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Methods and systems for supplying hydrogen to a hydrocatalytic reaction

A technology for hydrogenation catalysis and catalyst, which is applied in chemical instruments and methods, gasification catalysts, and catalytic treatment of combustible gases, etc., and can solve problems such as problems, complex engineering challenges, and high cost system downtime.

Inactive Publication Date: 2016-05-11
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While external hydrogen can be provided, this source of hydrogen is not helpful in reducing the carbon footprint of any final fuel product, such as when it is based on natural gas reforming
[0006] Additionally, in addition to the desired carbohydrates, other substances may be present within cellulosic biomass that may be particularly problematic to process in an energy and cost-effective manner
For example, during the treatment of cellulosic biomass, the presence of large amounts of lignin and / or lignin-derived compounds in the cellulosic biomass can lead to fouling of treatment equipment, potentially resulting in costly system downtime
Large amounts of lignin may also result in a relatively low conversion rate of cellulosic biomass per weight of feedstock to usable material
[0007] As previously demonstrated, the efficient conversion of cellulosic biomass into fuel mixtures and other substances is a complex problem with enormous engineering challenges

Method used

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  • Methods and systems for supplying hydrogen to a hydrocatalytic reaction
  • Methods and systems for supplying hydrogen to a hydrocatalytic reaction
  • Methods and systems for supplying hydrogen to a hydrocatalytic reaction

Examples

Experimental program
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Effect test

Embodiment 1

[0142] Example 1: A 100-ml Parr reactor was charged with 60.18 grams of deionized water solvent and 0.754 grams of a nickel oxide-promoted cobalt molybdate catalyst (DC-2534, 1–10% on alumina obtained from Criterion Catalyst & Technologies L.P. cobalt oxide and molybdenum trioxide (up to 30 wt%) and less than 2% nickel). The catalyst was sulfided using the method described in Example 5 of US Patent Application Publication No. 2010 / 0236988. About 5.05 grams of southern pine wood chips (39% moisture, nominal dimensions about 3mmx5mmx5mm) and about 0.195 grams of potassium carbonate buffer were added to the reactor, which was then pressurized with 54 bar of hydrogen under magnetic stirring. The stirred reactor was heated to 190°C for 1 hour. Subsequently, the reactor was heated to 250° C. for 5 hours, which was the end point of the cycle. A sample of approximately 1-2 grams of the mixed product was withdrawn at the end of the cycle through a 0.5 micron sintered metal dip tube w...

Embodiment 2

[0145] Embodiment 2: Repeat embodiment 1 with 60.06 grams of 25% ethanol in water as solvent and 0.749 grams of cobalt molybdate sulfide catalyst. The reactor was pressurized to 52 bar with hydrogen and heated to 190°C for 1 hour, then to 250°C for 3 hours, and then to 270°C for 2 hours. After 8 cycles with each addition of 6 grams of wood as described in Example 1 above, a viscous phase was observed to form inside the reactor. The viscous phase exhibits a viscosity greater than 1000 cP at room temperature. This phase was separated using liquid-liquid separation to yield a bottoms fraction. Analysis of the heavy bottoms fraction again indicated the presence of compounds boiling above the boiling point of n-butanol, including tetrahydrofurfuryl alcohol, methoxypropylphenol, and propylphenol. The total weight percent of species detected in the bottoms fraction was less than 100%, indicating the presence of higher molecular weight oligomers that could not elute from the heated ...

Embodiment 3

[0146] Example 3: Example 1 was repeated with 50% ethanol in water as solvent. After 10 cycles of chip addition as described in Example 1 above, a heavy viscous phase was observed coating the interior and bottom of the reactor with a viscosity greater than 10,000 cP. The wood additions included 6.05, 6.06, 6.06, 6.06, 6.01, 6.00, 6.01, 6.02, 6.06 and 6.06 grams to complete 10 cycles. After 10 cycles, at 52bar H 2 and 290°C for 5 hours, after which the viscosity of the lower layer was reduced to less than about 500 cP. High temperature hydrogen treatment resulted in increased formation of methoxyl and alkylphenols such that the weight percent of compounds observed in GC was more than 3 times that of similar phases formed in Example 2. The treated phase can be subjected to rectification to remove low volatility components elutable by the GC injector. The remaining bottoms fraction containing heavy components (which includes weight percents not seen in GC analysis) can be gasi...

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Abstract

A bottom fraction of a product of a hydrocatalytic reaction is gasified to generate hydrogen for use in further hydrocatalytic reactions. In one embodiment, one or more volatile organic compounds is also vaporized using heat generated in the gasification process. In one embodiment, an overhead fraction of the hydrocatalytic reaction is further processed to generate higher molecular weight compounds. In another embodiment, a product of the further processing is separated into a bottom fraction and an overhead fraction, where the bottom fraction is also gasified to generate hydrogen for use in further hydrocatalytic reactions.

Description

technical field [0001] The present disclosure relates generally to hydrocatalytic reactions and more particularly to supplying hydrogen to a hydrocatalytic reaction and recovering one or more organic volatile compounds in a partial product stream of the hydrocatalytic reaction by gasifying a partial product stream of the hydrocatalytic reaction methods and systems. Background technique [0002] This section serves to introduce various aspects of the art that may be related to the exemplary embodiments of this invention. It is believed that this discussion helps to provide a framework for better understanding certain aspects of the invention. Accordingly, it should be understood that this section is to be read in this light, and not as an admission of any prior art. [0003] A wide variety of industrially important substances can be produced from natural sources including biomass. In this regard, cellulosic biomass is particularly suitable due to the abundance of various c...

Claims

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Application Information

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IPC IPC(8): C10G3/00C10K3/04C10J3/00C10G1/06C01B3/32
CPCC10G1/06B01J23/882C01B3/32C01B2203/02C01B2203/0283C01B2203/065C10G3/42C10G3/52C10G2300/1014C10G2300/301C10G2300/302C10G2300/42C10J3/00C10J2200/06C10J2300/0916C10J2300/092C10J2300/0966C10J2300/1807C10K3/04Y02P20/145Y02P20/52Y02P30/20
Inventor J·B·鲍威尔L·L·约夫里昂T·P·佩尔蒂尔K·A·约翰逊T·L·弗拉沃斯F·E·卡布托H·W·申克M·吉尔希勒斯特A·Q·M·博恩
Owner SHELL INT RES MAATSCHAPPIJ BV
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