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New application of glucoamylase, gas hydrate accelerator containing glucoamylase and method for preparing gas hydrate using the accelerator

A gas hydrate and saccharifying enzyme technology, which is applied in the field of gas hydrate accelerator and the preparation of gas hydrate by using the accelerator, can solve the problem of large amount of chemical accelerator, lowering of hydrate phase equilibrium point, and lowering of hydrate gas storage density. and other problems, to achieve the effect of facilitating industrialization and application, improving economic applicability, and improving gas storage density

Inactive Publication Date: 2017-03-29
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in general, these methods have a limited promotion effect on hydrate formation, which is still not enough compared to the industrial application process. In particular, the currently commonly used TBAB accelerator can significantly reduce the hydrate phase equilibrium point, but the hydrate phase in the presence of TBAB The gas storage density is significantly reduced
At present, the disadvantages of large amount of chemical accelerators, low reuse rate and limited effect have not been resolved.

Method used

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  • New application of glucoamylase, gas hydrate accelerator containing glucoamylase and method for preparing gas hydrate using the accelerator
  • New application of glucoamylase, gas hydrate accelerator containing glucoamylase and method for preparing gas hydrate using the accelerator
  • New application of glucoamylase, gas hydrate accelerator containing glucoamylase and method for preparing gas hydrate using the accelerator

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The saccharification enzyme is used to increase the storage density of gas hydrate.

[0031] Prepare glucoamylase and tetrabutylammonium bromide into a gas hydrate accelerator, wherein, tetrabutylammonium bromide is 10g, glucoamylase 8.0×10 6 u, the specification of glucoamylase raw material in this example is 5.5×10 6 u / g, the raw material of glucoamylase is 1.45g.

[0032] Using this accelerator to produce CO 2 A method of hydrating, comprising the steps of:

[0033] 1) Preparation of solution: Take tetrabutylammonium bromide, glucoamylase, and water to make a mixed solution, add 10g of tetrabutylammonium bromide, glucoamylase 8.0×10 per 100g of mixed solution 6 u;

[0034] 2) Pass CO into the mixed solution obtained in step 1) 2 The gas is hydrated at a pressure of 2.5MPa and a temperature of 284K to obtain a gas hydrate.

Embodiment 2

[0036] A gas hydrate accelerator, the active ingredients of which are tetrabutylammonium bromide and glucoamylase, wherein 5g of tetrabutylammonium bromide and glucoamylase take 7.4×10 6 u.

[0037] Using this accelerator to produce CO 2 A method of hydrating, comprising the steps of:

[0038] 1) Preparation solution: Take tetrabutylammonium bromide, glucoamylase, and water to make a mixed solution, add 5g of tetrabutylammonium bromide, glucoamylase 7.4×10 per 100g of mixed solution 6 u;

[0039] 2) Pass CO into the mixed solution obtained in step 1) 2 The gas is hydrated at a pressure of 0.5MPa and a temperature of 280K to obtain a gas hydrate.

Embodiment 3

[0041] A gas hydrate accelerator, the active ingredients of which are tetrabutylammonium bromide and glucoamylase, wherein 8g of tetrabutylammonium bromide and 8.5×10 glucoamylase 6 u.

[0042] Using this accelerator to produce CO 2 A method of hydrating, comprising the steps of:

[0043] 1) Preparation of solution: Take tetrabutylammonium bromide, glucoamylase, and water to make a mixed solution, add 8g of tetrabutylammonium bromide, 8.5×10 glucoamylase to each 100g of mixed solution 6 u;

[0044] 2) Pass CO into the mixed solution obtained in step 1) 2 The gas is hydrated at a pressure of 5.0MPa and a temperature of 288K to obtain a gas hydrate.

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Abstract

The invention discloses new application of glucoamylase, a gas hydrate accelerant containing glucoamylase and a method for preparing a gas hydrate by using the gas hydrate accelerant and belongs to the technical field of environmental protection and emission reduction. The glucoamylase can be used for enhancing the gas storage density of the gas hydrate. The active components of the gas hydrate accelerant containing glucoamylase are tetrabutylammonium bromide and glucoamylase. The method for preparing the gas hydrate by using the gas hydrate accelerant comprises the following steps: (1) preparing a mixed solution by using tetrabutylammonium bromide, glucoamylase and water; and (2) introducing gas to be hydrated into the mixed solution and hydrating at the pressure of 0.5-10MPa and the temperature of 263-288 DEG C to obtain the gas hydrate. The gas hydrate accelerant disclosed by the invention has the advantages of improving the gas storage density of the gas hydrate effectively and lowering the generation condition of the gas hydrate. The gas hydrate accelerant can be recycled after being used for generating the gas hydrate, and thus the gas hydrate accelerant is improved in economic applicability.

Description

technical field [0001] The invention belongs to the technical fields of chemical engineering, environmental protection and emission reduction, and specifically relates to a new application of glucoamylase, a gas hydrate accelerator containing glucoamylase and a method for preparing gas hydrate using the accelerator. Background technique [0002] Gas hydrate is an ice-like cage compound formed by small molecular gas and water under low temperature and high pressure. In gas hydrate, a spatial lattice structure is formed between the host molecules (water molecules), and the guest molecules (gas molecules) fill the crystal cavities between the lattices by utilizing the Van der Waals force between the gas molecules and the water molecules. There is no fixed stoichiometric relationship between water molecules. [0003] At present, the greenhouse effect caused by the massive emission of greenhouse gases has brought about a series of irreversible adverse effects such as sea level r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/50
Inventor 白净陈俊英常春张璐方书起马晓建梁腾波
Owner ZHENGZHOU UNIV
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