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Formaldehyde removal method using PTC ceramic heater, and filter core

A ceramic heater, formaldehyde method technology, applied in chemical instruments and methods, separation methods, dispersed particle separation and other directions, can solve the problems of adsorption saturation, short service life, etc., to achieve full utilization, good application prospects, and easy operation. Effect

Inactive Publication Date: 2021-03-30
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for purifying formaldehyde by thermocatalytic oxidation using a PTC ceramic heater to realize the effective utilization of the catalyst and solve the problems of adsorption saturation and short service life in the removal of formaldehyde in the prior art

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  • Formaldehyde removal method using PTC ceramic heater, and filter core
  • Formaldehyde removal method using PTC ceramic heater, and filter core
  • Formaldehyde removal method using PTC ceramic heater, and filter core

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Embodiment Construction

[0023] The implementation rights of the present invention will be described in detail below in conjunction with the accompanying drawings, but the present invention can be implemented in many different ways covered by the claims.

[0024] Please refer to figure 1 and figure 2 According to an embodiment of the present invention, the formaldehyde purification device includes: a PTC ceramic heater body 1, a packaging material 2, a transition metal oxide catalyst 3, a temperature-sensitive thermal resistor 4, a lead wire 5, a temperature controller 6, and a heating switch 7.

[0025] A method for purifying formaldehyde by thermocatalytic oxidation using a PTC ceramic heater of the present invention mainly utilizes the constant temperature heating of the PTC ceramic heater 1 and the characteristics of a packed bed, and adopts a more economical transition metal oxide catalyst 3 , can not only realize the catalytic decomposition of formaldehyde in the air at room temperature, but ...

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Abstract

The invention relates to a method for removing formaldehyde by using a PTC ceramic heater, and a filter core. The method comprises: filling pores of a PTC ceramic heater with a catalyst for removing formaldehyde, wherein the filled catalyst is a granular transition metal oxide; and packaging the upper side and the lower side of the pores of the PTC ceramic heater by using a heat-resistant materialto obtain the formaldehyde purification product. According to the invention, PTC is used as a packed bed and a constant-temperature heating source, and transition metal catalyst particles are filledin pores among the ceramic chips, so that catalytic decomposition reaction can be carried out at room temperature, a thermal catalytic oxidation function can be realized, and the method has the advantages of simplicity in operation, stable heating temperature, safety, reliability and capability of customizing the size according to use occasions.

Description

technical field [0001] The invention relates to the field of indoor low-concentration organic matter purification, in particular to a method for removing formaldehyde using a PTC ceramic heater and a filter element. Background technique [0002] At present, the gaseous pollutants in indoor air are mainly volatile organic compounds (Volatile organic compounds, referred to as VOCs), including formaldehyde, benzene, toluene, xylene, etc., which mainly come from wood-based panels, paint and other decorative building materials and cigarette smoke, among which formaldehyde The most stubborn, its incubation period can reach 3 to 15 years, long-term harm to people's health. [0003] PTC (Positive Temperature Coefficient), usually referred to as a positive temperature coefficient thermistor, is a typical temperature-sensitive semiconductor resistor. Ceramic PTC is mainly composed of barium titanate (or strontium, lead), adding a small amount of rare earth (Y, Nb, Bi, Sb), acceptor (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/72
CPCB01D53/8668B01D2255/2073B01D2255/20761
Inventor 裴晶晶候贝贝
Owner TIANJIN UNIV
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