CN1229843A

CN1229843A - Fuel using chaff and process for manufacturing thereof

Info

Publication number: CN1229843A
Application number: CN 99100610
Authority: CN
Inventors: 李斗均
Original assignee: DOO GYUN LEE
Current assignee: DOO GYUN LEE
Priority date: 1998-02-06
Filing date: 1999-02-08
Publication date: 1999-09-29
Anticipated expiration: 2019-02-08
Also published as: CN1103806C

Abstract

The present invention relates to a fuel using chaff used in the fammer house and the chamber in which vegetable-farmer plants crops and process for manufacturing thereof. The chaff powder obtained by grinding the chaff into micro powder is mixed with loess powder discharging the impurity such as sand grain based on a certain ratio, and formed to cylindrical shape in the mould, then air-drying for a predetermined time, at last the fuel using chaff is obtained for replacing oil fuel.

Description

Fuel using chaff and manufacture method thereof

The present invention relates to plant fuel using chaff used in the greenhouse of farm crop and manufacture method at peasant's dwelling house and vegetable grower, more specifically, it is that the rice husk powder that powdered rice hulls is broken into micro mist is mixed with certain proportion with the loess powder of removing impurity such as sand grains, and be cylindrical with mould molding, again it is carried out the air seasoning of certain hour, can produce the product-fuel using chaff that substitutes oil fuel thus.

Generally speaking, mainly be based on fuel such as oils and coals for industry and the employed fuel of greenhouse.In order to find substitute products, constantly carrying out the research of the whole bag of tricks.

Having much representational fuel is to make it make bar-shaped (fuel wood shape) after sawdust and the rice husk mixing, to be used for replacing fuel wood as stove and the employed fuel of heating boiler.Yet, in its combustion processes, produce a large amount of cigarettes, and quantity of heat production is low, need the manpower fueling, and the coal ash that produces in the combustion processes is also a lot, need remove at any time, so that reach perfect combustion.Just owing to there being the problems referred to above, so do not produced this fuel now.

The present invention proposes at the problems referred to above, its objective is the method that a kind of fuel using chaff is provided and makes this fuel, it is that the loess that obtains easily on a large amount of useless rice husks that produce with the rice treating process and the mountains out of office is raw material, produces the fuel using chaff that can obtain high calorie.

The method that further purpose of the present invention provides a kind of rice husk coal solid fuel and makes this fuel, it is to mix a certain proportion of loess powder in the rice husk powder, and is made into columniform goods.The gained solid fuel can automatically be supplied with heating facilitiess such as boiler.Because rice husk powder and loess powder are bonded in together, the existence owing to wind in the time of can preventing to burn is outwards dispersed coal ash.And owing to only used rice husk powder and loess powder, the coal ash after the burning can be effectively applied in the compost.Moreover, because rice husk is made powder, can carry out perfect combustion.

In order to achieve the above object, the present invention includes following manufacturing step: preparation step, it is that rice husk is ground into the micro mist of 0.4mm-0.7mm with pulverizer, then loess is put into impurity such as removing sand grains in the container that fills certain water gaging, and dipping obtained the loess powder in 72 hours in settling tank; Mixing step, its be the powdered rice hulls that will obtain in the above-mentioned preparation step and loess powder with 7: 1-9: 1 volume ratio is put into mixing tank, and adds a spot of water and mix; Forming step, it is that above-mentioned mixed raw material is put into diameter is shaper about 40mm, and it is manufactured definite shape; Drying step, it is to carry out air seasoning about 4 days to remove the moisture in the shaping raw material, produces fuel using chaff thus.

Below will with reference to schema the peculiar effect that it obtains be described in detail with a representative embodiment of the present invention, among the figure:

Fig. 1 is the schematic flow sheet of the full manufacturing processed of the present invention.

Fig. 1 is the schematic flow sheet of whole manufacturing processedes of the present invention.According to this schema, the manufacture method of fuel using chaff of the present invention is made up of preparation step (10), mixing step (20), forming step (30) and drying step (40).Preparation step (10) comprises rice husk is ground into the rice husk powder with pulverizer, and loess is put into water dipping certain hour obtains the loess powder.Mixing step (20) is meant that powdered rice hulls and the loess powder that will obtain carry out the blended step with certain proportion from preparation step (10).Forming step (30) is a cylindrical product of the raw material that stirs through mixing step (20) being made certain size with shaper.Drying step (40) is meant the moisture that removes by in the goods of forming step (30) gained.

Above-mentioned preparation step (10) can be divided into and rice husk is ground into the step of powdered rice hulls with pulverizer and loess is dissolved in the water to remove impurity such as sandstone and to make its precipitation obtain the step of loess powder.

A large amount of rice husks that above-mentioned rice husk is produced in the time of can utilizing rural area rice source mill to make with extra care rice.As with its direct use, because the adhesive power between its loose and particle is not strong, thus can not be bonded as solid, nor can obtain perfect combustion.In view of this, for it being manufactured only burning shape, and can be automatically with the solid shape supply that acts as a fuel, just be necessary to be processed into the form of fine powder.When above-mentioned powdered rice hulls is broken into fine powder, use conventional known pulverizer to get final product.Rice husk after the pulverizing is divided into fine powder through the mesh screen of 0.4mm～0.7mm.

