CN201317767Y

CN201317767Y - Biomass gas purifying device

Info

Publication number: CN201317767Y
Application number: CNU2008202320979U
Authority: CN
Inventors: 张建超; 张瑜
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-24
Filing date: 2008-12-24
Publication date: 2009-09-30
Anticipated expiration: 2018-12-24

Abstract

The utility model relates to a biomass gas purifying device, which comprises a composite filtering device. The biomass gas purifying device is characterized by further comprising a cyclone separator, wherein the cyclone separator is communicated with the composite filtering device through a gas pipeline, pollution discharge holes are respectively arranged on the bottoms of the cyclone separator and the composite filtering device, and the composite filtering device is an integral composite structure which comprises a water bath shower, a heat exchanger and a dry filter. The biomass gas purifying device integrates gas purification and filtration, has more rational and more impact structure, small equipment occupied area, simple technique, scientific design, energy-saving and pollution reducing performances and wide application, enables biomass waste in rural places to realize gasification and canalization as soon as possible, and enables rural people to use clean and convenient gas like urban people.

Description

The biomass fuel air purifying apparatus

Technical field

The utility model relates to gas-purification, relates in particular to a kind of biomass fuel air purifying apparatus.

Background technology

The whole world is generally with coal at present, oil, Nonrenewable resources such as Sweet natural gas are as main fuel. produce a large amount of obnoxious flavour and flue dust in most of process combustion. and the gasifying biomass equipment need not fuel is directly burnt, but with multiple biomass and organic waste under the anoxybiotic state, produce a kind of equipment of inflammable gas; Because biomass and organic waste are a kind of inexhaustible resources, but both utilization of waste material, but cleaning ambient again reduces environmental pollution.

Yet well-known, the inflammable gas that produces under the state of anoxycausis contains a large amount of dust, wood tar oil and wood vinegar, and to face the most difficult problem be to extract wood tar oil and hinder the biomass energy development.

Patent application CN101307238 " biomass gasification device " and CN101302430 " method for preparing combustion gas with agricultural waste material and organic waste " disclose a kind of biomass gasification device and biogas metallization processes respectively, its complete assembly interconnects under closed state, with natural agricultural waste material and organic waste is raw material, energy transformation by multiple biomass energy, the high efficient energy sources of clean environment firendly have been formed, low-cost, easily popularization, and be inexhaustible, nexhaustible green energy resource.

But wherein still exist some unsatisfactory parts, comprising about the gas-purification filter design:

Its gas buffer and filter apparatus configuration complexity, floor space is big, and technical process is many, and the installation and maintenance workload is big, thereby the technology cost is increased, and gasification result is undesirable, and gasification efficiency reduces.

Summary of the invention

In view of the above-mentioned defective of existing in prior technology, it is little, convenient for installation and maintenance that the utility model is intended to disclose a kind of compact construction occupation of land, and technology is simple, low-cost, high efficiency biomass fuel air purifying apparatus.

Technical solution of the present utility model is achieved in that

A kind of biomass fuel air purifying apparatus comprises composite filtering equipment, it is characterized in that:

Also comprise cyclonic separator; Be connected by air delivering pipeline between described cyclonic separator and the composite filtering equipment; The bottom of cyclonic separator and composite filtering equipment is respectively equipped with sewage draining exit;

Described cyclonic separator is a upper coarse and lower fine hollow rotary structure, and its top is offered inlet mouth and air outlet respectively, and described inlet mouth is offered along the tangential direction of described revolution body wall, and described air outlet is located near the center of described solid of revolution napex or its;

Described composite filtering equipment is the integral type composite structure that comprises water-bath spray thrower, interchanger and dry filter; Its inside is communicated to the inlet plenum of interchanger successively by air delivering pipeline from the top of described water-bath spray thrower, be communicated to the bottom of described dry filter again from the discharge chamber of interchanger;

Described water-bath spray thrower is a container that has spray equipment, comprises inlet pipe, drain pipe road and air delivering pipeline, stores the water of certain altitude in the water-bath spray thrower; The inlet mouth of described composite filtering equipment is positioned at the middle part of its water-bath spray thrower and more than the water-bath top water-level, in the water that the air delivering pipeline of air inlet is stored in described inlet mouth inserts the water-bath spray thrower;

Described interchanger comprises inlet plenum, discharge chamber and heat transfer zone; Comprise cooling circulating water, inlet and outlet pipe in the described heat transfer zone and be dipped in heat transfer tube in the water, heat transfer zone is isolated with inlet plenum and discharge chamber by two division boards at its two ends, and the two ends of heat transfer tube are connected with inlet plenum and discharge chamber respectively;

Described dry filter comprises at least two-layer up and down, has interlayer separately and have air delivering pipeline to be connected between every layer, and at least four road filtering nets are housed in each filtering layer, combustion gas by the road by filtering net after enter next filtering layer by air delivering pipeline; The air outlet of composite filtering equipment is positioned at the top of dry filter.

