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Preparation method of active coke

A technology of activated coke and semi-coke, which is applied in the field of coal chemical industry, can solve the problems of low surface polarity, low heavy metal adsorption capacity, and weak heavy metal binding capacity, etc., and achieve the effect of increasing iodine value

Inactive Publication Date: 2017-09-15
嘉兴市寸净净水设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the structure of activated coke is mainly carbon, the surface polarity is low, the binding ability with heavy metals is weak, and the adsorption capacity for heavy metals in wastewater is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Heat the coal raw material at 400°C-450°C for 5-9 hours, raise the temperature to 650°C-700°C within 0.5-2 hours, and heat for 0.5-6 hours;

[0025] (2) Pulverizing the coal semi-coke in step (1) to a suitable particle size, and the suitable particle size range is 1-20 mm;

[0026] (3) Mix the crushed coal particles with sodium sulfide aqueous solution (1 g / ml, 50°C, PH=5.5) to make wet coal particles, the mass ratio of sodium sulfide to coal particles is 1:20, and the sodium sulfide aqueous solution Sprayed by an ultrasonic sprayer, this step is carried out in a running drum;

[0027] (4) Keep the wet coal particles in step (3) at 100°C-120°C for 1-2 hours, then raise the temperature to 200°C-250°C at a speed of 3-5°C / min, and stay until the coal particles Moisture content below 10%;

[0028] (5) Screen the activated material, the particle size range is 1-20mm;

[0029] (6) Add additives to the activated material and granulate to make the finished activated coke...

Embodiment 2

[0032] (1) Heat the coal raw material at 400°C-450°C for 5-9 hours, raise the temperature to 650°C-700°C within 0.5-2 hours, and heat for 0.5-6 hours;

[0033] (2) Pulverizing the coal semi-coke in step (1) to a suitable particle size, and the suitable particle size range is 1-20 mm;

[0034] (3) Mix the crushed coal particles with potassium sulfide and zinc sulfide aqueous solution (potassium sulfide content is 0.1 g / ml, zinc sulfide content is 0.5 g / ml, 30°C, PH=5) to make wet coal particles , the mass ratio of potassium sulfide, zinc sulfide and coal particles is 1:5:20, and potassium sulfide and zinc sulfide aqueous solution are sprayed out by an ultrasonic atomizer, and this step is carried out in the drum in operation;

[0035] (4) Keep the wet coal particles in step (3) at 100°C-120°C for 1-2 hours, then raise the temperature to 200°C-250°C at a speed of 3-5°C / min, and stay until the coal particles Moisture content below 10%;

[0036] (5) Screen the activated material...

Embodiment 3

[0040] (1) Heat the coal raw material at 400°C-450°C for 5-9 hours, raise the temperature to 650°C-700°C within 0.5-2 hours, and heat for 0.5-6 hours;

[0041] (2) Pulverizing the coal semi-coke in step (1) to a suitable particle size, and the suitable particle size range is 1-20 mm;

[0042] (3) Mix the crushed coal particles with sodium sulfide and sodium hydrosulfide aqueous solution (the content of sodium sulfide is 5 g / ml, the content of sodium hydrosulfide is 5 g / ml, 60°C, PH=4.5) to make wet coal Granules, the mass ratio of sodium sulfide, sodium hydrosulfide and coal particles is 1:1:4, sodium sulfide, sodium hydrosulfide aqueous solution is sprayed out through an ultrasonic sprayer, and this step is carried out in the agitator in operation;

[0043] (4) Keep the wet coal particles in step (3) at 100°C-120°C for 1-2 hours, then raise the temperature to 200°C-250°C at a speed of 3-5°C / min, and stay until the coal particles Moisture content below 10%;

[0044] (5) Scre...

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PUM

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Abstract

The invention belongs to the field of coal chemical industry, and more specifically relates to a preparation method of active coke. The preparation method comprises following steps: 1, a coal raw material is subjected to carbonization at 400 to 700 DEG C so as to obtain semicoke, wherein carbonization time is controlled to be 6 to 12h; 2, semicoke obtained in step 1 is smashed into particles of an appropriate particle size, wherein the particle size ranges from 1 to 20mm; 3, the coal particles obtained via smashing are mixed with a metal sulfide aqueous solution so as to obtain wet coal particles; 4, the wet coal particles are subjected to reaction at 100 to 250 DEG C until drying is realized so as to obtain an activated material; 5, the activated material is sieved so as to obtain a product with a particle size ranging from 1 to 20mm; and 6, an additive is added into the product, and granulation is carried out so as to obtain an active coke finished product. When the active coke is used for treating waste water containing a relatively large amount of heavy metals such as electroplating waste water, the metal sulfide in the pores of the active coke is dissolved in water, and reaction of the metal sulfide with heavy metals in water is realized rapidly, precipitate or floccule is generated, and the precipitate or floccule is intercepted in the pores of the active coke, so that most of the heavy metals is removed.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and in particular relates to a preparation method of active coke. Background technique [0002] The sources of electroplating wastewater are generally: (1) plating cleaning water; (2) waste electroplating solution; (3) other wastewater, including washing the floor of the workshop, scrubbing plate washing water, condensed water from ventilation equipment, and leakage from plating tanks. Or various tank fluids and drains of "running, popping, dripping, and leaking" caused by improper operation and management; (4) Equipment cooling water, which has not been polluted except for the temperature rise during use. The water quality and quantity of electroplating wastewater are related to the process conditions of electroplating production, production load, operation management and water use methods and other factors. The water quality of electroplating wastewater is complex and its composition is d...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/62C02F103/16
CPCB01J20/20B01J20/0229B01J20/0244B01J20/0285B01J20/045B01J20/28097C02F1/283C02F1/62C02F2103/16
Inventor 陈阳
Owner 嘉兴市寸净净水设备有限公司
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