Anti-corrosion structure and anti-corrosion process for the top of a large phosphoric acid reaction tank
A phosphoric acid reaction tank, large-scale technology, applied in phosphoric acid, phosphorus oxyacid, chemical/physical/physicochemical processes, etc., can solve problems such as hidden safety accidents, peeling off of anti-corrosion rubber sheets, and corrosion of concrete foundations, achieving considerable economic benefits Benefits, extended service life, and good economic benefits
Inactive Publication Date: 2017-03-01
HUBEI ZHONGFU CHEM GROUP
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Problems solved by technology
[0002] The anti-corrosion effect of the anti-corrosion layer in the phosphoric acid reaction tank and phosphoric acid concentration negative pressure equipment is poor, especially the top of the equipment is easily corroded or even the rubber plate of the anti-corrosion layer falls off. In severe cases, the concrete on the top of the reaction tank will be damaged. Large-scale corrosion of the foundation has brought serious hidden dangers of safety accidents to the production of phosphorus chemical enterprises
Once the corroded concrete matrix loses its strength, it will cause damage to the equipment on the top of the tank, and in more serious cases, it will endanger the lives of production personnel
Bring immeasurable losses to the enterprise
Method used
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[0031] The present invention will be further described below in conjunction with the examples, but the protection scope of the present invention is not limited to the scope expressed in the examples.
[0032] like figure 1 As shown, a top anti-corrosion structure in a large phosphoric acid reaction tank includes a tank body, and the top surface of the tank body consists of a concrete base layer 1, a conductive layer 2, an anti-seepage layer 3, a gusset layer 4 and acid-resistant cement from the outside to the inside. layer 5, the gusset layer 4 is fixed with the anti-seepage layer 3 through the keel 6.
[0033] Further, the conductive layer 2 is a coating formed by mixing epoxy cement, conductive powder and graphite powder and applying it on the concrete base layer 1 after drying, with a thickness of 2-3mm.
[0034]Further, the anti-seepage layer 3 is an acid-resistant rubber sheet made of pre-vulcanized butyl rubber with a thickness of 4-6mm.
[0035] Further, the keel 6 is...
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Abstract
The invention discloses a top antiseptic structure in a large phosphoric acid reaction tank and an antiseptic technology thereof. The reaction tank comprises a tank body, wherein the top surface of the tank body is sequentially provided with a concrete base body layer, a conductive layer, an anti-seepage layer, a pinch plate layer and an acid-proof mortar layer from outside to inside, and the pinch plate layer is fixed with the anti-seepage layer via a framework. Because of the structure, the top antiseptic structure has a good antiseptic effect, resists strong corrosion of mixed acids, such as concentrated sulfuric acid, fluosilicic acid and phosphoric acid, moreover is safe and environmentally friendly, and brings considerable economic benefit and social benefit for enterprises.
Description
technical field [0001] The invention belongs to the field of anti-corrosion engineering of large and medium-sized phosphorus chemical equipment, and relates to phosphoric acid production equipment, specifically a phosphoric acid reaction tank with high-efficiency anti-corrosion function. The invention also relates to the anti-corrosion structure on the top of the equipment and its anti-corrosion process. Background technique [0002] The anti-corrosion effect of the anti-corrosion layer in the phosphoric acid reaction tank and phosphoric acid concentration negative pressure equipment is poor, especially the top of the equipment is easily corroded or even the rubber plate of the anti-corrosion layer falls off. In severe cases, the concrete on the top of the reaction tank will be damaged. Large-scale corrosion of the foundation has brought serious hidden dangers of safety accidents to the production of phosphorus chemical enterprises. Once the corroded concrete matrix loses it...
Claims
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IPC IPC(8): B01J19/00C01B25/22
Inventor 刘锋
Owner HUBEI ZHONGFU CHEM GROUP