“The cleverest woman is a no-nothing woman†is a familiar saying among the Chinese people. The meaning of this sentence is also practical for the development of forestry. Why do you say that? Because forestry needs to be developed, excellent forest germplasm resources are needed as a support. The richer the species of forest germplasm resources and the greater the number, the more ecological construction and ecological security in the region will be guaranteed, and it will also create better human development. Material conditions. Therefore, all regions currently pay great attention to the investigation, collection, preservation, and utilization of forest germplasm resources, and actively use the forest germplasm resource bank to invest in these important tasks. The protection and use of forest germplasm resources is not a simple matter, especially in the preservation of forest germplasm resources, it needs to use the most advanced science and technology to achieve. As a mature application product of tree germplasm resource conservation technology, the forest germplasm resource pool has played an increasingly important role in the related work development of forest germplasm resources. Many people think that the application of forest germplasm resource pool has only one goal, that is to achieve the medium and long-term preservation of forest germplasm resources, maintain the good vigor and vitality of forest germplasm resources, but in fact the goal of the forest germplasm resource pool There is more than one, but five. The five goals of the Forest Germplasm Resource Bank are the preservation center, which is also a research center, exchange center, science popularization center, and exhibition center. The preservation is the long-term effective preservation of the collected tree germplasm resources that are no longer suitable for in situ preservation in order to avoid their disappearance; on the other hand, these preserved forest germplasm resources are ultimately to be used for the development of forestry. Provide materials, so the second goal of the forest germplasm resource pool is to study; Thirdly, with the development of information technology, the forest germplasm resource pool has already achieved networking, so it can also become a good exchange center. , to achieve resource sharing, information exchange; the fourth forest germplasm resource bank is a display center, many forest germplasm resources preserved can be clearly and completely presented to everyone, easy to find at any time; the fourth forest germplasm resource bank or a science center It can display the excellent forest germplasm resources in the region and provide an important basis for understanding the local forestry resources. Float valve is one of the tray structures widely used in China at present. It has outstanding excellent performance, and its main characteristics are: Strip Guide Float Valve,Stainless Steel Float Valves,Acid Resistant Steel Float Valve,Strip Guided Float Valve Kit Yangzhou Tongyang Chemical Equipment Co., Ltd. , https://www.tongyangchemic.com
â‘´ Large operating flexibility
As the valve plate can rise and fall freely, it can adapt to the change of air volume from big to small, and the air gap speed is almost constant. It can also maintain high separation efficiency in a wide operating range with frequent load changes.
⑵ High separation efficiency
In practical application, the tray efficiency can reach 60~70%, 10~15 higher than that of bubble cap tray, and it is still very high at low load. Due to the high efficiency, the product quality is improved accordingly.
(3) Large processing capacity
Because the arrangement of float valves is much more compact than that of bubble cap tower, the opening rate is increased. In addition, the air flow blows into the liquid level in the horizontal direction, so the entrainment of foam is low, which can improve the air flow and increase the production capacity. The production capacity is 20~40% higher than that of bubble cap tower.
(4) Pressure drop is small
The air flow through the float valve shrinks, expands and turns only once, and the pressure drop is lower than that of the bubble cap tray. The pressure drop of each tray in the atmospheric tower is only 3-5 mm Hg.
In addition, it has simple structure and low cost; Long service life, no fear of dirty materials; Convenient installation and use.
Performance characteristics of float valve tray:
(1) The processing capacity is smaller than tongue type, sieve plate, and larger than bubble cap tray;
(2) Large operational flexibility;
(3) The pressure drop of the dry plate is larger than that of the tongue type, the sieve plate tray is larger, the pressure drop is smaller than that of the bubble cap tray, and the liquid level gradient on the tray is smaller;
(4) The entrainment of fog is small;
(5) Simple structure and convenient installation.
October 06, 2024