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Naphthalene remover used for dry method naphthalene remove of hydrocarbon industry tail gas as well as preparation and use method of naphthalene remover

A technology for hydrocarbon industry and naphthalene removal agent, which is applied in chemical instruments and methods, other chemical processes, selection of absorbent solid gas purification, etc. It can solve problems such as difficult to achieve, high summer temperature, and poor removal efficiency , to achieve the effect of simple preparation method and simple composition

Active Publication Date: 2014-08-13
THE NORTHWEST RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In general, the naphthalene washing process generally has the disadvantages of high temperature in summer and poor efficiency of naphthalene removal; low temperature in winter and easy clogging of the naphthalene washing tower
Moreover, the accuracy of naphthalene removal by simple naphthalene washing process is generally not high, and it is difficult to reach 50mg / m 3 the following

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The naphthalene remover of the present embodiment is made up of coal-based activated carbon and an auxiliary agent loaded on the coal-based activated carbon; the mass percentage of the auxiliary agent in the described naphthalene-removed agent is 0.02%, and the balance is coal-based activated carbon; the auxiliary agent The agent is cetyltrimethylammonium bromide and aluminum chloride; the specific surface area of ​​the coal-based activated carbon is 800m 2 / g~1100m 2 / g, the water capacity mass fraction is 60%; The bulk density of the denaphthalene agent is 450kg / m 3 ~620kg / m 3 .

[0023] The preparation method is as follows: weigh 0.033g of cetyltrimethylammonium bromide and 0.30g of aluminum chloride respectively, dilute with water to 1000mL to prepare the solution for later use, and measure 100mL of coal whose water volume mass fraction is 60% with a graduated cylinder. 45g-60g of high-quality activated carbon, and then soak the coal-based activated carbon in the...

Embodiment 2

[0026] The naphthalene removal agent of the present embodiment is made up of woody activated carbon and the auxiliary agent loaded on the coal-based activated carbon; the mass percentage of the auxiliary agent is 0.1% in the described naphthalene removal agent, and the balance is woody activated carbon; the auxiliary agent is cetyltrimethylammonium bromide and aluminum chloride; the specific surface area of ​​the wood activated carbon is 800m 2 / g~1100m 2 / g, the water capacity mass fraction is 70%; The bulk density of the denaphthalene agent is 450kg / m 3 ~620kg / m 3 .

[0027] The preparation method is as follows: weigh 0.15g of cetyltrimethylammonium bromide and 1.30g of aluminum chloride respectively, dilute with water to 1000mL to prepare the solution for later use, and measure 100mL of wood with a water volume mass fraction of 70% with a graduated cylinder. Activated carbon 45g ~ 60g, then soak wooden activated carbon in the prepared solution for 8h, and then dry in air...

Embodiment 3

[0030] The naphthalene remover of the present embodiment is made up of coal-based activated carbon and an auxiliary agent loaded on the coal-based activated carbon; the mass percentage of the auxiliary agent in the described naphthalene-removed agent is 0.2%, and the balance is coal-based activated carbon; the auxiliary agent The agent is cetyltrimethylammonium bromide and aluminum chloride; the specific surface area of ​​the coal-based activated carbon is 800m 2 / g~1100m 2 / g, the water capacity mass fraction is 70%; The bulk density of the denaphthalene agent is 450kg / m 3 ~620kg / m 3 .

[0031] The preparation method is: weigh 0.29g cetyltrimethylammonium bromide and 2.60g aluminum chloride respectively, dilute to 1000mL with water to prepare the solution for later use, measure 100mL coal-based activated carbon with a water volume mass fraction of 70% in a graduated cylinder 45g to 60g, then soak the coal-based activated carbon in the prepared solution for 4h, and then dry...

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Abstract

The invention discloses a naphthalene remover used for dry method naphthalene remove of hydrocarbon industry tail gas. The naphthalene remover comprises activated carbon and an assistant loaded on the activated carbon. The mass percentage of the assistant in the naphthalene remover is 0.02%-2%, and the rest is the activated carbon; and the assistant is cetyl trimethyl ammonium bromide and / or aluminum chloride. In addition, the invention also discloses a preparation method and a use method of the naphthalene remover. The naphthalene remover disclosed by the invention has high precision and saturated naphthalene solubility (the mass of naphthalene in 100g of naphthalene removing adsorbent which is saturated by absorbing naphthalene) when being used for removing naphthalene in the gas. Under the conditions that the temperature is smaller than or equal to 50 DEG and the pressure is 0MPa-3.0MPa and air speed is 200h<-1>-1500h<-1>, the content of naphthalene in the gas is lowered to 45mg / m<3>, and the saturated naphthalene solubility is 23.6%-31.2%. The naphthalene remover is suitable for deep removal of the naphthalene in coke-oven gas and waste gas containing naphthalene.

Description

technical field [0001] The invention belongs to the technical field of industrial tail gas purification, and in particular relates to a naphthalene removal agent used for dry removal of naphthalene from hydrocarbon industrial tail gas and a preparation and use method thereof. Background technique [0002] The melting point of naphthalene is 80.5°C. In fact, even if it is cooled to normal temperature, there are still a large amount of naphthalene in the tail gas of hydrocarbon industries such as coal gas and coke oven gas. These naphthalene will gradually condense and crystallize during subsequent use, causing blockage of equipment and pipelines. Therefore, the removal of naphthalene in gas has always been a subject of concern. [0003] At present, the removal of naphthalene in the tail gas of the hydrocarbon industry is mainly divided into two categories: cryogenic cooling and atmospheric solvent absorption. The low-temperature cooling method has not been implemented on a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/04C10K1/32
Inventor 齐小峰张睿王红梅谢小莉
Owner THE NORTHWEST RES INST OF CHEM IND