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Slurry fuel coal tar pitch water slurry and preparation method thereof

A coal tar and fuel technology, applied in the field of slurry fuel coal tar tar pitch water slurry and its preparation, can solve the problems of intractable treatment, high pollution, residue and waste water pollution, etc., and achieve energy saving, low pollutant discharge, atomization good performance

Inactive Publication Date: 2010-07-21
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a slurry fuel coal tar pitch water slurry and a preparation method thereof to solve the problems of high pollution, difficult-to-handle residues and waste water polluting the environment formed during the carbonization process of coal, and realize the purpose of saving energy and reducing pollutant discharge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The medium-temperature coal tar pitch fragments with a softening point of 84 °C were frozen at -30 °C for 24 hours, crushed and sieved with a 60-mesh standard sieve to obtain coal tar pitch powder.

[0027] Add 0.5g of sodium dodecylbenzenesulfonate to 34.5g of untreated coking wastewater whose COD is 1852mg / L, ammonia nitrogen is 96mg / L, cyanide is 21mg / L, and volatile phenol is 368mg / L. Then add 65g of coal tar pitch powder under high-speed stirring, and stir evenly to prepare coal tar pitch water slurry. The apparent viscosity of the coal tar pitch water slurry is 810mPa s (the shear rate is 100s -1 ), the low calorific value is 21.4MJ / Kg.

Embodiment 2

[0029] The medium-temperature coal tar pitch fragments with a softening point of 89 °C were frozen at -30 °C for 24 hours, crushed and sieved with a 60-mesh standard sieve to obtain coal tar pitch powder.

[0030] Add 1.0g of sodium lauryl sulfate to 32g of untreated coking wastewater with a COD of 1852mg / L, ammonia nitrogen of 96mg / L, cyanide of 21mg / L, and volatile phenol of 368mg / L, stirring and dissolving, and then Add 67g of coal tar pitch powder under stirring, and stir evenly to prepare coal tar pitch water slurry. The apparent viscosity of the coal tar pitch water slurry is 945mPa s (the shear rate is 100s -1 ), the low calorific value is 23.6MJ / Kg.

Embodiment 3

[0032] The high-temperature coal tar pitch fragments with a softening point of 104°C were frozen at -30°C for 24 hours, crushed and sieved with a 60-mesh standard sieve to obtain coal tar pitch powder.

[0033] Add 1.5g of sodium petroleum sulfonate to 30.5g of pre-biochemical coking wastewater with COD of 1247mg / L, ammonia nitrogen of 67mg / L, cyanide of 12mg / L, and volatile phenol of 142mg / L, stir and dissolve, and then add it under high-speed stirring 68g of coal tar pitch powder was stirred evenly to prepare a coal tar pitch water slurry. The apparent viscosity of the coal tar pitch water slurry is 1014mPa s (the shear rate is 100s -1 ), the low calorific value is 24.2MJ / Kg.

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Abstract

The invention discloses slurry fuel coal tar pitch water slurry and a preparation method thereof. The composition and the content of the slurry fuel are as follows: 60-70% of coal tar pitch, 29.5-38% of coking waste water and 0.5-2% of dispersing agent. The method comprises the following steps: a coal tar pitch fragment of which the softening point is 85-95 DEG C or 100-110 DEG C is frozen for 24 hours under the brittle temperature of -30 DEG C; after ground, the coal tar pitch fragment is screened by a screen of 60 meshes to obtain coal tar pitch powder; then, dispersing agent is stirred and dissolved in the coking waste water, the coal tar pitch powder is added under high-speed stirring, and evenly stirring to obtain the coal tar pitch water slurry. The invention utilizes unmanageable high-pollution residue and waste water of coal in the dry distillation process to prepare environmental-friendly liquid fuel which has the characteristics of favorable flowability and atomization performance, high combustion efficiency, low pollutant discharge and the like, thus solving the environmental pollution problem existing for a long term in the dry distillation process of coal, realizes the purpose of energy saving and emission reduction, and being capable of replacing oil, coal or gas combustion in the fields, such industrial boilers, power station boilers, industrial stoves and the like.

Description

technical field [0001] The invention relates to a slurry fuel coal tar pitch water slurry and a preparation method thereof, in particular to a slurry fuel coal tar pitch water slurry prepared by using coking wastewater and coal tar pitch powder and a preparation method thereof. Background technique [0002] Coking wastewater is the wastewater formed during the high-temperature dry distillation of coal, gas purification, and chemical product refining. It contains dozens of inorganic and organic compounds. Among them, the inorganic compounds are mainly ammonia salts, thiocyanides, sulfides, Compounds, etc. In addition to phenols, organic compounds also include monocyclic and polycyclic aromatic compounds, heterocyclic compounds containing nitrogen, sulfur, and oxygen. Coking wastewater has complex components, and has the characteristics of high pollutant concentration, high chroma, high toxicity and stable properties. It is a typical high-concentration industrial wastewater co...

Claims

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Application Information

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IPC IPC(8): C10L1/32
Inventor 魏文珑李兴李彦威刘强张照昱常宏宏
Owner TAIYUAN UNIV OF TECH
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