CN1093557C - Process for preparing coal slurry by utilizing black liquid from straw paper making - Google Patents
Process for preparing coal slurry by utilizing black liquid from straw paper making Download PDFInfo
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- CN1093557C CN1093557C CN 98101428 CN98101428A CN1093557C CN 1093557 C CN1093557 C CN 1093557C CN 98101428 CN98101428 CN 98101428 CN 98101428 A CN98101428 A CN 98101428A CN 1093557 C CN1093557 C CN 1093557C
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- coal
- black liquor
- coal slurry
- paper making
- black liquid
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- Liquid Carbonaceous Fuels (AREA)
Abstract
The present invention relates to a technology for preparing coal pulp by straw papermaking black liquor, which is especially suitable for treating the pollution of the straw papermaking black liquor, and preparing the coal pulp by the black liquor. Coal of which the ash content is from 1 to 20% is used as a raw material, and the granularity of the coal is from 0.001 to 50mm. The present invention is characterized in that the straw papermaking black liquor of which the solid content is from 5 to 50 % is added in a coal pulp preparation process, the lignin in the black liquor is used as a dispersing agent, and water in the black liquor is used as a dispersion medium to prepare the coal pulp. Medical agents which are used for preparing the coal pulp and a large amount of clean water are saved, and the heat energy in the black liquor is recovered.
Description
The invention belongs to paper-making pollution and handle and the energy utilization industry, be specially adapted to handle the black liquid from straw paper making pollution and utilize black liquor to prepare coal slurry.
Black liquid from straw paper making silicone content height is difficult to administer, and environmental pollution is serious.Handling black liquid from straw paper making at present has a kind of alkali recovery technology, reclaims the alkali and the black liquor that burns in the black liquor, and main drawback is that investment is high, reclaims for ton paper plant alkali and will invest several ten million yuan.Coal water slurry is a kind of New-type fuel that grew up in recent years, and characteristics such as pollution is little, energy utilization rate height that it has are compared with direct fire coal, can economize on coal 20%, and shortcoming is to need to consume a large amount of clean waters and part chemical agent.
The object of the invention is to provide a kind of black liquid from straw paper making that utilizes to prepare coal slurry technology, solves the black liquid pollution problem, and utilizes xylogen and heat energy in the black liquor, reduces coal slurry cost and water consumption, and the coal slurry of preparing directly paper supply factory steam boiler uses.
The present invention relates to a kind of preparation coal slurry technology, coal with ash oontent 1-20% is a raw material, granularity is 0.001-50mm, it is characterized in that preparing that to have added solid content in the coal slurry process be the black liquid from straw paper making of 5-50%, utilize the xylogen in the black liquor to make dispersion agent, utilize the water compositing dispersion medium in the black liquor to prepare coal slurry.
Aforesaid preparation coal slurry technology, it is characterized in that coal slurry is is that the black liquor of 5-50% and coal grind together and be prepared from 10-60 minute by solid content in grinding machine, the coal slurry weight percent concentration is 50-80%, and viscosity is 100-3000mpas, and the minimum calorific value of coal slurry is 6MJ/kg.
Consider paper plant's black liquor amount and steam boiler consumption of coal thereof, needing black liquor inspissation is best to 20-40%.
Advantage one of the present invention is a black liquor pollution of having administered paper plant, has utilized the dispersing property of xylogen and the water in the black liquor in the black liquor, has saved the medicament of preparation coal slurry and a large amount of clean waters, has reclaimed the heat energy in the black liquor simultaneously; The 2nd, brought into play low pollution of coal slurry and the high characteristics of energy utilization rate, reduced the energy consumption of paper plant; , the 3rd, reduced investment, for ton paper plant, recoup the investment with alkali and to compare, reduce investment 90%, compare with single coal water slurry manufacture craft, save a large amount of clean waters and chemical agent expense.
Embodiment one: the employing calorific value is 29.26MJ/kg, ash content 8%, granularity less than the coal of 2mm and solid content is that (the dried solid substance calorific value of black liquor is greater than 12.54MJ/kg for 10% black liquor, following examples are identical) add grinding machine and grind 20min and can prepare coal slurry, wherein the part by weight of coal and black liquor is 47: 53.
Embodiment two: the employing calorific value is 29.26MJ/kg, ash content 8%, granularity less than the coal of 2mm and solid content is that 30% black liquor adds grinding machine and grinds 20min and can prepare coal slurry, and wherein the part by weight of coal and black liquor is 30: 70.
Embodiment three: the employing calorific value is 29.26MJ/kg, ash content 8%, granularity less than the coal of 2mm and solid content is that 40% black liquor adds grinding machine and grinds 30min and can prepare coal slurry, and wherein the part by weight of coal and black liquor is 26: 74.
Claims (2)
1. one kind is utilized black liquid from straw paper making to prepare coal slurry technology, the coal that with the granularity is 0.001-50mm, the ash content of coal 1-20% is a raw material, it is characterized in that preparing that to have added solid content in the coal slurry process be the black liquid from straw paper making of 5-50%, utilize the xylogen in the black liquor to make dispersion agent, utilize the water compositing dispersion medium in the black liquor, black liquor and coal grind in grinding machine together made coal slurry in 10-60 minute, the coal slurry weight percent concentration is 50-80%, viscosity is 100-3000mpas, and the minimum calorific value of coal slurry is 6MJ/kg.
2. preparation coal slurry technology as claimed in claim 1 is characterized in that black liquid consistency is 20-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98101428 CN1093557C (en) | 1998-04-24 | 1998-04-24 | Process for preparing coal slurry by utilizing black liquid from straw paper making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98101428 CN1093557C (en) | 1998-04-24 | 1998-04-24 | Process for preparing coal slurry by utilizing black liquid from straw paper making |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1233647A CN1233647A (en) | 1999-11-03 |
| CN1093557C true CN1093557C (en) | 2002-10-30 |
Family
ID=5216689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98101428 Expired - Fee Related CN1093557C (en) | 1998-04-24 | 1998-04-24 | Process for preparing coal slurry by utilizing black liquid from straw paper making |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1093557C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103001A (en) * | 2012-12-12 | 2013-05-15 | 青岛特利尔环保锅炉工程有限公司 | Papermaking black liquid coal water slurry |
| CN103104924A (en) * | 2012-12-13 | 2013-05-15 | 青岛特利尔环保锅炉工程有限公司 | Coal water slurry suspension fluidized combustion treatment process for papermaking black liquid |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154155A (en) * | 2015-08-25 | 2015-12-16 | 太仓旺泰净化设备有限公司 | Papermaking black liquid coal-water-slurry |
| CN116179247A (en) * | 2023-03-08 | 2023-05-30 | 北京弘扬紫东环保科技有限公司 | ZD type composite gasified coal water slurry additive and application thereof |
-
1998
- 1998-04-24 CN CN 98101428 patent/CN1093557C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103001A (en) * | 2012-12-12 | 2013-05-15 | 青岛特利尔环保锅炉工程有限公司 | Papermaking black liquid coal water slurry |
| CN103104924A (en) * | 2012-12-13 | 2013-05-15 | 青岛特利尔环保锅炉工程有限公司 | Coal water slurry suspension fluidized combustion treatment process for papermaking black liquid |
| CN103104924B (en) * | 2012-12-13 | 2016-03-09 | 青岛特利尔环保股份有限公司 | Water-coal-slurry suspension fluidization burning process black liquid technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1233647A (en) | 1999-11-03 |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |