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Burning processing method for hyacinth

A treatment method and technology of water hyacinth, applied in the direction of combustion method, incinerator, combustion type, etc., can solve the problems of small processing capacity, long production cycle, difficult disposal of waste residue, etc., and achieve the effect of recycling

Inactive Publication Date: 2008-07-16
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that it is difficult to completely remove water hyacinth by manual salvage and landfill, and it is easy to cause secondary pollution
The publication number is CN1740328A, titled "Comprehensive utilization of water hyacinth plant residues to produce biogas method and device"; publication number CN1539798A, titled "Using water hyacinth, crop stems and leaves to produce organic liquid fertilizer technology"; publication number CN1583679A, title It is "water hyacinth bio-organic fertilizer". The above treatment methods share the problems of small treatment capacity, slow treatment speed, long production cycle, and difficult disposal of waste residues.

Method used

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  • Burning processing method for hyacinth

Examples

Experimental program
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Effect test

Embodiment 1

[0025] In step 1, the newly harvested water hyacinth 1 is first sent to a mechanical shear crusher for crushing, and the crushing size is controlled at about 6 cm.

[0026] The purpose of crushing is to improve the dehydration efficiency of the centrifugal dehydrator in the next step and to improve the drying efficiency of the subsequent dryer. The broken water hyacinth should not be too small, too small will easily block the drainage holes of the centrifugal dehydrator and reduce the drying efficiency of the dryer.

[0027] Step 2, sending the broken water hyacinth into a centrifugal dehydrator for dehydration, so as to get rid of free water on the surface and inside of the water hyacinth.

[0028] In step 3, the dehydrated water hyacinth is then sent to a dryer for drying, and the moisture content of the dried water hyacinth is 60%.

[0029] In the process of drying the water hyacinth, the heat source of the dryer is the heat of the hot flue gas produced by the incinerator....

Embodiment 2

[0036] Step is with embodiment one, and its difference is:

[0037] Step 1, the newly harvested water hyacinth is sent to a mechanical shear crusher for crushing, and the crushed size is controlled at about 8cm.

[0038] In step 3, the moisture content of the dried water hyacinth is 70%.

[0039] Step 4, in the dried water hyacinth, mix 10% of the weight of the treated fresh water hyacinth with a calorific value of 5500kCal / kg coal to form a mixed fuel, and the mixed low calorific value is 1700kCal / kg.

[0040] Taking the treatment of 100 tons of fresh water hyacinth per day as an example, after analysis and calculation, when the moisture content of water hyacinth after drying is 60%, the low calorific value of auxiliary fuel coal is 5000kCal / kg, and the amount of coal mixed with fresh water hyacinth is 5% of the weight of the mixed fuel, the low calorific value of the mixed fuel is 1600kCal / kg. The daily consumption of auxiliary fuel coal is 5 tons, and the auxiliary fuel c...

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Abstract

The invention discloses a burning disposal method used for burning hyacinths, belonging to the biological matter burning technique field of environment protection engineering. The method mainly includes the following steps: firstly, newly collected hyacinths are transferred to a crusher for being crushed and the crushed hyacinths are transferred to a centrifuge spin-drier for being spin-dried and then are transferred to a drier for being dried, after being dried, the hyacinths contain 60 to 70 percent of water; assistant fuel coals with a mass ratio of 5 to 10 percent against the processed newly collected hyacinths are mixed into the dried hyacinths to get mixed fuel; finally the mixed fuel is delivered into an incinerator for carrying out burning disposal. In the invention, the heat supply used for drying the hyacinths comes from the heat of the hot off-gas generated by the incinerator so as to realize the heat recycling of heat and the adding ratio of the assistance fuel coal is low. The invention provides the method for the mass, quick and collective final disposal of the hyacinths.

Description

technical field [0001] The invention relates to a water hyacinth incineration treatment method, which belongs to the technical field of biomass incineration in environmental protection engineering. Background technique [0002] Water hyacinth, also known as water hyacinth, is a perennial floating herb native to South America. It has both asexual and sexual reproduction functions, especially asexual reproduction, and has a strong ability to restore and spread the population. Under suitable conditions, it can reproduce a new plant every 5 days, and it can increase by 20% to 30% every day. Calculated at this rate, one water hyacinth can reach 140 million plants within one year after reproduction. It is one of the fastest growing and multiplying aquatic plants in the world. [0003] In the 1960s and 1970s when China's food was in short supply, water hyacinth was widely promoted and planted as feed. However, with the rapid development of China's economy, mixed feed has graduall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/02
Inventor 周岩梅
Owner BEIJING JIAOTONG UNIV
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