CN211513741U - Sintering flue gas ammonia process desulfurization thick liquid removes lime-ash device - Google Patents

Abstract

The utility model discloses a sintering flue gas ammonia desulfurization slurry ash-removing device, which relates to the technical field of sintering flue gas ammonia desulfurization, and comprises a circulating tank, wherein a filter tank is arranged in the circulating tank, the top end of the filter tank is provided with a pipeline, the pipeline is connected with a desulfurization slurry pool and a flushing water pool, the bottom end of the circulating tank is communicated with a sedimentation tank through a slurry discharging valve, a plurality of precipitated clear liquid discharging pipe valves are sequentially arranged on the side wall of the sedimentation tank from high to low, the sedimentation tank is communicated with an ash pool, a fixed polished rod is arranged in the filter tank, a plurality of filter sheets are arranged on the fixed polished rod, cylinders are arranged outside the filter sheets, piston rods of the cylinders are detachably arranged outside the corresponding filter sheets, filter pressing plates are arranged in the circulating tank, thick dust ash slurry is firstly subjected to filter pressing by the filter plates, and a large amount of dust ash slurry can be firstly filtered out in the, the residual thinner dust ash slurry is precipitated again, the precipitation process time is shortened, and the dust removal efficiency is improved.

Description

Sintering flue gas ammonia process desulfurization thick liquid removes lime-ash device

Technical Field

The utility model relates to a sintering flue gas ammonia process desulfurization technical field specifically is a sintering flue gas ammonia process desulfurization thick liquid removes lime-ash device.

Background

The sintering flue gas entering the FGD desulfurization system mostly contains dust (the dust content is about 100mg/Nm 3) because of not being treated by a dust remover or because of the influence of the treatment effect of the dust remover, after the dust enters the ammonia flue gas desulfurization system along with the desulfurization flue gas, a large amount of dust can be enriched along with the accumulation of time, the enriched dust can increase the abrasion degree of a slurry pipeline and an anticorrosive coating, simultaneously, the desulfurization by-product ammonium sulfate contains impurities, the quality of ammonium sulfate fertilizer is influenced, crystal grains become small in the crystallization process of the ammonium sulfate, and the ammonium sulfate crystal cannot be normally generated in serious cases, and finally, the desulfurization system cannot normally produce. At present, dust in domestic ammonia process flue gas desulfurization slurry is got rid of and is mainly adopted the mode of filtering and deposiing, filtration equipment is because of the cost is higher, the running cost is high, consequently, this kind of method has used very seldom, consequently most ammonia process flue gas desulfurization is removed dust mainly for adopting the manual work to clear away after deposiing in the jar, contain a certain amount of ammonium sulfate crystal in the sediment of cleaing away, consequently can give out sharp taste, the work of cleaing away is often in airtight or less jar of body that ventilates, consequently can produce a large amount of maintenance work load, cause harm to staff's health, so, we design a neotype dust collector.

SUMMERY OF THE UTILITY MODEL

In view of exist not enough among the prior art and the defect, the utility model provides a sintering flue gas ammonia process desulfurization thick liquid removes lime-ash device, simple structure, the cost is low, filters earlier, deposits again, filters moreover and adopts multilayer filter-pressing board to filter, has alleviateed very big burden to subsequent precipitation.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a sintering flue gas ammonia process desulfurization thick liquid ash removal sediment device, includes the circulating bath, be provided with the filter-tank in the circulating bath, the top of filter-tank is equipped with the pipeline, pipe connection has desulfurization thick liquid pond and wash the pond, the bottom of circulating bath is linked together through lower thick liquid valve and sedimentation tank, be equipped with a plurality of sediment clear solution discharge pipe valves on the sedimentation tank lateral wall by high to low in proper order, the lower extreme of sedimentation tank is linked together through lower sediment valve and lime-ash pond, the lime-ash pond is linked together through sediment stuff pump and sintering dosing unit, be equipped with fixed polished rod in the filter-tank, be equipped with a plurality of cassette on the fixed polished rod, the outside of leftmost side and rightmost side cassette all is equipped with the cylinder, the piston rod detachable of cylinder installs in the outside at the corresponding cassette, the tip of cylinder is fixed on the mount, the mount centers on circulating bath a week sets up, the top of the circulation groove is provided with a cover.

As a further improvement, the filter disc comprises a rectangular frame, the two ends of the rectangular frame are provided with filter screens, the end parts of the two ends are provided with the filter screens only on the inner sides of the filter disc, the filter disc is provided with slots, the slots can pass through the fixed polished rods, and the bottom of the filter tank is provided with a screen with holes.

