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System and method for recycling and efficiently producing flue gas by magnesium desulfurization

A technology of magnesium desulfurization and resource utilization, which is applied in the system field of high-efficiency output of coal-fired flue gas magnesium desulfurization and resource utilization, and can solve problems such as groundwater pollution

Pending Publication Date: 2021-03-19
邢台润天环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time that the net flue gas discharges up to the standard, all the substances entering the system are extracted from waste to treasure, from inferior to superior, and realize the discharge of "waste residue", "waste water" and "zero" from the root, and completely solve the problem of The existing technology solves the major problems of solid waste disposal and groundwater pollution by soluble salts. While eliminating environmental hazards, it also imprints a high rate of return on coal-fired flue gas desulfurization as an "emerging desulfurization industry"

Method used

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  • System and method for recycling and efficiently producing flue gas by magnesium desulfurization
  • System and method for recycling and efficiently producing flue gas by magnesium desulfurization
  • System and method for recycling and efficiently producing flue gas by magnesium desulfurization

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Effect test

Embodiment 1

[0086]Example 1:figure 1 It can be seen that the present invention provides the basis of a system of high-efficiency output of flue gas magnesium method desulfurization resource, which is composed of a plurality of chemical cells in accordance with the chemical reaction process, characterized in that:

[0087]P1: MG (OH) in turn by the slurry unit, magnesium oxide resolution unit2Type cell, magnesium method desulfurization unit, aeration unit, filtration unit, an amino unit, filtration 1 unit, washing 1 unit, dry pulverization unit composition industrial magnesium hydroxide Mg (OH)2Product production subsystem;

[0088]P2: Compared with lime mortify unit, purifying unit, evaporase 1 unit, filter 2 unit, dry 1 unit, and pulverize 1 unit to form a gypsum CASO4Product production subsystem;

[0089]P3: Magnesium carbonate 4mgco is composed of a dissolved unit, an evaporated ammonia 2 unit, a filtration of 3 units, a drying 2 unit, and a pulverized 2 unit.3· MG (OH)2· 4h2O product production subs...

Embodiment 2

[0091]Example 2:figure 2 It can be seen that the present invention provides an optimization embodiment of a system for efficient output of flue gas magnesium method desulfurization resource, and is associated with a plurality of chemical cells in accordance with the chemical reaction process, characterized in that:

[0092]P1: MG (OH) in turn by the slurry unit, magnesium oxide resolution unit2Type cell, magnesium method desulfurization unit, aeration unit, filtration unit, an amino unit, filtration 1 unit, washing 1 unit, dry pulverization unit composition industrial magnesium hydroxide Mg (OH)2Product production subsystem;

[0093]P2: Compared with lime mortify unit, purifying unit, evaporase 1 unit, filter 2 unit, dry 1 unit, and pulverize 1 unit to form a gypsum CASO4Product production subsystem;

[0094]P3: Light carbonate 4mgco composed of dissolved units, evaporase 2 units, filtration 3 units, dried 2 units, pulverized 2 units, calcination 2 units3· MG (OH)2· 4h2O product production s...

Embodiment 3

[0096]Example 3: Referenceimage 3As shown, the present invention provides an optimization embodiment of a method of high efficiency of flue gas magnesium method desulfurization resource-efficient output, and a plurality of chemical units are sequentially associated in accordance with the chemical reaction process, characterized in that:

[0097]Step S1: Using pure water modulfurizing solution MG (OH)2, Washing solution 2 modulated desulfurization Mg (OH) for washing liquid 2 modulated desulfurization of calcium sulfate filter material with condensed water2Slurry and desulfurization - adding an appropriate amount of light burning powder and washing liquid 2 of the two units, stirring the ash as a pulp; adding the filtration of the filtration 2 unit in a sealed magnesium oxide encapsulating unit (equivalent to magnesium oxide) 2, and pump the slurry of the gel units into the slurry into Mg (OH)2Slurry, pass steam heating The ammonia residue in the filtrate 2 (in the filtrate 2 with ammon...

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Abstract

The invention discloses a system and a method for recycling and efficiently producing flue gas by magnesium desulfurization, and belongs to the technical field of atmospheric pollution treatment. Purewater is used as system water, impurities and COD are strictly limited, the purity of a desulfurization waste liquid conversion target object is guaranteed, and ammonia is absorbed ingeniously through ammonia circulation and ammonia supplementing means of reaction of ammonium bicarbonate and magnesium hydroxide filter materials, so that ammonia is evaporated and absorbed to form a desulfurizationsolution, namely magnesium sulfate, and the desulfurization solution is continuously converted into high-content, high-performance and high-value chemical products such as magnesium hydroxide, gypsumand light magnesium carbonate. All substances entering the system are subjected to ordered resource extraction from waste to treasure and from inferior to superior, so that 'waste residue', 'wastewater' and 'zero' discharge is realized fundamentally, and the problems of solid waste treatment and groundwater pollution caused by soluble salt in the prior art are thoroughly solved; and the harm to the environment is eliminated; and meanwhile, a mark of 'emerging desulfurization chemical industry' with a high return rate is also printed for coal-fired flue gas desulfurization.

Description

Technical field[0001]The present invention belongs to the technical field of air pollution governance, in particular, to a system and method for efficient output of desulfurization resultaceidization resulterization in coal-fired flue gas magnesium.Background technique[0002]my country's energy status is that it is suitable for my country's national conditions for China's energy status is lack of oil, poor, and coal. Coal combustion flue gas emissions have a great impact on my country's gas pollution. In order to solve this problem, my country has launched a very stringent ultra-low emission policy and regulatory means in recent years, and atmospheric pollution has been improved. However, the contradiction system of coal-fired and integrated environment has not yet formed a perfect form. The whole stagnation of the desulfurization product is scrapped on the desisulfurization cost, the disposal of the wastewater is still in a very heavy position, which plaster into the company. Operat...

Claims

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Application Information

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IPC IPC(8): C01D5/10C01F5/22C01F11/18C01D3/24C01D3/14C01D3/06C05G1/00B01D53/80B01D53/50
CPCC01D5/10C01F5/22C01F11/18C01D3/24C01D3/06C01D3/14C05C1/00B01D53/502B01D2258/0283B01D2251/402B01D2251/604C05C3/00C05D1/02
Inventor 彭振超韩默先方晟郭清韩硕怀刘艳霞刘志斌王勇跃李增杰赵柏然彭跃雷昕
Owner 邢台润天环保科技有限公司
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