Energy-saving constant-temperature adsorption equipment and method suitable for collecting lithium and rubidium

Abstract

The invention relates to energy-saving constant-temperature adsorption equipment and an energy-saving constant-temperature adsorption method suitable for collecting lithium and rubidium, and belongs to the field of adsorption separation of hydrometallurgy. The energy-saving constant-temperature adsorption equipment comprises a brine drawing system, a desalination and brine collection system, a constant-temperature adsorption system, a tail liquid collection system and a heat circulation heating system. An inlet of the brine drawing system is communicated with a collection source, and an outletof the brine drawing system is communicated with a first brine tank of the desalination and brine collection system. A second brine tank of the desalination and brine collection system is communicated with the constant-temperature adsorption system, the constant-temperature adsorption system is communicated with the tail liquid collection system through a coil pipe assembly of the heat circulation heating system, and the heat circulation heating system is respectively communicated with the desalination and brine collection system and the tail liquid collection system. According to the energy-saving constant-temperature adsorption equipment and the energy-saving constant-temperature adsorption method suitable for collecting the lithium and the rubidium, by adopting a heat pump, the viscosity of brine is reduced, and meanwhile, the problem of low adsorption operation efficiency of salt lake brine with variable air temperature is solved; the coil pipe assembly and the heat pump are usedfor recycling waste heat to heat the brine, so that the temperature rise efficiency of the constant-temperature adsorption system is high, energy consumption is reduced, and the collection efficiencyis improved; and the energy-saving constant-temperature adsorption equipment and the energy-saving constant-temperature adsorption method suitable for collecting the lithium and the rubidium has the characteristics of convenient transportation and the like.

Description

technical field [0001] The invention relates to an adsorption device, in particular to an energy-saving constant-temperature adsorption device and method suitable for collecting lithium rubidium. The invention belongs to the field of adsorption separation of hydrometallurgy. Background technique [0002] In winter, the climate in the Salt Lake area is relatively harsh and belongs to the alpine area. It is not convenient to build factories in these places. However, the existing technology and equipment for extracting lithium rubidium from salt lake brine require a fixed production site, including production equipment for drying in salt fields, removing sodium, potassium, and magnesium, and brine concentration equipment; the temperature difference between morning and evening in the salt lake area is large, and the brine The temperature is low. In the application of the adsorption method to collect lithium-rubidium equipment, the temperature has a great influence on the normal...

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Problems solved by technology

However, the existing technology and equipment for extracting lithium rubidium from salt lake brine require a fixed production site, including production equipment for drying in salt fields, removing sodium, potassium, and magnesium, and brine concentration equipment; the temperature difference between morning and evening in the salt lake area is large, and the brine The temperature is low. In the application of the adsorption method to collect lithium-rubidium equipment, the temperature has a great influence on the normal operation of the brine adsorption system; if the temperature is too low, the adsorption unit will have salt formation during the adsorption operation, causing the adsorption unit to be paralyzed. At the same time, As the temperature changes, the viscosity of salt lake brine also changes, resulting in huge fluctuations in energy consumption at different temperatures and at different times, and the energy consumption is very large, which is not conducive to production management and increases production costs; traditionally, winter is the In the season of denitrification in the salt pan in the salt lake area, the brine is generally not extracted for lithium and rubidium extraction, so the production cycle is long and the economic benefits are relatively low; therefore, the adsorption system can be controlled at a constant temperature in winter. The production of lithium-rubidium collection is of great significance. Constant temperature control is of great significance to the control of equipment energy consumption, the guarantee of production output, the improvement of operating efficiency, the guarantee of the life of collection equipment, and the reduction of production costs.

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