Loess powder can adopt natural high-quality loess, put it into mixed dissolution in the container of filled with water earlier, impurity such as sand grains are precipitation downwards, further the loess powder that is dissolved in the water is delivered to highly for carrying out 72 hours precipitation, the loess powder of the grains of sand that are removed at last in the settling tank of 1.5m.

The purpose that makes above-mentioned powdered rice hulls be broken into fine powder is exactly to improve density in order to reduce its volume significantly, and the adhesive power between enhanced granule, so that it is bonded to solid, obtains maximum heat under suitable combustion conditions.Make the bonding between the rice husk powder become possibility owing to having certain bounding force between the loess powder, thereby be that fuel is made one of solid conditio sune qua non.Because its combustion processes is slow, therefore can easily carry out the adjusting of heating facilities temperature.Rice husk powder behind the molding bonded can prevent dispersing of the coal ash produces owing to ventilating, and the loess powder also is that the coal ash after burning is effectively applied to optimal material in the compost simultaneously.

For improving resultant articles intensity and perfect combustion performance thereof, also should carry out mixing step (20), promptly, the powdered rice hulls and the loess powder raw material of gained in the above-mentioned preparation step (10) are put into the step that stirs in the stirrer by preferred proportion.

Powdered rice hulls and loess powder ideal mix, and rendering to the powdered rice hulls in the above-mentioned stirrer and the limited proportion of loess powder is 7: 1～9: 1 in volume ratio, adds a certain amount of water then therein, and carries out the kneading of certain hour.

Then, to put into shaper by the mixed raw material of mixing step (20) with 200～300 left and right sides moulds, the diameter of this mould is about 40mm, further make it in mould, carry out extrusion molding on the top of shaper then and make cylindrical product, finish forming step (30) thus.

The diameter of making in forming step (30) is that the hopper that the cylindrical product about 40mm can be provided with above boiler is automatically fallen in the combustion chamber, can prevent rapid combustion and produce cinder resemble the coal, it can take fire from the surface earlier, and burn to inside at leisure, this thus fuel obtains perfect combustion.

The cylindrical product of being made by above-mentioned steps (30), because it contains a certain amount of moisture, thereby also need to carry out with the unwatering be the drying step (40) of purpose.This step is following finishing: be provided with drying plate about 20 at draughty kiln, carry out air seasoning about 4 days by air quantity is run through by the method for drying plate, evaporated the solid fuel of moisture in the moulded products at last fully.

Use the fuel of method for preparing because it has certain intensity, thereby in handling process, be difficult for fragmentation, make its easy processing again owing to it is in light weight.

The thermal value and the existing solid fuel of the end article of gained of the present invention are compared, and whether it can be used as alternative fuel, by in the following table by experimental result that Republic of Korea chemical experiment research person carried out just as can be known to.From this table as can be seen, heat that fuel using chaff of the present invention produces is very big.

Fuel type	Thermal value
Fuel type	Thermal value	Coal	????4000～8000?kcal/kg
Brown coal	????3000～5000?kcal/kg	Coal	????4000～8000?kcal/kg
Brown coal	????3000～5000?kcal/kg	Sun-dried mud brick coal (mud coal)	????2000～4000?kcal/kg
The brick coal	????4000～5000?kcal/kg	Sun-dried mud brick coal (mud coal)	????2000～4000?kcal/kg
The brick coal	????4000～5000?kcal/kg	Fuel of the present invention	????3000～4000?kcal/kg

By above-mentioned experimental value as can be known, the heat that fuel using chaff of the present invention produced is compared with the solid fuel of present use, its thermal value is very big.Its combustion processes is because the burning tolerance that produces is less in addition, thereby can reduce danger and topsoil.Coal ash after the burning also can be applicable in the compost, thereby the environmental pollution that can not cause the generation owing to coal ash to bring.Because using less air quantity is incendivity, therefore reduced calorific loss by flue, can farthest improve the thermo-efficiency of boiler, thereby can be used as alternative fuel and be extensive use of.

As mentioned above, the present invention is that a large amount of discarded rice husk that is produced with rice source mill is a raw material, it is pulverized the back be mixed and made into solid fuel mutually with a spot of loess powder, its thermal value is bigger, again because these goods are lighter, can carry easily, therefore can be used as the fuel of fuel applications in bathroom and agricultural heating boiler that substitutes wet goods.Can substitute the oil fuel of import according to fuel of the present invention, respond well, the coal ash that burning produces can use in compost, original use chemical fertilizer made plough to become highly acid soil restoration to original state, and be a very useful invention.

Claims

1, a kind of method of making fuel using chaff, it is characterized in that, described manufacturing processed may further comprise the steps: preparation step, it is the micro mist that rice husk is ground into 0.4mm-0.7mm with pulverizer, loess is put into impurity such as removing sand grains in the container of filled with water, dipping obtained the loess powder in 72 hours in settling tank then; Mixing step, its be the rice husk powder that will obtain in the described preparation step and loess powder with 7: 1-9: 1 volume ratio is put into mixing tank, and adds a spot of water and mix; Forming step, it is that described mixed raw material is put into diameter is shaper about 40mm, and it is manufactured definite shape; Drying step, it is to carry out air seasoning about 4 days to remove the moisture in the shaping raw material, produces fuel using chaff thus.

2, a kind of fuel using chaff is characterized in that, its with rice husk powder and loess powder with 7: 1-9: 1 volume ratio is mixed and is also made cylindrical making.