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Preparation and use method of wood tar oil pesticides

A wood tar and pesticide technology, applied in the field of pesticides, can solve the problems affecting the normal use of straw gas, environmental pollution, gas furnace pipeline blockage, etc., and achieve the effects of reducing the cost of chemical fertilizers and pesticides, increasing the value of commodities, and reducing production.

Inactive Publication Date: 2009-02-04
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a certain amount of wood tar will be produced during the use of the straw gas stove. Excessive wood tar will block the gas stove pipeline and affect the normal use of straw gas. At this time, the gas stove tar filter device and tar recovery device must be cleaned. The random discharge of wood tar has caused great environmental pollution

Method used

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  • Preparation and use method of wood tar oil pesticides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Preparation of wood tar insecticide

[0025] Get wood tar 100g in the straw gasification furnace, 10ml sodium dodecylbenzenesulfonate (45% solution), water 100ml, stir at high speed, add the mixed acid (1 : 1 mixture), until the pH value of the mixture is 4.0-4.5, carefully raise the temperature to 50°C and keep it for 1 hour, then raise the temperature to 90°C to drive away the smoke, absorb the reactants with bitter bean dregs, and add the product to the base fertilizer.

[0026] 2. How to use wood tar insecticide

[0027] Add 100 grams of wood tar insecticide per kilogram of base fertilizer, apply 900 kilograms per hectare as base or topdress in the leek field, and water or plastic film for 7-10 days after application.

Embodiment 2

[0029] 1. Preparation of wood tar insecticide

[0030] Get wood tar 100g in the straw gasification furnace, 10ml sodium dodecylbenzenesulfonate (45% solution), water 100ml, stir at high speed, add the mixed acid (1 : 1 mixture), until the pH value of the mixture is 4.0-4.5, carefully raise the temperature to 50°C and keep it for 1 hour, then raise the temperature to 90°C to drive away the smoke, absorb the reactants with bitter bean dregs, and add the product to the base fertilizer.

[0031] 2. How to use wood tar insecticide

[0032] Add 100 grams of wood tar insecticide per kilogram of base fertilizer, and apply 900 kilograms per hectare as base or topdressing in cucumber fields. After application, water with soil or plastic film for 7-10 days.

Embodiment 3

[0034] 1. Preparation of wood tar insecticide

[0035] Get wood tar 100g in the straw gasification furnace, 10ml sodium dodecylbenzenesulfonate (45% solution), water 100ml, stir at high speed, add the mixed acid (1 : 1 mixture), until the pH value of the mixture is 4.0-4.5, carefully raise the temperature to 50°C and keep it for 1 hour, then raise the temperature to 90°C to drive away the smoke, absorb the reactants with bitter bean dregs, and add the product to the base fertilizer.

[0036] 2. How to use wood tar insecticide

[0037] Add 100 grams of wood tar insecticide per kilogram of base fertilizer, apply 1100 kilograms per hectare as basal or topdressing in the peanut field, and water or plastic film for 7-10 days after application.

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Abstract

The invention provides the preparation of wood tar pesticides and the usage thereof. The wood tar discharged by a straw gas furnace is taken as main raw materials, and is appropriately added with emulsifier and surface active agent which are evenly scatted in water; the mixture is stirred, then is dripped with mixed acid which is made of fuming nitric acid and glacial acetic acid; after being dipped, the mixture is heated up to 50 DEG C and kept for 1 hour, and then is heated up to 90 DEG C so as to drive away the smoke. Reactant is adsorbed by fenugreek dregs and is directly added to the base fertilizer, which can play a significant role in killing soil insects.

Description

(1) Technical field [0001] The invention relates to a method for preparing and using a wood tar insecticide, belonging to the field of pesticides. (2) Background technology [0002] Straw gas refers to the incomplete combustion of crop straw in a gas furnace under certain temperature and air isolation conditions, and then undergoes dry distillation pyrolysis chemical reaction and energy conversion to generate combustible gases such as carbon monoxide, methane, and hydrogen. When the crop stalks are ignited in the furnace, under the condition of insufficient combustion and open flames, a small blower blows air to supply oxygen to make it continuously produce gas, and the gas enters through the gasification furnace outlet port to the gas pipe under slight pressure. Purifier, which separates tar, water, impurities, etc. and turns them into clean gas. The clean gas can be burned through the pipeline and ignited by the nozzle of the special stove, and can be used for boiling wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N61/02A01P7/00
Inventor 程涛滕春红唐远征
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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