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Composite activated regenerant for hydrogen peroxide working fluid of anthraquinone process and preparation method thereof

An anthraquinone method, hydrogen peroxide technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, inorganic chemistry, etc., can solve instability, working liquid alkali It can solve the problems of strong resistance and uncontrollability, and achieve the effect of easy pulverization, high regeneration activity and improved regeneration effect

Active Publication Date: 2015-12-23
陕西开达化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a compound active regenerator for hydrogen peroxide working fluid by anthraquinone method, which solves the problem that the working fluid is too alkaline, uncontrollable and unstable due to the long-term use of the existing hydrogen peroxide working fluid regenerator

Method used

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  • Composite activated regenerant for hydrogen peroxide working fluid of anthraquinone process and preparation method thereof
  • Composite activated regenerant for hydrogen peroxide working fluid of anthraquinone process and preparation method thereof
  • Composite activated regenerant for hydrogen peroxide working fluid of anthraquinone process and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A two-layer structure active regenerator is used.

[0063] Active Al on the outer surface layer 2 o 3 The content is 50%, and the CaO content is 50%.

[0064] The CaO content of the core layer is 50%, SiO 2 The content is 50%.

[0065] Regeneration conditions: working fluid flow rate is 80M 3 / H, the regeneration agent is filled with 10T.

[0066] Conditions of the working fluid before regeneration: the total anthraquinone content is 125g / L, the total degradation products are 38g / L, and the acidity is 14.5.

[0067] Conditions of the working fluid after regeneration: the total anthraquinone content is 127g / L, the total degradation products are 36g / L, and the alkalinity: 8.19.

Embodiment 2

[0069] A two-layer structure active regenerator is used.

[0070] Active Al on the outer surface layer 2 o 3 The CaO content is 70%, and the CaO content is 30%.

[0071] The content of CaO in the core layer is 95%, SiO 2 The content is 5%.

[0072] Regeneration conditions: working fluid flow rate is 80M 3 / H, the regeneration agent is filled with 10T.

[0073] Conditions of the working fluid before regeneration: the total anthraquinone content is 125g / L, the total degradation products are 38g / L, and the acidity is 14.5.

[0074] Condition of working fluid after regeneration: total anthraquinone content is 130g / L, total degradation products are 30g / L, alkalinity: 5.32.

Embodiment 3

[0076] A two-layer structure active regenerator is used.

[0077] Active Al on the outer surface layer 2 o 3 The content is 95%, and the CaO content is 5%.

[0078] The CaO content of the core layer is 60%, SiO 2 The content is 40%.

[0079] Regeneration conditions: working fluid flow rate is 80M 3 / H, the regeneration agent is filled with 10T.

[0080] Conditions of the working fluid before regeneration: the total anthraquinone content is 125g / L, the total degradation products are 38g / L, and the acidity is 14.5:.

[0081] Conditions of the working fluid after regeneration: the total anthraquinone content is 135g / L, the total degradation products are 22g / L, and the alkalinity is 0.43.

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Abstract

The invention discloses a composite activated regenerant for hydrogen peroxide working fluid of anthraquinone process and a preparation method thereof. The regenerant comprises a two-layer or three-layer structure, wherein the two-layer structure is as follows: an outer-surface layer comprises 50 to 95% of activated aluminium oxide, with the balance being calcium oxide, and a core-part layer comprises 50% of calcium oxide and 50% of silicon dioxide; and the three-layer structure is as follows: the outer-surface layer comprises 50 to 99% of the activated aluminium oxide, 0 to 2.5% of alkali metal oxide, with the balance being the calcium oxide; a centripetal-part layer comprises 50 to 90% of the calcium oxide, 0 to 2.5% of the alkali metal oxide, with the balance being the silicon dioxide; and the core-part layer comprises 50 to 99% of the silicon oxide, with the balance being the calcium oxide. The activated regenerant provided by the invention solves the problems of over strong alkalinity, uncontrollability and instability of the working fluid due to long-term use of conventional hydrogen peroxide working fluid; a composite layering structure is adopted, so regeneration activity is high, and system load and anthraquinone consumption are effectively reduced; meanwhile, a large number of costs are saved.

Description

technical field [0001] The invention relates to a working fluid regenerating agent, in particular to an active regenerating agent for a composite anthraquinone method hydrogen peroxide working liquid, and also relates to a preparation method of the active regenerating agent. Background technique [0002] h 2 o 2 It is a kind of green chemical product. It has almost no pollution in the process of production and use, so it is called "clean" chemical product, and its application prospect is very promising. [0003] 2-ethylanthraquinone (EAQ) and tetrahydro 2-ethylanthraquinone (H 4 EAQ) is the anthraquinone method H 2 o 2 The circulating working fluid carrier in the production process, but due to various unavoidable side reactions in the actual production, some H 2 o 2 EAQ and H 4 EAQ derivatives (collectively referred to as degradants). The long-term accumulation of such degradants can seriously affect the H 2 o 2 The normal production process will lead to a series o...

Claims

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Application Information

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IPC IPC(8): C01B15/023
Inventor 余建强费腾李乐曹风华
Owner 陕西开达化工有限责任公司
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