Types and Development Status of Mechanical and Chemical Process Pumps

Chemical process pump is the general name of various pumps in the chemical production process. There are many kinds of chemical process pumps, which can be divided into vane pumps according to their working principles, such as centrifugal pumps, axial flow pumps, mixed flow pumps, partial flow pumps, vortex pumps, etc. Positive displacement pumps, such as reciprocating pumps (including plunger pumps, piston pumps, diaphragm pumps, etc.); Rotary pumps (including screw pumps, liquid ring pump gear pumps, sliding vane pumps, Roots pumps, radial piston pumps, etc.); Other types of pumps, such as injection pumps, such as hammer pumps. According to the production process or product characteristics, it can be divided into high-pressure methylamine pump, cryogenic pump, phosphoric acid slurry pump, etc. In chemical or petrochemical production, pumps operate at high temperatures, low temperatures (or ultra-low

03-22

2024

Domestic high-efficiency composite cooling equipment has remarkable performance

On the 500000-ton/year gas separation unit of Sinopec Yueyang 10 million-ton/year refining and chemical integration project, a national "11th Five-Year Plan" key project with a total investment of 13.4 billion yuan, nine sets of high-efficiency composite cooling equipment independently developed by Luoyang Longhua Heat Transfer Technology Company are adopted, which saves equipment investment of 2 million yuan and annual energy saving of 3.168 million kilowatt-hours compared with the traditional heat exchange scheme of air coolers in series with water coolers. The picture shows the gas separation unit of Yueyang Petrochemical 10 million tons/year refining and chemical integration project using high-efficiency composite cooling equipment.

03-22

2024

Development Status and Prospect of Machinery Industry Standardization

Development status 1. The development of the machinery industry has consolidated the foundation of standardization work. After more than 50 years of development, the machinery industry has formed an industrial system with complete categories, considerable scale and a certain level. Over the years, it has provided a lot of equipment for various departments of the national economy. Whether it is the total economic volume, or the important indicators such as the ability to generate and absorb employment through exports, it shows that the machinery industry has become the pillar industry of our national economy, and shows that China ranks among the world's machinery industry powers. 2. Standardization work has promoted the development of the machinery industry ① to provide norms for the production activities of the machinery industry; ② to build bridges for the application of advanced manufacturing technology; ③

03-22

2024

Integrated sewage treatment equipment in the purchase of skills

Nowadays, with the rapid development of society, our living standards have gradually improved. However, the production of sewage has also increased, for all kinds of sewage. Want the most effective treatment of sewage, it is necessary to use the most appropriate sewage treatment methods. Common use of MBR membrane treatment, A/O treatment, integrated sewage treatment equipment is therefore brilliant in sewage treatment, popular.

03-05

2024

Collection! Sewage treatment must master the basic knowledge encyclopedia!

Water self-purification: the polluted river through physical, chemical, biological and other aspects of the role, so that the concentration of pollutants reduced or transformed, the water body to restore to the original state, or from the initial water quality standards reduced to equal to the water quality standards.

03-04

2024

A variety of sewage treatment principles and technical summary!

Sewage treatment capacity or total BOD5 removal: the total sewage flow (in m3/d) entering the sewage treatment plant every day, which can be used as an indicator of the treatment capacity of the sewage plant. The total amount of BOD5 removed per day can also be used as an indicator of the treatment capacity of the sewage plant. The total amount of BOD5 removed is equal to the product of the treatment flow rate and the difference of BOD5 in and out of the water, in kg/d or t/d.

02-13

2024

Problems and Solutions of Sewage Treatment Design in Villages and Towns

With the implementation of the drinking water safety project in villages and towns, the drinking water conditions of rural residents have been greatly improved, and the discharge of domestic sewage is increasing. The environmental problems of villages and towns have not been widely paid attention to, lack of sufficient sewage treatment facilities and sewage collection pipe network, and the task of domestic sewage treatment is very arduous. The treatment mode of domestic sewage in villages and towns is different from that of urban sewage treatment, which can not be copied and copied mechanically. With the revolution of rural toilets, the collection and treatment of sewage in villages and towns need to be solved urgently.

02-01

2024

How to make the biogas utilization system safe operation?

During the operation of biogas utilization system, the most important problem is safety, because there are combustible gases and toxic gases in biogas. If strict operation and safety inspection are not carried out, explosion and poisoning accidents may occur. In the operation of sewage treatment plants, explosions and poisoning incidents have occurred more than once, and even casualties have occurred. These painful lessons make us dare not slack off for a moment in the operation process, the relevant provisions of the biogas utilization system must be strictly observed. The following aspects should be noted.

01-21

2024

Sewage treatment industry, how to achieve "green advanced"?

"Up to now, my country has built nearly 5000 urban and county sewage treatment plants, with a total treatment capacity of more than 0.25 billion cubic meters per day, and an urban sewage treatment rate of more than 98%." The "Implementation Opinions" pointed out that in recent years, my country's sewage collection and treatment facilities have been continuously improved, but "shortcomings" such as low sewage collection efficiency, more greenhouse gas emissions in the sewage treatment process, and low energy resource recovery and utilization still exist.

01-18

2024

There are still bottlenecks in technology, facilities, funds, etc., how to break the situation of rural domestic sewage treatment?

Rural domestic sewage refers to the sewage generated in the daily life of rural areas, as well as the sewage generated by business activities such as rural public welfare undertakings, public services and homestays, catering, washing, beauty salons, etc.

01-10

2024

Rural domestic sewage treatment: biogas sewage treatment technology

Domestic sewage purification biogas digester is a new type of structure for decentralized treatment of domestic sewage. It is suitable for towns that are unable to build sewage treatment plants in the near future, or units outside the urban sewage pipe network, office buildings, residential areas, tourist attractions, houses, hotels, schools and public toilets Wait. Studies have shown that the winter groundwater temperature can be maintained in 5~9 ℃ above the region, or in the pool built solar greenhouse temperature up to this temperature area, can use the purification pool to deal with domestic sewage and feces.

09-12

2023

What are the sewage treatment equipment?

Air flotation machine is a kind of equipment used for water quality clarification, which can effectively remove the frivolous flocs that are difficult to deposit in sewage. It has the characteristics of small footprint, stable treatment effect, simple operation, less mud production, good water effect and low operating cost.

02-17

2023

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