Preparation method and application of solid nano calcium carbonate denitration agent with high fluidity, high efficiency and low by-products

A technology of nano-calcium carbonate and high fluidity, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles. The effect of clogging inside the pipe and high fluidity

Pending Publication Date: 2022-05-31
通化鑫鸿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing solid denitrification agents are prone to poor fluidity of solid powder, thus clogging inside the pipeline, making it difficult to continuously and stably transport solids

Method used

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  • Preparation method and application of solid nano calcium carbonate denitration agent with high fluidity, high efficiency and low by-products
  • Preparation method and application of solid nano calcium carbonate denitration agent with high fluidity, high efficiency and low by-products

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Experimental program
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Embodiment 1

[0022] A preparation method of a solid-state high fluidity, high efficiency, and low by-product nano-calcium carbonate denitration agent, comprising the following steps:

[0023] S1: after adding 500g of water in the saponification kettle, the temperature is raised, and after the temperature is raised to 60 °C, 150g of 1,2-hydroxystearic acid is put into the saponification kettle, and it is fully stirred to form a hyperdispersant slurry;

[0024] S2: Dissolve 400 g of nano-calcium carbonate in absolute ethanol to form a 3.4 mol / L nano-calcium carbonate solution;

[0025] S3: drop the nano calcium carbonate solution that S2 obtains into the reactor, and in the reactor, add the hyperdispersant slurry that S1 obtains, the polystyrene of 150g, the trimethyl borate of 20g and the stearic acid of 50g, at 1400r Stir 20min under the rotating speed of / min to obtain the first product;

[0026] S4: the first product is placed on the surface of the filter press for filter press, and dur...

Embodiment 2

[0029] A preparation method of a solid-state high fluidity, high efficiency, and low by-product nano-calcium carbonate denitration agent, comprising the following steps:

[0030] S1: put 500g of water in the saponification kettle and heat up, after warming up to 60°C, put 200g of 1,2-hydroxystearic acid into the saponification kettle, and fully stir it to form a hyperdispersant slurry;

[0031] S2: Dissolve 400 g of nano-calcium carbonate in absolute ethanol to form a 3.4 mol / L nano-calcium carbonate solution;

[0032] S3: drop the nano calcium carbonate solution that S2 obtains into the reactor, and add the hyperdispersant slurry that S1 obtains, the polystyrene of 160g, the trimethyl borate of 20g and the stearic acid of 50g in the reactor, at 1400r Stir 30min under the rotating speed of / min to obtain the first product;

[0033] S4: put the first product on the surface of the filter press for filter press, and during the filter press, it is washed with pure water to obtain...

Embodiment 3

[0036] A preparation method of a solid-state high fluidity, high efficiency, and low by-product nano-calcium carbonate denitration agent, comprising the following steps:

[0037] S1: after putting in 500g of water in the saponification kettle, heat up, after being warming up to 60 ℃, drop into the 200g dioctyl phthalate in the saponification kettle, fully stir to make it form a hyperdispersant slurry;

[0038] S2: Dissolve 600 g of nano-calcium carbonate in absolute ethanol to form a 4.8 mol / L nano-calcium carbonate solution;

[0039] S3: drop the nano calcium carbonate solution that S2 obtains into the reactor, and in the reactor, add the hyperdispersant slurry that S1 obtains, the polystyrene of 150g, the trimethyl borate of 20g and the stearic acid of 50g, at 1400r Stir 25min under the rotating speed of / min, obtain the first product;

[0040] S4: the first product is placed on the surface of the filter press for filter press, and during the filter press, it is washed with...

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Abstract

The invention discloses a preparation method and application of a solid nano calcium carbonate denitration agent with high fluidity, high efficiency and low by-products, and belongs to the technical field of flue gas purification and denitration. The preparation method comprises the following steps: S1, preparing hyperdispersant slurry; s2, preparing a nano calcium carbonate solution; s3, mixing the nano calcium carbonate solution, the hyperdispersant slurry, polystyrene, boric acid ester and stearic acid to obtain a first product; s4, the first product is placed on the surface of a filter press to be subjected to filter pressing, the first product is washed with pure water during filter pressing, and a second product is obtained; s5, the second product is put into a granulator for granulation forming, a binder is put into the granulator during granulation, and the denitration agent can be obtained. Compared with a traditional denitration agent, the prepared denitration agent is smaller in particle size and angle of repose, has high fluidity, is prevented from being blocked in a pipeline, has the denitration efficiency far higher than that of the traditional denitration agent, and is more practical.

Description

technical field [0001] The invention relates to the technical field of flue gas purification and denitration, in particular to a preparation method and application of a solid-state high-fluidity, high-efficiency, and low-by-product nano-calcium carbonate denitration agent. Background technique [0002] In the production process of many catalysts, purifiers and adsorbents, metal nitrates are often used as raw ingredients. Metal nitrates are decomposed in the subsequent kiln roasting process of catalysts, purifiers and adsorbents to generate highly dispersed metal oxide active components in catalysts, purifiers and adsorbents, and at the same time release NO-containing active components. 2 , NO, etc. are generally referred to as NOx nitrogen oxide gas flow, NOx usually has odor and toxicity, and is also a cause of smog. when NO 2 Concentrations over 2000mg / m 3 When the gas is brownish-yellow to reddish-brown color, it generally needs to be absorbed by lye solution, acid ure...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/56
CPCB01D53/81B01D53/565B01D2257/404B01D2258/0283B01D2251/404Y02A50/20
Inventor 冯艳峰魏久鸿魏钰珊魏丽燕
Owner 通化鑫鸿新材料有限公司
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