Process and equipment forsolar energy gasification of plant stalk and comprehensive utilization of waste slag

Abstract

The invention provides a process and devices for plant straw gasification by solar energy and comprehensive utilization of waste residue. The process flow comprises the following steps of: 1. spontaneous fermentation; 2. gasification; 3. residue discharging; 4. planting edible fungi by the waste slag; and 5. fertilizing fungi residue in farmland. The devices for realizing the process comprise a solar greenhouse, a gasification tank arranged in the greenhouse and a gas storage tank arranged outside the greenhouse; a low part in the front of the solar greenhouse is a planting area for planting vegetables and flowers. The gasification tank is a cylindrical sealed tank made of steel; one end of the gasification tank is provided with a manhole; the manhole comprises a flange welded on the end part of the gasification tank, a gasket and a manhole door, which are connected through bolts; an upper part of the gasification tank is respectively provided with a feeding hole, a discharge hole and a vent; and a lower part of the gasification tank is provided with a water outlet which is connected with a fertilizer storage tank through a valve. The process and the devices realize high-efficiency disposal of straw resource of wheat and rice and no environmental pollution disposal of manure, comprehensively utilize the waster residue, and improve the economic and social benefits.

Description

technical field [0001] The invention relates to a plant straw gasification process and equipment, in particular to a process and equipment for solar energy gasification of straw and comprehensive utilization of straw waste residue after gasification. Background technique [0002] In the vast rural areas of our country, a large amount of straw is produced every year, which is directly burned in the field. During the harvest season, due to the smog caused by burning straw, planes cannot land, highway accidents occur frequently, and the air is seriously polluted, resulting in a sharp increase in respiratory diseases. In order to ban the burning of straw, governments at all levels spend a lot of energy every year to strictly investigate the burning of straw. The state invests a lot of money every year to promote straw gasification and straw biogas technology. However, due to the large investment in building a straw gasification station, the gas contains a lot of tar, the calor...

AI Technical Summary

Problems solved by technology

However, due to the large investment in the construction of the straw gasification station, the gas contains a lot of tar, the calorific value is low, and the benefit is poor.

Most straw gasification stations do not use plant straw to make gas, but use rice husks and wood to make gas; because of the household biogas digesters currently being promoted in rural areas, the straw must be crushed, the discharge port is small, and it is difficult to feed in and out of the gas. The efficiency is low, and the bacteria must be purchased every time the fuel is changed, which increases the cost and makes many biogas digesters unable to produce gas due to the lack of fermentation raw materials

Low utilization rate of waste residue

Images