Thermoplastic-resin-sand-to-core waste gas purification method using materials capable of performing online regeneration and adsorption

Abstract

The invention relates to a thermoplastic-resin-sand-to-core waste gas purification method using materials capable of performing online regeneration and adsorption. The method comprises: 1, collecting waste gas; 2, spraying powder into the waste gas; 3, mixing the captured waste gas into the powder material through the system, conveying into a waste gas filter through a hard wind pipe, and removing oil stains and dust from the waste gas; and 4, performing adsorption / online regeneration alternating cycle operation. According to the present invention, the organic waste gas, the oily substances, the dust and the like generated during the operation of the core production machine in the core production workshop are effectively captured; and during the waste gas capturing process, the waste gas is subjected to powder spraying and filtration, the organic matters in the waste gas are adsorbed with the adsorbent, and the adsorption device is regularly and onlinely regenerated, such that the operation reliability and the operation stability of the waste gas purification treatment system are effectively ensured, and the occupational hazards and the environmental pollution caused by the dust in the production process of the core production machine in the thermoplastic-resin-sand-to-core production workshop are eliminated or reduced.

Description

technical field [0001] The invention relates to the fields of post sanitation and environmental protection, and more specifically relates to a method for purifying waste gas from cores made of thermoplastic resin sand that can regenerate adsorption materials on-line. Background technique [0002] With the development of casting technology, organic binder modeling and core making technologies such as hot box, cold box, shell core and resin self-setting sand technology are widely used. The produced aldehydes, phenols, amines and other organic substances are mixed in the air to form organic waste gas, which not only causes environmental pollution, but also harms human health. Therefore, organic waste gas pollution in foundry production has become one of the focus issues in the industry. Adopting an economical and effective method to solve the problem of organic waste gas pollution in foundry production has important practical significance for the sustainable development of the...

AI Technical Summary

Problems solved by technology

At present, there have been reports on the treatment of triethylamine-containing organic waste gas generated by cold core core making in foundries. Wastewater containing amine salts, if not treated, will cause secondary pollution to the environment

The second is to use the pulse corona method to treat waste gas containing triethylamine, which is currently in the stage of laboratory research. However, there are no relevant reports on the treatment of organic waste gas containing other components generated in foundry workshops. The pollution control work of organic waste gas in foundry workshops just getting started

However, due to the low concentration of organic matter in the organic waste gas of the foundry industry and the low gas production, it is difficult to directly copy and use the organic waste gas methods of the above industries

Images