As a further improvement of the utility model, the desulfurization slurry pond is connected to through thick liquid inflow valve the filter tank upper end on the pipeline, the wash basin is connected to on the pipeline through clear water inflow valve.

As a further improvement of the utility model, it is a plurality of the export of deposiing the clear liquid discharge pipe valve is linked together with the clear liquid discharge pipe, the afterbody of clear liquid discharge pipe is equipped with clear liquid sampling valve.

As a further improvement, the ash pond is internally provided with a slurry stirrer, the slurry stirrer and the filter sheet are all subjected to antiseptic treatment.

Compared with the prior art, the utility model discloses the beneficial effect who has does: the utility model discloses be provided with the filter-pressing board in the circulating slot, carry out the filter-pressing earlier to dense dirt powder lime-ash thick liquid with the filter-pressing board, the filter-pressing process can filter out a large amount of dirt powder lime-ash thick liquids earlier, and remaining more rare dirt powder lime-ash thick liquid deposits once more, and the sedimentation process time can shorten, has improved the efficiency of removing dust.

Drawings

The invention will be further described with reference to the accompanying drawings and specific embodiments:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of the filter of the present invention.

In the figure: 1. the device comprises a circulating tank, 2 parts of a filter tank, 4 parts of a fixing frame, 5 parts of an air cylinder, 6 parts of a fixing polished rod, 7 parts of a filter disc, 701 parts of a rectangular frame, 702 parts of a filter screen, 703 parts of a slot, 8 parts of a cover, 9 parts of a pipeline, 10 parts of a slurry inflow valve, 11 parts of a clear water inflow valve, 12 parts of a desulfurization slurry tank, 13 parts of a flushing water tank, 14 parts of a slurry discharging valve, 15 parts of a sedimentation tank, 16 parts of a sedimentation clear liquid discharging pipe valve, 17 parts of a clear liquid discharging pipe, 18 parts of a clear liquid sampling valve, 19 parts of a slag discharging valve, 20 parts of a slag tank, 21 parts of a slurry stirrer, 22 parts of a slag slurry pump.

It is noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Detailed Description

In order to make the technical solution and the advantages of the present invention more clear and more obvious, the present invention is further described in detail with reference to the accompanying drawings and the specific embodiments, it should be understood that the specific embodiments described herein are only used for understanding the present invention, and are not used for limiting the present invention, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

As shown in figure 1, the utility model relates to a sintering flue gas ammonia desulfurization slurry ash removal device, which comprises a circulating tank 1, a filter tank 2 is arranged in the circulating tank 1, a pipeline 9 is arranged at the top end of the filter tank 2, the pipeline 9 is connected with a desulfurization slurry pool 12 and a flushing water pool 13, the bottom end of the circulating tank 1 is communicated with a sedimentation tank 15 through a slurry discharge valve 14, a plurality of precipitated clear liquid discharge pipe valves 16 are sequentially arranged on the side wall of the sedimentation tank 15 from high to low, the lower end of the sedimentation tank 15 is communicated with an ash pool 20 through a slurry discharge valve 19, the ash pool 20 is communicated with a sintering batching device 23 through a slurry pump 22, a fixed polished rod 6 is arranged in the filter tank 2, a plurality of filter sheets 7 are arranged on the fixed polished rod 6, air cylinders 5 are arranged outside the leftmost filter sheets 7 and the rightmost filter sheets 7, and piston rods of the air cylinders 5 are detachably arranged outside the corresponding filter sheets 7, the end part of the cylinder 5 is fixed on a fixed frame 4, the fixed frame 4 is arranged around the circulation tank 1 for one circle, and the top of the circulation tank 1 is provided with a cover 8; the desulfurization slurry tank 12 is connected to the pipeline 9 at the upper end of the filter tank 2 through a slurry inflow valve 10, and the flushing water tank 13 is connected to the pipeline 9 through a clear water inflow valve 11; the outlets of a plurality of settled clear liquid discharge pipe valves 16 are communicated with a clear liquid discharge pipe 17, and a clear liquid sampling valve 18 is arranged at the tail part of the clear liquid discharge pipe 17; a slurry stirrer 21 is arranged in the ash residue pool 20, and the slurry stirrer 21 and the filter sheet 7 are subjected to antiseptic treatment.

As shown in fig. 2, the filter sheet 7 includes a rectangular frame 701, filter screens 702 are disposed at two ends of the rectangular frame 701, only the inner sides of the filter sheets 7 at the two end portions are provided with the filter screens, a slot 703 is disposed on the filter sheet 7, the slot 703 can pass through the fixed polish rod 6, and the bottom end of the filter tank 2 is a screen with holes.

