Regenerant and processing method of three-way catalytic converter of gasoline automobile

Abstract

The invention discloses a regenerant and a processing method of a three-way catalytic converter of a gasoline automobile. The regenerant comprises the following raw materials in mass percent: 0.006-0.03% of chlorine-containing solvent, 0.01-0.04% of hydrogen peroxide and 99.96-99.954% of methanol. The chlorine-containing solvent and the hydrogen peroxide in the raw materials are added into the methanol to be mixed to obtain the regenerant of the three-way catalytic converter of the gasoline automobile. The regenerant can be input into a burning chamber of an automobile engine for fully burning, then a high-temperature oxidation environment containing chlorine ions can be established in an exhaust system, the high-temperature oxidation environment can be used for removing deposited carbon and sulfur-phosphorus chemical complexes covering on the three-way catalyst in the three-way catalytic converter, and simultaneously, chlorine is replenished for the three-way catalyst which is deactivated caused by chlorine loss and grain accumulation to enable the grown grains accumulated on the surface thereof to be dispersed again, thereby realizing the regeneration of the three-way catalyst in the three-way catalytic converter.

Description

technical field [0001] The invention relates to the regeneration technology of products in the automobile field, in particular to a regeneration agent and a treatment method for a three-way catalytic converter of an automobile. Background technique [0002] All cars produced and sold in China since 2000 are equipped with closed-loop EFI engines. The biggest feature of the closed-loop EFI engine structure is the use of an air-fuel ratio feedback system centered on an oxygen sensor and a three-way catalytic converter. Whether they work normally or not Determines the engine's fuel consumption, power, emissions and other working conditions. [0003] Automotive three-way catalytic converters have a lifespan. If the three-way catalytic converter exceeds the validity period, the function of purifying exhaust gas will be weakened or even invalidated. The validity period of the three-way catalytic converter in China is about 80,000 to 100,000 kilometers. The validity period of the n...

AI Technical Summary

Problems solved by technology

The three-way catalytic converters of many vehicles are also in a state where the function of purifying exhaust gas is severely weakened, or even fails, and at the same time, the fuel consumption of the vehicle is increased by about 10%.

[0004] The developed countries in the world adopt the method of replacing the overdue and invalid three-way catalytic converters of automobiles, but the method of replacement is unacceptable for China's national conditions. Taking Chinese taxis as an example, taxis drive 100,000 kilometers every year The above means that taxis have to replace three-way catalytic converters every year, which is unbearable for taxi companies and taxi drivers. If China replaces all overdue and invalid three-way catalytic converters in automobiles, it will cost The social cost is tens of billions of RMB. Since the three-way catalyst uses imported precious metals, it will cost tens of billions of dollars of precious foreign exchange to import the catalyst alone.

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