Obtain better rotate effect in the biological fuel gas scavenging process for making, and then the effect of settling of raising impurity, the hollow rotary structure of described cyclonic separator comprises two parts that connection up and down is welded as a whole, top is hollow circular cylinder, the bottom is a hollow rounding stage body, the outside diameter circle of described rounding stage body and described cylindrical equal diameters.

Use above-mentioned biomass fuel air purifying apparatus to carry out the technology that biological fuel gas purifies, comprise the buffering precipitation step and the filtration step of combustion gas, it is characterized in that:

In the buffering precipitation step of described combustion gas, tangential direction along its solid of revolution enters in the cyclonic separator from whirlwind separator top inlet mouth in the combustion gas that generates, and it is downward around its spiral inner wall, buffering and settling process take place in gas, partial impurities comprises that dust, wood tar oil, wood vinegar are settled down to the bottom of cyclonic separator;

In the filtration step of described combustion gas, the gas that rises is under the draft effect of water ring compressor, and the gas pipe line between conrotatory wind separator and the composite filtering equipment enters from the inlet mouth of water-bath spray chamber and carries out water-bath, spray, heat exchange and filtration drying in the composite filtering equipment successively;

And regularly cyclonic separator and composite filtering equipment are carried out the blowdown processing.

The free air delivery scope of above-mentioned water ring compressor is: 90m ³/ h～1800m ³/ h, maximum working pressure (MWP) are 0.6MPa.

Compared to existing technology, technique effect of the present utility model comprises the following aspects:

(1) cyclonic separator is simple in structure, and design science take up an area of and lack, and the effect of settling of impurity is better, and the decontamination effect improving that generates combustion gas is better;

(2) design of composite filtering equipment more compact structure not only, floor space is little, and it is more convenient to install, its bath of catchmenting that more outstanding is, spray, strainer filtering are one, do wet the filtration and combine, and multiple times of filtration combines with repeatedly lowering the temperature, technological process is efficiently convenient, filters also more abundant; Thereby obtain more high purity, more cleaning, free of contamination combustion gas, its detar rate reaches more than 99%.

As seen, biomass fuel air purifying apparatus disclosed in the utility model and purification process integrate gas-purification and filter, and more reasonable structure is compacter, and occupation area of equipment is little, and multiple purification filtering mode is combined, and technology is more simple, efficient; Obtain higher, the more combustion gas of cleanliness without any pollution of purity, especially solved the separation problem of wood tar oil, thereby prevented that effectively the burn in the pipeline from stopping up and environmental pollution problems, meets the environmental requirement of energy-saving and emission-reduction; Thereby more effectively guaranteed the without interruption of combustion gas, reduced maintenance time, reduced production cost, gasification efficiency reaches 95%, and fuel gases calorific value reaches 1661kcal/m ³

The utility model technology is simple, design science, and energy-saving and emission-reduction, it is widely used, and especially makes the biomass waste in rural area realize gasification, canalization as early as possible, allows use the same with the urban resident of common people in rural area clean combustion gas easily.

Description of drawings

Fig. 1 is the structural representation according to the biomass refining plant of embodiment of the present utility model;

Fig. 2 is the vertical view of Fig. 1.Among the figure,

1, cyclonic separator

11, inlet mouth 12, air outlet 13, wash water valve

2, composite filtering equipment

21, water-bath spray thrower

22, interchanger

221, inlet plenum

222, heat transfer zone

2221, water outlet

2222, cooling circulating water

2223, heat transfer tube

2224, water-in

223, discharge chamber

224,225, division board

23, dry filter

231, filtering layer

232, interlayer

24, heat-insulating layer

25,26, wash water valve

Embodiment

The biomass fuel air purifying apparatus as shown in Figure 1, comprises cyclonic separator 1 and composite filtering equipment 2, and both are respectively equipped with

wash water valve

13,25,26 in the bottom;

Described cyclonic separator 1 is a upper coarse and lower fine hollow rotary structure, comprise two parts that are communicated with up and down, top is hollow circular cylinder, the bottom is a hollow rounding stage body, upper coarse and lower fine, the outside diameter circle of described rounding stage body and described cylindrical equal diameters, two portions are integrally welded up and down.

