摘要:
This invention provides methods and systems for the production of n-propanol and ethanol. Specifically, the methods and systems of the present invention use symbiotic co-cultures for the production of propanol from syngas.
摘要:
Processes are disclosed for the anaerobic bioconversion of syngas to oxygenated organic compound that use an in situ method for protecting the microorganisms from hydrogen cyanide contained in the syngas that passes to the fermentation broth. The fermentation broth is maintained at a pH of between about 4 and 6, and dissolved metal cation of one or more of iron, cobalt, nickel and zinc is provided to the fermentation broth in an amount sufficient to form, under the conditions of the fermentation broth, a substantially insoluble metal complex with the metal cation and cyanide anion. The rate of formation of the insoluble complex is sufficiently high that that the amount of cyanide that is taken up by microorganisms does not result in an undue adverse effect on the population of microorganisms.
摘要:
This invention provides methods and systems for the production of propanol. Specifically, the methods and systems of the present invention use symbiotic co-cultures for the production of propanol from syngas.
摘要:
A method is provided for managing key rotation (use of series of keys) and secure key distribution in over-the-top content delivery. The method provided supports supplying a first content encryption key to a content packaging engine for encryption of a first portion of a video stream. Once the first content encryption key has expired, a second content encryption key is provided to the content packaging engine for encryption of a second portion of a video stream. The method further provides for notification of client devices of imminent key changes, as well as support for secure retrieval of new keys by client devices. A system is also specified for implementing a client and server infrastructure in accordance with the provisions of the method.
摘要:
A method is provided for managing over-the-top delivery of content through a plurality of content delivery networks (CDN). The method provided works transparently with standard HTTP servers supporting an initial request for content from a client to a first preferred CDN. If the first CDN does not have the content, the method includes provisions for the first CDN to acquire the content from a second CDN, or for the client to request the content from a second CDN directly. A system is also specified for implementing a client and server infrastructure in accordance with the provisions of the method.
摘要:
A method of HCN removal from syngas including treating a hot syngas stream for conversion to chemical products by removing various components from the hot syngas stream by: passing the hot syngas stream to a scrubber; adding aldehyde to a circulating scrubber water; capturing ammonia and HCN in the circulating scrubber water and condensing water from the hot syngas stream into the circulating scrubber water; withdrawing a scrubber waste water effluent from the scrubber comprising absorbed ammonia, ammonium, and absorbed HCN, and glycol nitriles, formed from the reaction of the aldehydes with HCN, from the scrubber; withdrawing a treated syngas stream effluent from the scrubber having a reduced concentration of ammonia and HCN; and, passing at least a portion of the scrubber waste water effluent stream to a biological treatment zone for the removal of ammonia, absorbed HCN, and glycol nitriles.
摘要:
A method is provided for managing over-the-top delivery of content through a plurality of content delivery networks (CDN). The method provided works transparently with standard HTTP servers supporting an initial request for content from a client to a first preferred CDN. If the first CDN does not have the content, the method includes provisions for the first CDN to acquire the content from a second CDN, or for the client to request the content from a second CDN directly. A system is also specified for implementing a client and server infrastructure in accordance with the provisions of the method.
摘要:
A method for the high removal of ammonia, COS and HCN from syngas (along with some polishing of particulates) in a cost effective and environmentally benign and sustainable fashion, with the need for little to no chemical addition by using a combination of water based gas scrubbing, HCN scrubbing and biological processing steps.
摘要:
A stable system for producing liquid products such as ethanol, butanol and other chemicals from syngas components contacts CO or a mixture of CO2 and H2 with a hydrophilic membrane under anaerobic conditions and transfers these components into contact with microorganisms contained as a biofilm on the membrane. Maintaining the microorganisms as a biolayer on the surface of the membrane facilitates cleaning of the membrane surface that retains the biofilm. In addition the shell gas space that surrounds the membranes may be flooded to reduce or remove the biofilm. Agitation of the liquid, by for example the bubbling of gas in the surrounding shell space, can fully or partially remove the biofilm from the membrane.
摘要:
The present invention relates to use of high moisture, renewable feedstocks in integrated anaerobic digestion treatment (AD) and Syngas fermentation to alcohols and other soluble products. More specifically, the invention relates to use of high moisture, renewable feedstocks such as the organic fraction of municipal solid waste (OFMSW), biological waste sludge, source separated organics, green wastes such as FW from supermarkets, cafeterias, etc., and other such plentiful sources for power and fermentation, significantly increasing yield of a desired alcohol.Even for relatively large Syngas to ethanol (or other chemical) production facilities, such wastes could represent a significant fraction of needed resources for Syngas fermentation. The proper integration of the anaerobic digestion process, post treatment, and use of fractionated components are also believed to represent a considerable savings in overall production costs.