CN205495335U

CN205495335U - Flue gas desulfurization denitration granule

Info

Publication number: CN205495335U
Application number: CN201620222745.7U
Authority: CN
Inventors: 罗坚; 刘金生
Original assignee: TIANJIN BINHAI ENVIROCHEM ENGINEERING AND TECHNOLOGIES Inc
Current assignee: TIANJIN BINHAI ENVIROCHEM ENGINEERING AND TECHNOLOGIES Inc
Priority date: 2016-03-22
Filing date: 2016-03-22
Publication date: 2016-08-24
Anticipated expiration: 2026-03-22

Abstract

The utility model relates to a flue gas desulfurization denitration granule, the granule is the cylinder, and its cross section is enclosed to close by the connection of a plurality of arc lamellas head and the tail order and forms, and granular material is: at least an among calcium hydrate, calcium carbonate, magnesium hydroxide, carbonic magnesium, sodium carbonate or the sodium bicarbonate, perhaps reblending sodium hypochlorite or potassium permanganate have the through -hole in the axial and the radial direction interval system of cylinder. The utility model provides a powder of SOx/NOx control granule in with prior art or the shortcoming of the unsuitable current device of solution material, this granule be the column, is enclosed to close by a plurality of arc lamellas to form, has great surface area, can increase flue gas and particle surface's area of contact, improvement desulfurization efficiency.

Description

A kind of flue gas desulfurization and denitrification granule

Technical field

This utility model belongs to flue gas desulfurization Material Field, particularly a kind of flue gas desulfurization and denitrification granule.

Background technology

The conventional limestone-gypsum method of wet desulphurization such as steam power plant's desulfurization, sodium hydroxide-lime white (or hydroxide Magnesium) etc. method, device is more complicated, and operation energy consumption is the highest, produces waste water and needs to process, and causes other Secondary pollution, cumbersome, directly copy coking furnace flue gas desulfurization process mechanically and be likely difficult to up to standard.Also have toward following The way (dry desulfurization on ordinary meaning) of circulation fluidized bed boiler spray calcium carbonate sulphur removal, but this method processes effect The most poor.

In traditional wet method, lime white (uses the Dual alkali of sodium hydroxide+Calx, and magnesium hydroxide, principle The most identical) with flue gas in SO₂Reaction generates calcium sulfite, and (Dual alkali first passes through sodium hydroxide reaction, the latter It is reacted to calcium sulfite with lime white and restores sodium hydroxide.Sodium hydroxide solution Reusability.Clean is anti- Should be calcium hydroxide and react generation calcium sulfite with sulfur dioxide)；Traditional dry desulfurization is that fine coal is with ciculation fluidized Spraying into calcium carbonate with coal dust in bed boiler and enter boiler furnace, Decomposition of Calcium Carbonate generates calcium oxide, and the latter is with one Part oxysulfide generates calcium sulfate；And Roche dry desulfurization simply uses Calx or magnesium hydroxide and oxidation is urged Agent, wherein catalyst oxidation SO₂Become SO₃, the latter becomes calcium sulfate or and magnesium hydroxide with lime reaction Reaction generates magnesium sulfate/Magnesium hydrogen sulfate etc..

Existing desulphurization denitration material is powder or solution, in practical process, and powder or the grain of solution Degree is the smaller the better, is not suitable for the existing application using dry-method desulfurization device.

Utility model content

In place of the purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of novel structure, use Flue gas desulfurization and denitrification granule convenient with accumulating.

This utility model solves its technical problem and be the technical scheme is that

A kind of flue gas desulfurization and denitrification granule, described granule is cylinder, and its cross section is by multiple arc lobes head and the tail order Connect to enclose and form.

And, it is shaped with through hole at interval, the axially and radially direction of cylinder.

And, described granular materials is calcium hydroxide, calcium carbonate, magnesium hydroxide, magnesium carbonate, sodium carbonate or carbon At least one in acid hydrogen sodium, or remix sodium hypochlorite or potassium permanganate.

Advantage of the present utility model and good effect be:

1, the desulphurization denitration granule that this utility model provides is by uncomfortable to powder of the prior art or solution material The shortcoming closing existing apparatus, this granule is column, multiple arc lobes enclose and form, have bigger surface area, The contact area of flue gas and particle surface can be increased, improve desulfuration efficiency.

2, the preparation method of the desulphurization denitration granule that this utility model provides is simple, uses existing granule extrusion type Machine straight forming, production efficiency is high, and production cost is low.

3, the desulphurization denitration granule that this utility model provides has various structures, and centre can also be shaped with through hole, enters One step increases contact area, improves desulfuration efficiency.

Accompanying drawing explanation

Fig. 1-1 is the front view of cloverleaf pattern granule, and Fig. 1-2 is the front view of butterfly granule；

Fig. 2 is the axonometric chart of Fig. 1-2；

Fig. 3 is the structural representation of band through hole, and Fig. 3-1 is butterfly granule, and Fig. 3-2 is cloverleaf pattern granule, figure 3-3 is the perspective view of butterfly shape granule, and Fig. 3-4 is the stereochemical structure signal of another kind of butterfly shape granule Figure.

Fig. 4-1 is the schematic cross-section of Fig. 1-2；Fig. 4-2 is the schematic cross-section of Fig. 1-1.

Detailed description of the invention

The utility model is described in further detail below in conjunction with the accompanying drawings and by specific embodiment, and following example are only It is illustrative, is not determinate, it is impossible to limit protection domain of the present utility model with this.

A kind of flue gas desulfurization and denitrification granule, described granule is cylinder 2, and its cross section is by multiple arc lobes 1 head and the tail It is linked in sequence to enclose and forms, form the cylinder with relatively Large ratio surface.Granular materials is: calcium hydroxide, carbonic acid At least one in calcium, magnesium hydroxide, magnesium carbonate, sodium carbonate or sodium bicarbonate, or remix a small amount of time Sodium chlorate or potassium permanganate.

In order to increase surface further, this granule can also be shaped with multiple through hole 3 in the axially and radially direction of cylinder, Flue gas in hole by be obtained in that more fully with the touch opportunity of granule, increase flue gas stopping inside material Stay the time, improve desulfuration efficiency.

When flue gas from particle surface by time, the sulfur in flue gas by being sponged by calcium hydroxide etc. in granule, Flue gas is cleaned.

Claims

1. a flue gas desulfurization and denitrification granule, it is characterised in that: described granule is cylinder, and its cross section is linked in sequence to enclose by multiple arc lobes head and the tail and forms；It is shaped with through hole at interval, the axially and radially direction of cylinder；Described granular materials is at least one in calcium hydroxide, calcium carbonate, magnesium hydroxide, magnesium carbonate, sodium carbonate or sodium bicarbonate, or remixes sodium hypochlorite or potassium permanganate.