20110067833 Feeding system comprising parallel pumps and individual flows for a digester |
| 03/24/2011 | US20110067829 Maintenance of sulfur concentration in kraft pulp processes |
| 03/23/2011 | EP2297396A1 A method and an apparatus for controlling a flow of pulp suspension |
| 03/23/2011 | CN101987695A Feeding device of screw feeder |
| 03/23/2011 | CN101314924B Pulping paper-making process with zero discharge of sewage water |
| 03/10/2011 | US20110056642 Feeding system comprising pumps in parallel for a continuous digester |
| 03/02/2011 | CN101982607A Cooking agent for papermaking and pulping and preparation method thereof |
| 02/24/2011 | WO2011021968A1 Method and arrangement for adding treatment liquors to cellulose raw material in a continuous process using down flow vessels |
| 02/24/2011 | WO2010144693A3 Compact feed system and method for comminuted cellulosic material |
| 02/16/2011 | EP1969176B1 Method for controlling a process for the production of short-fibred cellulose pulp |
| 02/16/2011 | CN201746724U Starch on-line steaming and boiling device |
| 01/20/2011 | WO2011007369A1 High temperature lignin separation process |
| 01/20/2011 | CA2767201A1 High temperature lignin separation process |
| 01/19/2011 | CN101949104A Pulp batch cooking parameter optimization method |
| 01/12/2011 | CN201704574U Bamboo fiber digester |
| 01/11/2011 | US7867363 Continuous digester system |
| 01/05/2011 | EP2268862A1 Feeding system comprising pumps in parallel for a continuous digester |
| 01/05/2011 | EP2268861A1 Feeding system comprising pumps in parallel for a continuous digester |
| 01/05/2011 | CN101451327B Low brightness pulp prepared by alkaline steam cooking wheat straw raw material, preparation method and use thereof |
| 01/05/2011 | CN101100818B Pulping technique for straw fibre |
| 12/30/2010 | US20100326611 Vapour phase digester and a method for continuous cooking |
| 12/30/2010 | US20100326610 System and method for continuously treating biomass |
| 12/29/2010 | CN101565915B Process for producing enhanced wood fiber sponge |
| 12/29/2010 | CN101549518B Manufacturing method of medium- and high-density flame-retardant fiber board |
| 12/29/2010 | CN101235607B Method for producing natural antibacterial bamboo fiber |
| 12/23/2010 | WO2010147118A1 Apparatus for producing pulp and process for producing pulp |
| 12/22/2010 | CN101435164B Modified production process of paper making level sulphate wood pulp plate |
| 12/16/2010 | WO2010144693A2 Compact feed system and method for comminuted cellulosic material |
| 12/16/2010 | US20100314055 Compact feed system and method for comminuted cellulosic material |
| 12/16/2010 | CA2765165A1 Compact feed system and method for comminuted cellulosic material |
| 12/14/2010 | CA2409453C Arrangement for mounting a screen |
| 12/08/2010 | CN101906730A Non-wood fiber continuous cooking method and device |
| 12/08/2010 | CN101451328B Un-bleaching pulp prepared by alkaline steam cooking wheat straw raw material, preparation method and use thereof |
| 12/08/2010 | CN101165267B Pulping technique for straw fibre |
| 12/07/2010 | US7846298 Outlet device for a pressurized vessel having a combined radial bearing and hydraulic drive motor |
| 12/01/2010 | CN101899794A Green process for extracting fibers from plants |
| 12/01/2010 | CN101225620B Method for preparing high-whiteness chemical pulp and paper products thereof by using corn stalk |
| 11/24/2010 | CN201648838U Aluminum sulfate adding device for papermaking |
| 11/24/2010 | CN101352324B Sanitary paper prepared by cereal straw pulp and preparation method thereof |
| 11/23/2010 | US7837834 Method and device for the continuous cooking of pulp |
| 11/17/2010 | CN101100820B Method for producing Chinese red pine chemical pulp |
| 11/11/2010 | WO2010128904A1 High pressure sluice feeder |
| 11/11/2010 | WO2010128354A1 A method and a system for on-line optimization of a batch pulp digester |
| 11/10/2010 | EP2247781A2 System and method for preextraction of hemicellulose through using a continuous prehydrolysis and steam explosion pretreatment process |
| 11/10/2010 | CN101883892A Digester screen for a continuous cellulose pulp digester |
| 11/04/2010 | US20100276098 Digester screen for a continuous cellulose pulp digester |
| 11/03/2010 | CN101876154A Formula and production process of cotton pulp |
| 10/21/2010 | US20100263812 System and method for repulping of paper products and improvement of water quality with dipolar solvents and recovery |
| 10/20/2010 | EP2241670A1 Unobstructed low pressure outlet and elongated screen grid for a high pressure feeder |
| 10/20/2010 | CN101864686A Preparation method of apocynum pulp |
| 10/13/2010 | CN201605488U 木片制浆白液冷却喂料装置 Wood pulp white liquid cooling feeding device |
| 10/13/2010 | CN1974922B Method for producing chemical fiber pomace with fiber as raw material |
| 10/13/2010 | CN1974921B Method for producing bamboo pomace |
| 10/12/2010 | US7811416 Apparatus and process for digesting cellulosic material |
| 10/07/2010 | WO2010114470A1 System and method for the regulation of a continuous vapour phase digester |
| 10/07/2010 | WO2010114184A1 Continuous extraction apparatus |
| 09/29/2010 | CN101220565B Pulping method with zero discharge of sewage water |
| 09/23/2010 | US20100236733 Method and system to generate steam in a digester plant of a chemical pulp mill |
| 09/22/2010 | CN201588145U Wood chip pulping material feeding line metal separation apparatus |
| 09/22/2010 | CN201588144U Feeding buffer bin of cooking presoaking tower |
| 09/22/2010 | CN101289818B Process for preparing dissolved pulp by oxidative degradation of linters |
| 09/21/2010 | US7799173 Screen plates having diagonal slots with curved inlets for a digester |
| 09/09/2010 | US20100224335 Heat recovery from spent cooking liquor in a digester plant of a chemical pulp mill |
| 09/08/2010 | CN101824767A Heat recovery from spent cooking liquor in a digester plant of a chemical pulp mill |
| 09/01/2010 | CN101163832B Arrangement for feeding a slurry of chips and liquid |
| 08/26/2010 | WO2010058285A3 Methods and devices for continuous transfer of particulate and/or fibrous material between two zones with different temperatures and pressures |
| 08/25/2010 | EP2220290A1 Digester screen for a continuous cellulose pulp digester |
| 08/25/2010 | CN201560352U Impervious electrothermal evaporating pan |
| 08/19/2010 | WO2010092429A1 A system and a method for optimization of continuous digestion process |
| 08/19/2010 | CA2752470A1 A system and a method for optimization of continuous digestion process |
| 08/18/2010 | CN101809227A An apparatus for discharging pulp from a vessel, method of discharging pulp form a vessel and method of upgrading a pulp vessel |
| 08/11/2010 | CN101352296B Cutlery box produced by cereal straw pulp and preparation method thereof |
| 07/29/2010 | WO2010083601A1 Method and apparatus for conveying a cellulosic feedstock |