The top of cyclonic separator 1 is offered inlet mouth 11 and air outlet 12 respectively, and described inlet mouth 11 is offered along the tangential direction of described revolution body wall, and the center of described solid of revolution napex is located in described air outlet, as shown in Figure 2;

Described composite filtering equipment 2 is the integral type composite structures that comprise water-bath spray thrower 21, interchanger 22 and dry filter 23; Its inside is communicated to the inlet plenum 221 of interchanger successively by air delivering pipeline from the top of described water-bath spray thrower 21, be communicated to the bottom of described dry filter 23 again from the discharge chamber 223 of interchanger;

Described water-bath spray thrower 21 is containers that have spray equipment, comprises inlet pipe, drain pipe road and air delivering pipeline, stores the water of certain altitude in the water-bath spray thrower 21; The inlet mouth of described composite filtering equipment 2 is positioned at the middle part of its water-bath spray thrower 21 and more than the water-bath top water-level, in the water that the air delivering pipeline of air inlet is stored in described inlet mouth inserts water-bath spray thrower 21;

Described interchanger 22 comprises inlet plenum 221, discharge chamber 223 and heat transfer zone 222; Comprise cooling circulating water 2222, inlet and

outlet pipe

2224,2221 in the described heat transfer zone 222 and be dipped in heat transfer tube 2223 in the water, heat transfer zone is isolated with inlet plenum 221 and discharge chamber 223 by two division boards 224,225 at its two ends, and the two ends of heat transfer tube 2223 are connected with inlet plenum 221 and discharge chamber 223 respectively;

Described dry filter 23 comprises two-layer up and down, there is interlayer 232 separately and have air delivering pipeline to be connected between two-layer, four road filtering nets 231 are housed in each filtering layer, combustion gas by the road by filtering net after enter next filtering layer by air delivering pipeline, discharge by the air outlet at last; The air outlet of composite filtering equipment 2 is positioned at the top of dry filter 23.

Accompany heat-insulating layer 24 between described dry filter 23 and the water-bath spray thrower 21;

Be connected by air delivering pipeline between described cyclonic separator 1 and the composite filtering equipment 2; Biological fuel gas betwixt the path of purification filtering shown in the arrow circuit among Fig. 1:

A→B→C→D→E→F→G→H→I→J→K→L

Use above-mentioned biomass fuel air purifying apparatus to carry out the technology that biological fuel gas purifies, comprise the buffering precipitation step and the filtration step of combustion gas, specifically describe as follows:

The inflammable gas that is produced in the producer gas generator comprises carbon monoxide, methane, ethane, hydrogen etc., under the draft effect of water ring compressor, produce and flow, enter cyclonic separator through the inlet mouth of described cyclonic separator along the tangential direction of the solid of revolution of cyclonic separator along air delivering pipeline, and spiral moves downward, in this process, buffering and sedimentation take place in gas, and partial impurities comprises that dust, wood tar oil, wood vinegar are settled down to the bottom of cyclonic separator;

Rise through settled gas, and under the draft effect of water ring compressor, gas pipe line between conrotatory wind separator and the composite filtering equipment enters from the inlet mouth of water-bath spray chamber and carries out water-bath, spray, heat exchange and filtration drying in the composite filtering equipment successively: wherein, through water-bath and twice cleaning of spray and cooling, remove impurity and separate part wood tar oil, wood vinegar; Combustion gas is further lowered the temperature after heat exchange again; Last combustion gas enters the filtration chamber and filters through totally six road filtering nets, is used for removal of contamination once more, separates wood tar oil, wood vinegar.

Regularly need carry out the blowdown processing to cyclonic separator and composite filtering equipment.

The utlity model has purification filtering cycle weak point, the efficient height, cleaning, environmental protection easily realizes canalization, the characteristics that production cost is low are suitable for city, township, town and the promotion and application of vast rural area.Both clean environment, reduced pollution again, realized the second stage employ of refuse.This project meets the industry policy of country, meets environmental protection requirement, energy-saving and emission-reduction, and effect is splendid.

The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, all should be encompassed within the protection domain of the present utility model.

Claims

1, a kind of biomass fuel air purifying apparatus comprises composite filtering equipment, it is characterized in that:

Also comprise cyclonic separator; Be connected by air delivering pipeline between described cyclonic separator and the composite filtering equipment; The bottom of cyclonic separator and composite filtering equipment is respectively equipped with wash water valve;

2, biomass fuel air purifying apparatus according to claim 1 is characterized in that:

The hollow rotary structure of described cyclonic separator comprises two parts that connection up and down is welded as a whole, and top is hollow circular cylinder, and the bottom is a hollow rounding stage body, the outside diameter circle of described rounding stage body and described cylindrical equal diameters.