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Method for absorbing and recycling yellow phosphorus burning heat by using heat-conducting oil

A heat-conducting oil and yellow phosphorus technology, which is used in heat storage heaters, fluid heaters, lighting and heating equipment, etc., can solve the problems of unseen use in the field of phosphorus chemical industry, avoid hidden dangers of overpressure, save energy, and improve efficiency. economic effect

Inactive Publication Date: 2014-12-17
广西利达磷化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphorus chemical industry has not seen its utilization

Method used

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  • Method for absorbing and recycling yellow phosphorus burning heat by using heat-conducting oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Concentration of phosphate mother liquor and drying of phosphate

[0023] Add the alkyl biphenyl type heat transfer oil to the high-level and low-temperature heat-conducting oil tank I, and then open the valve I of the high-level and low-temperature heat conduction oil tank I, the valve III of the jacket outlet of the yellow phosphorus combustion furnace, and the valve IV of the oil tank II. Close the valve II at the outlet of the jacket of the yellow phosphorus combustion furnace, the low-temperature heat transfer oil flows into the jacket of the yellow phosphorus combustion furnace to absorb heat, and controls the flow rate of the valve III at the outlet of the yellow phosphorus combustion furnace to control the temperature of the heat transfer oil at the outlet of the jacket of the yellow phosphorus combustion furnace. At 200°C, the circulating oil pump is started to pump the low-temperature heat-conducting oil from tank II to the high-level low-temperature he...

Embodiment 2

[0024] Example 2: Concentration of phosphate mother liquor

[0025] Add the alkylbenzene type heat transfer oil to the high-level low-temperature heat-conducting oil tank I, and then open and close the valve I of the high-level low-temperature heat-conducting oil tank I, the valve III of the jacket outlet of the yellow phosphorus burner, and the valve IV of the oil tank II. Valve II at the outlet of the jacket of the yellow phosphorus combustion furnace, low-temperature heat transfer oil flows into the jacket of the yellow phosphorus combustion furnace to absorb heat, and controls the flow rate of the valve III at the outlet of the jacket of the yellow phosphorus combustion furnace to control the temperature of the heat transfer oil at the outlet of the jacket of the yellow phosphorus combustion furnace 180 ℃, start the circulating oil pump to pump the low-temperature heat transfer oil from the oil tank II to the high-level low-temperature heat transfer oil tank II, and cyclically...

Embodiment 3

[0026] Example 3: Concentration of phosphate mother liquor, drying of phosphate and steam preparation

[0027] Add the biphenyl / diphenyl ether low-melting mixture heat transfer oil to the high-level and low-temperature heat-conducting oil tank I, and then add the valve I of the high-level and low-temperature heat conduction oil tank I, the valve III and the tank II of the jacket outlet of the yellow phosphorus burner Open the valve IV, close the valve II at the outlet of the yellow phosphorus combustion furnace jacket, the low-temperature heat transfer oil flows into the yellow phosphorus combustion furnace jacket to absorb heat, and controls the flow rate of the valve III at the outlet of the yellow phosphorus combustion furnace jacket to control the yellow phosphorus combustion furnace jacket The temperature of the heat transfer oil at the outlet is 360°C, and the circulating oil pump is started to pump the low temperature heat transfer oil from the oil tank II to the high-level...

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Abstract

The invention discloses a method for absorbing and recycling yellow phosphorus burning heat by using heat-conducting oil. The heat-conducting oil of which the boiling point is 160 to 400 DEG C serves as a heat-conducting medium, an oil circulating pump pumps the heat-conducting oil into a burning furnace jacket, and the high-temperature heat-conducting oil absorbing the yellow phosphorus burning heat is conveyed into an evaporator, a steam generator and an air heater to prepare concentrated solution or steam or dry air. Technical requirements of different temperature heating and cooling can be met by the method, so the potential hazard of over pressure caused by phase change gasification can be effectively avoided, the operation pressure and the safety requirement of a high-temperature heating system are greatly reduced, the reliability of a system and equipment is improved, high-temperature heat, middle-temperature heat and low-temperature heat are recycled, the recovery rate of the heat is improved, the problem of heat required in a technical flow can be solved, a special coal boiler, an afterheat boiler and a cooling water device are omitted, the yellow phosphorus burning heat yellow phosphorus burning heat cost is reduced, energy resources are saved, and the method has better economic benefit, social benefit and environment-protecting benefit.

Description

Technical field [0001] The invention belongs to the technical field of heat energy recovery and utilization, and relates to a method for heat energy recovery and utilization, in particular to a method for using heat transfer oil to absorb and recover yellow phosphorus combustion heat energy and reuse. Background technique [0002] Phosphoric acid and phosphate are important components of the chemical industry. The production methods of phosphoric acid are divided into thermal process phosphoric acid and wet process phosphoric acid. Because thermal phosphoric acid has the advantages of high product concentration and less impurities, it has been widely used in phosphorus chemical enterprises. The main processes of thermal phosphoric acid production process are yellow phosphorus melting, yellow phosphorus burning and hydration absorption. Chinese patent CN201010127125.2 directly prepares food-grade high-purity phosphoric acid from yellow phosphorus. The liquid phosphorus is contin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H7/00
Inventor 林军吴小海何忠华马钊松黄新兴韦仕能苏杰文王文营彭艳霞
Owner 广西利达磷化工有限公司
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