Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Combustion method and device for saving energy and reducing NOx for petrochemical engineering heating furnace

A technology of petrochemical industry and combustion method, which is applied in the direction of combustion method, combustion using lump fuel and liquid fuel, combustion using lump fuel and gaseous fuel, etc. Seeing problems such as heating furnace and combustion control method, achieving energy saving effect, simple structure, and reducing nitrogen oxide content

Active Publication Date: 2016-06-22
SHANDONG ORIENT HONGYE CHEM
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing process, the nitrogen oxide content of the combustion flue gas of the heating furnace is still very high, as high as 300mg / m 3 , does not meet environmental protection requirements, and is not conducive to saving gas energy
At present, there is no simple and effective heating furnace and combustion control method to ensure that the flue gas discharge meets the standard and at the same time have the effect of reducing energy consumption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Combustion method and device for saving energy and reducing NOx for petrochemical engineering heating furnace
  • Combustion method and device for saving energy and reducing NOx for petrochemical engineering heating furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a heating furnace for saving energy and reducing NOx includes a cylindrical structure heating furnace body 1, and the bottom of the heating furnace body 1 is provided with three combustion nozzles 2, and two adjacent combustion nozzles 2 are connected to the heating furnace body 1. The center is arranged horizontally at an angle of 120°. The combustion nozzle 2 is respectively connected to a gas inlet pipe 3 and an air inlet pipe 4. The air inlet pipe 4 is connected to a fan 5. The heating The middle part of the furnace body 1 is provided with an intermediate air inlet pipe 6 and is connected to the main air inlet pipe 4, and the intermediate air inlet pipe 6 is provided with an intermediate air regulating valve 7;

[0027] The upper part of the heating furnace body 1 is provided with a heater 8, and the heater 8 is connected with the fan 5 through a hot air inlet pipe 9;

[0028] There are three intermediate air inlet pipes 6, all of which a...

Embodiment 2

[0031] A combustion method for saving energy and reducing NOx in a petrochemical heating furnace, comprising using the heating furnace described in Example 1, with a raw material production and processing capacity of 28t / h, and a combustible gas feed rate of 97Nm 3 / h, total air intake 15000m 3 / h, the air intake of the middle air is controlled at 7% of the total air intake, and the volume content of oxygen in the flue gas after combustion is controlled to be 5.8%.

[0032] After testing: saving gas 18Nm 3 / h, NO in flue gas X Content 185mg / m 3 .

Embodiment 3

[0034] A combustion method for saving energy and reducing NOx in a petrochemical heating furnace, comprising using the heating furnace described in Example 1, with a raw material production and processing capacity of 20t / h, and a combustible gas feed rate of 75Nm 3 / h, total air intake 11000m 3 / h, the air intake of the middle air is controlled at 5% of the total air intake, and the volume content of oxygen in the flue gas after combustion is controlled to be 5.2%.

[0035] After testing: saving gas 15Nm 3 / h, NO in flue gas X Content 175mg / m 3 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided are a combustion method and device for saving energy and reducing NOx for a petrochemical engineering heating furnace. The method includes the steps that air and fuel gas are blown to the bottom and middle of the heating furnace for mixed combustion, and the volume percentage of oxygen in exhaust gas after combustion is controlled to be 4-6%. The heating furnace comprises a heating furnace body with a combustion sprayer at the bottom. The combustion sprayer is connected with a fuel gas intake pipe and an air intake header pipe. The air intake header pipe is connected with a draught fan. A medium air intake pipe is arranged in the middle of the heating furnace body and connected with the air intake header pipe. The medium air intake pipe is provided with a medium air regulating valve. The combustion method can effectively reduce the nitric oxide content and save the amount of fuel gas, thereby saving energy and being environmentally friendly; the structure of the heating furnace is simple; and the effects of saving energy and reducing the nitric oxide content in exhaust gas are remarkable.

Description

technical field [0001] The invention relates to a combustion method and device for saving energy and reducing NOx in a petrochemical heating furnace, belonging to the technical field of chemical equipment. Background technique [0002] At present, in the petrochemical industry, the heating furnace is used to increase the temperature of the material in the production pipeline to meet the process requirements. Regardless of whether natural gas, liquefied gas, dry gas or other fuels are used as the fuel in the heating furnace, due to the characteristics of the combustion process, the nitrogen oxides in the flue gas after full combustion usually exceed the specified content, and the excess air causes increased energy consumption. If the combustion is insufficient, harmful gases such as carbon monoxide and black smoke will be produced, which will not only pollute the environment, but also increase fuel consumption, resulting in unnecessary waste of energy. [0003] The main caus...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F23N3/00F23C7/00F23L15/00F23C5/08
CPCF23C5/08F23C7/00F23C2700/04F23L15/00F23N3/00F23N2221/08F23N2239/04Y02E20/34
Inventor 牟怀堂方贤深张志田张茂林王超袁延志李海彬宋茂润
Owner SHANDONG ORIENT HONGYE CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com