Two-stage reactor and process for conversion of solid biomass meterial
A biomass material and reactor technology, applied in the field of two-step method, can solve the problems of high cost, expensive catalyst, increased investment and operating cost, etc.
Inactive Publication Date: 2013-09-18
KIOR INC
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Problems solved by technology
While these low-value products can be upgraded to higher-value products (e.g., conventional gasoline, jet fuel), upgrading requires specialized and / or expensive conversion methods and / or refineries, unlike conventional petroleum-based conversion methods and Refiners are different and incompatible
The widespread use and implementation of biomass for the production of fuels and specialty chemicals presents many challenges as large-scale production facilities are not widely available and can be prohibitively expensive
In addition, existing methods may require extreme conditions (e.g., high temperature and / or pressure, expensive process gases such as hydrogen, which increase capital and operating costs), need expensive catalysts, low conversion efficiencies (e.g., incomplete conversion or no conversion of lignin-cellulosic and hemicellulosic materials), and / or poor product selectivity
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[0095] One embodiment of the present invention is described below with reference to the accompanying drawings, which are provided by way of example only. In this illustrative embodiment, the process is carried out in a two-stage reactor, wherein the first stage reactor operates as a fluidized bed reactor.
[0096] refer to figure 1 , shows a two-stage reactor comprising a first stage reactor 10 and a second stage reactor 20 . Biomass material 11 , transport gas 12 and deactivated catalyst particles 13 enter the first stage reactor 10 . In the first stage reactor 10 the transport gas 12 forms an expanded bed of deactivated catalyst particles 13 which are well mixed with the biomass material 11 . In the region 14 of the first stage reactor 10, the transport gas 12 undergoes an acceleration due to the conical shape of the first stage reactor in this region.
[0097] At injection point 22 , regenerated catalyst particles 62 are injected into second stage reactor 20 .
[0098] ...
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Abstract
A two-stage reactor is disclosed for the conversion of solid particulate biomass material. The reactor is designed to maximize conversion of the solid biomass material, while limiting excess cracking of primary reaction products. The two-stage reactor comprises a first stage reactor, in which solid biomass material is thermally pyrolyzed to primary reaction products. The primary reaction products are catalytically converted in a second stage reactor.
Description
technical field [0001] The present invention generally relates to improved methods and apparatus for converting solid particulate biomass material into gaseous and liquid products. More specifically, some aspects of the invention relate to a two-step approach. technical background [0002] Biomass, especially of plant origin, is considered to be an ample potential source of fuels and specialty chemicals. Refined biomass feedstocks such as vegetable oils, starches, and sugars can essentially be converted into liquid fuels including biodiesel (such as methyl or ethyl esters of fatty acids) and ethanol. However, the use of refined biomass feedstock for fuel and specialty chemicals diverts food resources from animal and human consumption, creating economic and ethical concerns. [0003] Alternatively, non-edible biomass could be used to produce liquid fuels and specialty chemicals. Examples of non-edible biomass include agricultural waste (such as bagasse, straw, corn stover,...
Claims
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IPC IPC(8): B01J8/18
CPCB01J23/90B01J29/90B01J38/12C10B49/22C10B53/02C10B57/18C10G2300/1011C10G2300/1014C10G2300/4081C10G2300/4093Y02T50/678Y02P20/145Y02P30/20Y02P20/133C10G1/002C10G1/02Y02E50/10B01J8/24B01J2208/00769
Inventor M·布拉迪R·L·科尔多P·洛佐斯D·施塔米尔斯
Owner KIOR INC