CN104280323A

CN104280323A - Novel cooking fume concentration real-time detection method

Info

Publication number: CN104280323A
Application number: CN201310272994.8A
Authority: CN
Inventors: 顾林鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-02
Filing date: 2013-07-02
Publication date: 2015-01-14

Abstract

The invention aims to overcome the defects existing in the prior art, provides a cooking fume concentration real-time detection method for real-time detection whether the concentration of discharged cooking fume exceeds a standard, and solves the problems in a national standard method that the detection cycle is long, the cost is high and steps are tedious, so as to be beneficial for environmental protection departments for real-time monitoring on cooking fume emission conditions. The method is realized through the following technical scheme. The novel cooking fume concentration real-time detection method is characterized in that a pair of parallel plate capacitors are placed at a part, needing to be detected, of a cooking fume wind exhaust channel, so that cooking fume flows from a gap between two electrodes of the parallel plate capacitors; a concentration detection module real-timely reflects changes of the cooking fume concentration according to detected changes of the parallel plate capacitor capacitance; and at the same time, whether a result exceeds the standard according to the cooking fume concentration sum obtained through processing operations.

Description

A kind of novel oil smoke concentration real-time detection method

Technical field

The present invention relates to the detection technique of oil smoke concentration, particularly relate to a kind of real-time detection method of oil smoke concentration.

Background technology

In recent years, along with development and the raising of Chinese national economy level, catering industry fume pollution has become a large problem of city environmental pollution, the atmosphere pollution of its discharge is mainly gasoloid, wherein containing edible oil and food volatile matter at high temperature, by the oxidation of edible oil and food, cracking, hydrolysis and the aldehydes, ketone, paraffinic and the product such as chain alkene, palycyclic aromatic that are formed, composition is very complicated.Research shows; edible oil is when being heated to 270 degree-280 and spending; up to a hundred compounds are had in the condensation product collected; from state; oil flue waste gas comprises gas, liquid, solid three-phase, and wherein the particle diameter of liquid-solid phase particle is generally less than 10um, and liquid-solid phase granulate mixture stickability is strong; major part pollutant is water insoluble, and polarity is little.That studies kitchen fume along with each research institution gos deep into, and kitchen fume more and more causes the extensive concern of people to the harm of human body, and on all kinds of media, the report of relevant kitchen fume harm emerges in an endless stream.Nanjing investigation finds, in crowd, the generation of the lung squamous cancer of 51.6% and the adenocarcinoma of lung of 61.0oh is owing to fume pollution.As can be seen here, fume pollution problem becomes increasingly conspicuous, and oil smoke also more and more receives the concern of people on the impact of health, and oneself becomes one of focus of environmental protection complaint.Therefore many countries, comprise China, have formulated relevant law and have discharged to control it.The field monitoring of oil smoke concentration is that field of Environment Protection works as one of idle problem of business, but current method and technique still has a lot of incomplete place.The oil smoke sampling specified in GB18483-2001 " cooking fume emission standard (the trying) " appendix A that State Environmental Protection Administration promulgates and analytical approach are the sampling of on-the-spot stainless steel metal filter cylinder, and laboratory infrared spectrophotometer analyzes (abbreviation National Standard Method).This method sense cycle is long, and expense is expensive, complex steps, and on-the-spot test conditional request is high, is difficult to the needs meeting cooking fume supervision and check and on-site law-enforcing monitoring.

Summary of the invention

The object of the invention is to overcome prior art above shortcomings, a kind of real-time detection method of oil smoke concentration is provided, whether real-time detection discharge oil smoke concentration exceeds standard, solve sense cycle in National Standard Method long, expense is expensive, the problems such as complex steps, are beneficial to the oil smoke discharge situation that environmental administration monitors relevant unit in real time.The present invention is achieved through the following technical solutions.

A real-time detection method for novel oil smoke concentration, is characterized in that pair of parallel plate electric capacity is placed at the position detected at oil smoke air exhaust passage needs, oil smoke is flow through from the gap between parallel plate capacitor two electrodes; Concentration detection module reflects the change of oil smoke concentration in real time according to the change of the parallel plate capacitor electric capacity detected; Simultaneously through processing the result that computing draws oil smoke concentration and whether exceeds standard.

In said method, due to the unevenness of oil smoke, the space that two cube electrodes are formed will cover whole flue, makes measurement more accurate.

Accompanying drawing explanation

Fig. 1 is the scheme of installation in the inventive method embodiment.

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.

At oil smoke exhaust outlet place, as the throat in Fig. 1 or exhaust outlet 1, place pair of parallel plate electric capacity 3 facing each otherly, oil smoke flow 2 is flow through from the gap between parallel plate capacitor 3 two electrodes; Concentration detection module 4 reflects the change of oil smoke concentration in real time according to the change of the parallel plate capacitor electric capacity detected; Simultaneously through processing the result that computing draws oil smoke concentration and whether exceeds standard.

Claims

1. a real-time detection method for novel oil smoke concentration, is characterized in that pair of parallel plate electric capacity is placed at the position detected at oil smoke air exhaust passage needs, oil smoke is flow through from the gap between parallel plate capacitor two electrodes; Concentration detection module reflects the change of oil smoke concentration in real time according to the change of the parallel plate capacitor electric capacity detected; Simultaneously through processing the result that computing draws oil smoke concentration and whether exceeds standard.

2. method according to claim 1, its feature comprises:

(1) gap that described parallel plate capacitor two pole plates are formed is exactly the gap of whole oil smoke process;

(2) according to parallel plate capacitor without the initial capacitance value of oil smoke process and oil smoke through capacitance later, set up the quantitative relationship of oil smoke concentration value and electric capacitance change value.

(3) measure threshold values when oil smoke concentration exceeds standard corresponding to described electric capacitance change value, if described electric capacitance change value exceedes this threshold values, then represent that oil smoke concentration exceeds standard.

3. method according to claim 2, is characterized in that the capacitance of described concentration detection module to the parallel plate capacitor detected at every turn processes and computing, exports oil smoke concentration value in real time.