Yingkou Dust Removal Equipment Introduction

Dust removal equipment 

Dust removal equipment refers to the equipment that separates dust from the flue gas, also known as dust collector or dust removal equipment. The dust removal equipment utilizes the dust removal water pipe and the pressure air pipeline in the underground, adds certain additives in the water, introduces the wind pressure, completes a series of technological processes through special equipment, generates foam, and sprays the dust source through the distributor and the nozzle bracket assembly. .

China's electrostatic dust removal technology has matured, and the main technical level has entered the international advanced ranks.

1. Industry technical level and characteristics

The technical level and characteristics of the industry are mainly in the following aspects:

(1) Bio-nano-film dust suppression is included in the "Advanced Technical Collection of Air Pollution Prevention and Control" issued by the Ministry of Science and Technology and the Ministry of Environmental Protection.

Bio-nano-film dust suppression technology, bio-nano film is a double-ionosphere film with nano-layer spacing, which can maximize the ductility of water molecules and has strong charge adsorption; spray bio-nano film on the surface of materials. Attract and agglomerate small particles of dust to polymerize into large granular dust particles, which will increase in self-weight and settle.

(2) Cloud and dust suppression was included in the "Advanced Technical Collection of Air Pollution Prevention and Control" issued by the Ministry of Science and Technology and the Ministry of Environmental Protection.

The cloud dust suppression technology is to produce ultra-fine dry mist of 1μm~100μm by high-pressure ion atomization and ultrasonic atomization; the ultra-fine dry mist particles are fine, fully increase the contact area with the dust particles, and the water mist particles collide with the dust particles and Coagulation, formation of agglomerates, agglomerates continue to become larger and heavier, until the final natural settling, to achieve the purpose of eliminating dust.

(3) Wet dust collection was included in the "Advanced Technical Collection of Air Pollution Prevention and Control" issued by the Ministry of Science and Technology and the Ministry of Environmental Protection.

Wet dust collection technology absorbs dust-laden air by pressure drop, and removes dust under the dual action of centrifugal force and mixing of water and dust gas; the unique design of the unique impeller provides higher dust removal efficiency.

(4) Electrostatic precipitator technology is in the mature application stage, but the emission concentration is difficult to meet the new control standard requirements.

China's electrostatic dust removal technology has matured, and the main technical level has entered the international advanced ranks.

Electrostatic precipitator technology is more mature in the application field of high temperature flue gas dedusting treatment in thermal power plants. Due to the limitation of the dust removal mechanism, the dust removal efficiency of the electrostatic precipitator technology has been greatly improved. The new electrostatic precipitator system can generally control the emission concentration to be around 100 mg/m3. At the same time, the dust removal efficiency is greatly affected by the change of the smoke specific resistance. In actual operation, the uncertainty of the fuel burning causes the flue gas parameters of the working condition to deviate from the design value, so that the soot emission concentration is often much higher than the designed emission control value. As the country's requirements for smoke pollution control continue to increase, the emission requirements for fine dust are becoming more stringent, and electrostatic dust removal technology is facing severe challenges.

(5) Bag dust removal technology is in the stage of rapid development

Compared with electrostatic precipitator technology, bag dust removal technology started late. Through the introduction of foreign technology and digestion and absorption, China's bag-type dust removal technology has made great progress. Various bag-type dust collector technologies are becoming more advanced, perfect and complete. Filter material technology, cleaning technology and accessories have gradually formed an industrial scale. The performance of some bag type dust removal equipment has reached the international advanced level. After dust-containing exhaust gas filtered by bag dust removal, the dust emission concentration can reach 5mg/m3, and the investment, operation and maintenance costs are gradually reduced, and the life of the filter bag is continuously extended. With the continuous improvement of China's requirements for smoke pollution control, bag dust removal technology has been more and more widely used, and is in a stage of rapid development.

(6) Electric bag and electric bag compound technology is emerging

As the country's requirements for industrial flue gas pollution control continue to increase, electrostatic precipitator technology faces serious challenges. Some enterprises that used electrostatic precipitator equipment have to transform electrostatic precipitator equipment into bag dust removal equipment because they do not meet emission requirements. This method is abbreviated as “electrical change bag”. At the same time, considering that most of the existing high-temperature industrial flue gas dedusting in China uses electrostatic precipitator equipment, the existing pre-investment has been large, and some domestic dust-removing equipment mainframe manufacturers adopt “electric bag compounding”. The dust removal technology transforms the rear end of the original electrostatic precipitator into a bag filter, and the electrostatic dust removal is “electric bag composite dust removal”.

2. Industry-specific business model

The bag filter is the core equipment in the dust removal system. The system design and configuration are professional, and the customer needs are highly personalized. Generally, it is required to customize the customization for specific applications. Production companies in the industry generally obtain orders through bidding, and organize product design, production, installation and commissioning according to user needs. The production company is mainly responsible for the design and production of core components, and the matching parts are obtained by purchasing from professional manufacturers; the production enterprises assemble various core components and matching parts into products according to the order requirements. In this mode, the production of core components is carried out within the production enterprise, which guarantees the control of know-how and implements strict quality control procedures in accordance with higher quality standards. Product quality can be effectively guaranteed, but due to capacity constraints, The ability to undertake orders is subject to a certain degree of restriction.

3. Periodic, regional or seasonal characteristics of the industry

With the improvement of national environmental protection requirements, the application requirements of bag-type dust removal equipment are constantly expanding. The industry is in a period of stable development, with good growth momentum and no obvious cyclical characteristics. As an effective means of fine dust emission control, bag filter is widely used in more than 20 industries such as cement, steel, non-ferrous metals, electric power, machinery, chemicals, municipalities, etc. 48, the periodicity of downstream industries is not completely coincident, can be certain To the extent that the operating fluctuations of the industry are ironed out, the cyclical fluctuations of some downstream industries have little effect on the market demand for baghouse dust removal equipment. Due to the relatively uneven distribution of customers in downstream industries such as cement, steel, non-ferrous metals and electric power, the location of the customer's project is the location of the business in the industry. Therefore, the industry has certain regional characteristics. At the same time, there are no obvious seasonal characteristics in the industry.

The dust removal equipment is composed of a box body and a foam generating device, a foam dispenser, a foam nozzle and a bracket. The system is used together with a mineral foam dust suppression special liquid to effectively control the dust of the mining face and the tunnel.