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Method and system for rapidly cleaning inner wall of butadiene storage tank by thickening catalysis method

A butadiene, chemical cleaning technology, applied in cleaning methods and utensils, chemical instruments and methods, cleaning methods using liquids, etc., can solve problems such as low efficiency

Pending Publication Date: 2020-09-15
大连天凡防腐工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In petrochemical storage and transportation fields such as refining, coal-to-oil, coal-to-olefins, warehousing, and oil reserve depots, especially in the downstream chemical equipment of oil refining, such as the production process of polypropylene, butadiene, PX, and PTA, a large number of finished products are used to Fine chemical raw materials of butadiene phthalate, and some storage tanks for storing chemical raw materials are even made of 304 stainless steel, ranging from 2000 cubic meters to 20,000 cubic meters. Traditional chemical cleaning methods generally use close-range spraying operations, which need to be Scaffolding is set up around the tank, and manual cleaning, cleaning, spraying water, and chemical wipes are used to clean up. The efficiency is low, and chemical cleaning takes at least 48 hours for a storage tank.

Method used

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  • Method and system for rapidly cleaning inner wall of butadiene storage tank by thickening catalysis method
  • Method and system for rapidly cleaning inner wall of butadiene storage tank by thickening catalysis method
  • Method and system for rapidly cleaning inner wall of butadiene storage tank by thickening catalysis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A thickening catalytic method for quickly cleaning the inner wall of a storage tank, using the method of manipulating a drone to spray chemical agents on the inner wall of the storage tank. The surface of the metal substrate of the tank can realize the addition reaction with the residual butadiene and the compound agent to generate acetic acid, carbon dioxide and water with good solubility and stability;

[0028] The chemical reaction equation of butadiene and potassium permanganate under acidic conditions is as follows:

[0029]

[0030] Under acidic conditions, under the action of potassium permanganate oxidant, the double bond of butadiene is broken to form formaldehyde, acetaldehyde and propionaldehyde, formaldehyde continues to oxidize to form carbon dioxide, acetaldehyde is oxidized to form acetic acid, and a small amount of propionaldehyde produces propionic acid. The residence time of chemical cleaning agent is generally within 5 hours, and the products of ad...

Embodiment 2

[0037] Such as figure 1 Shown, a kind of tapered roller rotary spray gun unmanned aerial vehicle fast chemical cleaning system that a kind of embodiment 1 method adopts, comprises tapered roller rotary spray gun 11 and unmanned aerial vehicle spraying equipment 10; As figure 2 As shown, the tapered roller rotary spray gun 11 includes a tapered roller nozzle 1, a tapered roller cavity 2, and a lock 3 connected in sequence. The tapered roller nozzle 1 is bullet-shaped, and the surface is uniform from bottom to top. There are multiple rows of shooting holes 4, and the tapered roller cavity 2 includes a shell 5 and an inner cavity wall 6, such as Figure 4 As shown, a plurality of tapered roller rotating rollers 7 made of 316 stainless steel are seamlessly connected with the two, and the inner cavity wall 6 can rotate with the tapered roller rotating rollers 7, and the inner cavity wall 6 automatically Multiple rows of tongue-shaped grooves 8 corresponding to the perforations 4 ...

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Abstract

The invention discloses a method and system for rapidly cleaning the inner wall of a butadiene storage tank by a thickening catalysis method, and relates to the technical field of internal cleaning offine chemical storage tanks. The system comprises a tapered roller rotating spray gun and a drone spraying device; the tapered roller rotating spray gun comprises a tapered roller spray head, a tapered roller cavity and a lock catch which are sequentially connected; the tapered roller cavity comprises a shell and an inner cavity wall; a plurality of tapered roller rotating rolling shafts made of316 stainless steel are arranged between the shell and the inner cavity wall and are seamlessly connected with the shell and the inner cavity wall; the tapered roller cavity is connected with a pneumatic drug delivery umbilical cord through the lock catch; and the drone spraying equipment is used as a flight carrier to be connected with the tapered roller rotating spray gun. According to the method and system for rapidly cleaning the inner wall of the butadiene storage tank by the thickening catalysis method, the climbing operation of professional constructors is omitted, the traditional construction operation that the constructors conduct wiping by adopting hanging baskets, hanging ropes and the like to be hung on the inner walls of a storage tank and a spherical tank is broken through, traditional in-tank cleaning and scaffold erection along the tank body for construction are replaced, and the safety of physical and chemical cleaning construction operation of the inner walls of the oil tank and the spherical tank is greatly improved.

Description

technical field [0001] The invention relates to the technical field of internal cleaning of fine chemical storage tanks, in particular to a method and system for quickly cleaning the inner wall of a butadiene storage tank by a thickening catalytic method. Background technique [0002] In petrochemical storage and transportation fields such as refining, coal-to-oil, coal-to-olefins, warehousing, and oil reserve depots, especially in the downstream chemical equipment of oil refining, such as the production process of polypropylene, butadiene, PX, and PTA, a large number of finished products are used to Fine chemical raw materials of butadiene phthalate, and some storage tanks for storing chemical raw materials are even made of 304 stainless steel, ranging from 2000 cubic meters to 20,000 cubic meters. Traditional chemical cleaning methods generally use close-range spraying operations, which need to be Scaffolding is set up around the tank, and manual cleaning, cleaning, sprayi...

Claims

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Application Information

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IPC IPC(8): B08B9/093B08B3/08B08B13/00
CPCB08B9/0936B08B3/08B08B13/00
Inventor 邹竞逸
Owner 大连天凡防腐工程有限公司