The utility model relates to a sintering flue gas ammonia process desulfurization thick liquid removes lime-ash device when using, the dust-laden powder lime-ash thick liquid passes through transport modes such as thick liquid pump among the desulfurization system and gets into filter tank 2, stop the thick liquid to get into after reaching certain liquid level, open the cylinder 5 at both ends, the piston rod begins inwards translation, drive filter plate 7 and extrude, in extrusion process, most dust powder lime-ash is extruded by filter plate 7 and is become solid state, then open the lid 8 of circulating slot 1, take out filter plate 7, take out the dust powder lime-ash of solid state and carry out next step's processing, open lower thick liquid valve 14, liquid and the dust ash of subtotal flow in deposit, 15 in, begin to carry out the thick liquid sedimentation process, settling time can be set for by oneself according to the condition of thick liquid dust ash content, the lime-ash after the sediment can deposit at sedimentation tank lower extreme position, simultaneously open from the sedimentation tank top in proper order and deposit clear liquid discharge, and (3) performing layer-by-layer discharge, simultaneously, sampling from a clear liquid sampling valve 18 to observe the clear liquid condition when a precipitated clear liquid discharge pipe valve 16 is opened every time, stopping clear liquid discharge until the slurry is obviously turbid, closing all opened precipitated clear liquid discharge pipe valves 18, returning the discharged clear liquid to a flushing water tank 13 to be used as make-up water, then opening a slag discharging valve 19 and the flushing water tank 13 to allow the clear water to flow into a valve 11, putting a little clear water, discharging dust powder ash into an ash slag tank 20, then opening a slurry stirrer 21, stirring for a certain time, opening a slurry pump 22, discharging the ash slag slurry into a sintering batching device 23, and batching as a sintering raw material.

Claims (5)

1. The utility model provides a sintering flue gas ammonia process desulfurization thick liquid ash removal sediment device which characterized in that: comprises a circulating tank (1), a filter tank (2) is arranged in the circulating tank (1), a pipeline (9) is arranged at the top end of the filter tank (2), the pipeline (9) is connected with a desulfurization slurry pool (12) and a flushing water pool (13), the bottom end of the circulating tank (1) is communicated with a sedimentation tank (15) through a slurry discharging valve (14), a plurality of sedimentation clear liquid discharging pipe valves (16) are sequentially arranged on the side wall of the sedimentation tank (15) from high to low, the lower end of the sedimentation tank (15) is communicated with an ash slag pool (20) through a slag discharging valve (19), the ash slag pool (20) is communicated with a sintering batching device (23) through a slag slurry pump (22), a fixed polished rod (6) is arranged in the filter tank (2), a plurality of filter sheets (7) are arranged on the fixed polished rod (6), and air cylinders (5) are arranged outside the filter sheets (7) which are positioned on the leftmost side and the rightmost side, the piston rod of cylinder (5) detachable installs in the outside of corresponding cassette (7), the tip of cylinder (5) is fixed on mount (4), mount (4) surround circulation groove (1) a week sets up, and the top of circulation groove (1) is equipped with lid (8).

2. The device for removing ash from the sintering flue gas ammonia desulphurization slurry according to claim 1, characterized in that: the filter disc (7) comprises a rectangular frame (701), filter screens (702) are arranged at two ends of the rectangular frame (701), only the inner sides of the filter discs (7) at the end parts of the two ends are provided with the filter screens, a notch (703) is formed in each filter disc (7), the notch (703) penetrates through the fixed polished rod (6), and the bottom end of the filter tank (2) is provided with a screen with holes.

3. The device for removing ash from the sintering flue gas ammonia desulphurization slurry according to claim 1, characterized in that: the desulfurization slurry tank (12) is connected to the pipeline (9) at the upper end of the filter tank (2) through a slurry inflow valve (10), and the flushing water tank (13) is connected to the pipeline (9) through a clean water inflow valve (11).

4. The device for removing ash from the sintering flue gas ammonia desulphurization slurry according to claim 1, characterized in that: the outlets of the sedimentation clear liquid discharge pipe valves (16) are communicated with a clear liquid discharge pipe (17), and a clear liquid sampling valve (18) is arranged at the tail part of the clear liquid discharge pipe (17).

5. The device for removing ash from the sintering flue gas ammonia desulphurization slurry according to claim 1, characterized in that: and a slurry stirrer (21) is arranged in the ash residue pool (20), and the slurry stirrer (21) and the filter disc (7) are subjected to antiseptic treatment.

Images