Dynamic Behavior of Liquid Flow Rate from Nozzles in Jet Scrubbers of Pulp Production
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2021, Vol 13, Issue 2
Abstract
It is shown that the modern development of pulp production technology is associated with the development of gas-liquid systems equipment. Such equipment provides the main technological processes of pulp cooking and regeneration of chemical reagents. Furthermore, this equipment, designed to recover chemical reagents and reduce their emissions into the environment, is part of the technological process. The use of scrubbers in pulp production has an advantage over many other industries, since it uses a closed liquor regeneration cycle. Currently, studies of the processes occurring in scrubbers of different types are becoming more numerous and fundamental. This paper is devoted to the development of jet scrubbers. These devices have a number of properties that do not have scrubbers of other types. They do not create resistance to the gas flow in the flue; they have a gravitational property due to ejection. Only jet scrubbers create the necessary conditions for the stability of the gas flow and have a jet effect that allows to significantly increase the efficiency of emissions cleaning. To implement the jet effect and intensify the technological equipment operation it is required to describe transfer processes in jet scrubbers with regard to polydisperse structure of drop flow and features of liquid splitting up into drops by centrifugal-jet nozzles. Scientific works devoted to the problem of realization of the jet effect showed the need to study the dynamics of liquid splitting in centrifugal-jet nozzles, which create a drop-filled jet with a large opening angle. The research purpose is to study the speed of the initial movement of drops in the area immediately after the splitting section of the continuous jet of liquid flowing from the nozzle. A photographic technique with two spark lamps was used for the experiment. At the same time, the distribution of irrigation density was controlled. The results of measuring the distributions of absolute speed of drops and irrigation density were compared with each other and the function of liquid speed distribution in the cross section of the gas-liquid jet of the jet scrubber was determined. Based on the obtained data, a theoretical model was developed to determine the initial speed of drops of centrifugal jet nozzles, an indicator required for the development of new jet scrubbers. The results can be applied to improve the technological processes of pulp production. For citation: Aniskin S.V., Kurov V.S. Dynamic Behavior of Liquid Flow Rate from Nozzles in Jet Scrubbers of Pulp Production. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 2, pp. 180–193. DOI: 10.37482/0536-1036-2021-2-180-193
Authors and Affiliations
S. V. Aniskin, V. S. Kurov
Keywords
Related Articles
- EP ID EP693568
- DOI https://doi.org/10.37482/0536-1036-2021-2-180-193
- Views 215
- Downloads 0
Features of Designing Wooden Bridges of the Forest Complex
The supply of the national economy with forest resources is directly related to transport accessibility, the condition and development of the road network of forest-rich territories. Construction requirements for year-ro...
Forest Plantations on the Drained Bottom of the Aral Sea
Information is provided on the current state of the drained bottom of the Aral Sea. It is noted that the Amu Darya and Syr Darya rivers dumped 55–60 km3 of water into the sea until 1966. The waters of Syr Darya ceased to...
Increasing the Resource Potential of Wood Raw Materials
According to the strategy for the development of the forestry complex of the Russian Federation until 2030, approved by Order of the Prime Minister of Russia no. 312r dated February 11, 2021, the contribution of the fore...
Radial Growth of Spruce (Picea abies (L.) Karst. × P. obovata Ledeb.) in the Conditions of Mining Impact
A dynamic of radial growth of spruce near a quarry of kimberlite pipes is investigated in this study. The quarry is considered as a potential source of anthropogenic impact. The research takes place at the central part o...
An Indicator for Assessing the Effectiveness of Organizing Forest Fire Protection
The article briefly analyzes the main indicators used to assess the effectiveness of the organization of forest fire protection in the Russian Federation. The need to improve approaches to such an assessment has been sub...