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Process for producing hydrogen by continuously catalyzing, absorbing, strengthening and reforming biological glycerine through moving bed

A technology of moving bed and glycerin, applied in hydrogen, chemical recovery, inorganic chemistry, etc., to achieve continuous adsorption and desorption, increase hydrogen production rate and hydrogen product purity, energy conversion and efficient utilization

Inactive Publication Date: 2011-11-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the continuous catalytic reforming process, such as Chinese Patent Publication No. CN1020111C, Chinese Patent Publication No. CN1223293A, and Chinese Patent 200410048363.9, they are all aimed at improving the liquid yield and hydrogen yield by catalytic reforming of feedstock oil, and do not involve CO 2 Hydrogen Production by Adsorption Enhanced Reforming

Method used

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  • Process for producing hydrogen by continuously catalyzing, absorbing, strengthening and reforming biological glycerine through moving bed
  • Process for producing hydrogen by continuously catalyzing, absorbing, strengthening and reforming biological glycerine through moving bed

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Bioglycerol, water vapor and nitrogen are mixed according to the molar ratio C / H 2 O / N 2 It is 1.78 / 5.35 / 20.8, sent to the evaporator to evaporate and mix, and the flow rate of nitrogen gas is: 0.3×10 -3 m 3 min -1 (STP), the temperature of the reformer is 500°C, the regenerator is purged with the mixed gas of 20% water vapor, 5% hydrogen and 75% nitrogen by volume, the temperature of the regenerator is 900°C, the catalyst and adsorption The particle size of the catalyst is 0.40-0.90mm. The moving speed of the catalyst and adsorbent in the reformer and the regenerator is maintained at 10.0cm / min. The device runs for 60 minutes, collects the product gas of the reformer, and uses GC to analyze the product gas composition , the average volume concentration of the measured product gas is: 15.5% H 2 , 0.6% CH 4 , 0.2% CO 2 , 0.2% CO, net of N 2 and water vapor, the calculated product hydrogen purity is 93.9%.

Embodiment 2

[0022] Bioglycerol, water vapor and nitrogen are mixed according to the molar ratio C / H 2 O / N 2 It is 1.78 / 8.60 / 21.0, sent to the evaporator to evaporate and mix, and the flow rate of nitrogen gas is: 0.3×10 -3 m 3 min -1 (STP), the temperature of the reformer is 550°C, the regenerator is purged with the mixed gas of 20% water vapor, 3% hydrogen and 77% nitrogen by volume, the temperature of the regenerator is 850°C, the catalyst and adsorption The particle size of the catalyst and the adsorbent are both 0.40-0.90mm. The moving speed of the catalyst and the adsorbent in the reformer and the regenerator is maintained at 12.6cm / min. The device runs for 46 minutes, collects the product gas of the reformer, and uses GC to analyze the product gas composition , the measured product gas average volume concentration is: 16.3% H 2 , 0.4% CH 4 , 0.2% CO 2 , 0.5% CO, deduction of N 2 and water vapor, the calculated product hydrogen purity is 93.7%.

Embodiment 3

[0024] Bioglycerol, water vapor and nitrogen are mixed according to the molar ratio C / H 2 O / N 2 It is 1.20 / 6.05 / 22.8, sent to the evaporator to evaporate and mix, and the flow rate of nitrogen gas is: 0.3×10 -3 m 3 min -1 (STP), the temperature of the reformer is 600°C, the regenerator is purged with the mixed gas of 10% water vapor, 5% hydrogen and 85% nitrogen by volume, the temperature of the regenerator is 860°C, the catalyst and adsorption The particle size of the catalyst and the adsorbent are both 0.40-0.90mm. The moving speed of the catalyst and the adsorbent in the reformer and the regenerator is maintained at 9.0cm / min. The device runs for 65 minutes, collects the product gas of the reformer, and uses GC to analyze the product gas composition , the average volume concentration of the measured product gas is: 15.0% H 2 , 0.2% CH 4 , 0.3% CO 2 , 1.0% CO, net of N 2 and water vapor, the calculated product hydrogen purity is 90.9%.

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Abstract

The invention belongs to the technical field of biomass energy chemical industry and relates to a process for producing hydrogen by continuously catalyzing, absorbing, strengthening and reforming biological glycerine through a moving bed. The process is characterized in that: the biological glycerine is firstly evaporated in an evaporator, is mixed with water vapor and nitrogen to be fed into a reformer, and is in countercurrent contact with a catalyst and adsorbent particles to react; the catalyst and the adsorbent after the reaction drop into a regenerator to be regenerated; the catalyst and the adsorbent are continuously moved, reacted and regenerated between the reformer and the regenerator through a lifting tube; and the fresh catalyst and the adsorbent needing to be supplemented canbe fed into the reformer through a supplement inlet. The process can prepare a high-purity hydrogen product from the biological glycerine raw material at the temperature of between 450 and 600 DEG C,and realizes continuous movement, reaction and regenerative circulation of the catalyst and the adsorbent so that the catalyst and the adsorbent always run in a nearly fresh state. The process greatly improves the purity of the hydrogen product, reduces the separating cost of the hydrogen producing product and has certain significance to hydrogen production and control of CO2 discharge.

Description

technical field [0001] The invention belongs to the technical field of biomass energy chemical industry, and relates to a process for the continuous catalytic adsorption of moving bed to strengthen the reforming of biological glycerol for hydrogen production, and in particular to a process for the continuous catalytic adsorption of moving bed to strengthen the reforming of bioglycerin to produce hydrogen by using glycerol, a by-product of biodiesel. The process of producing high-purity hydrogen at low temperature. Background technique [0002] Using oil crops or waste cooking oil to carry out transesterification reaction with methanol (or ethanol) can produce fatty acid methyl ester (or ethyl ester) and glycerin and other products. After separating glycerin, biodiesel with the same quality as general diesel oil can be produced. With the increase of biodiesel production, finding new ways to utilize the by-product glycerol has attracted worldwide attention, among which steam r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/42
CPCY02P20/584
Inventor 豆斌林刘迎光冯聪
Owner DALIAN UNIV OF TECH