CN206746300U - A kind of absorption tower with selective serum recycle system - Google Patents

A kind of absorption tower with selective serum recycle system Download PDF

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Publication number
CN206746300U
CN206746300U CN201720314516.2U CN201720314516U CN206746300U CN 206746300 U CN206746300 U CN 206746300U CN 201720314516 U CN201720314516 U CN 201720314516U CN 206746300 U CN206746300 U CN 206746300U
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slurries
absorption tower
values
spray
slurry pool
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赵红峰
刘尉华
艾金华
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Hunan Jie Jie Jie Environmental Protection Technology Co Ltd
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Hunan Jie Jie Jie Environmental Protection Technology Co Ltd
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Abstract

A kind of absorption tower with selective serum recycle system, include spray fluid circulation and serum recycle system in tower body, the spray fluid circulation is provided with Multi-layer sprinkling liquid spray pipeline in the middle part of the tower body of absorption tower, the serum recycle system includes high ph-values slurry pool, circulating pump is provided with by this high ph-values slurry pool side, and high ph-values slurries spray pipeline is connected with absorption tower tower body top by this circulating pump, this high ph-values slurries spray pipeline is higher than the spray liquid spray pipeline in spray fluid circulation, and the slurries collection device passed through for flue gas is provided between high ph-values slurries spray pipeline and spray liquid spray pipeline, and the collecting terminal of the slurries collection device is then connected by pipeline with high ph-values slurry pool.The utility model is simple to operate, does not increase external equipment additionally, can meet the operation demand of existing desulfuration absorbing tower minimum discharge spraying layer to greatest extent.

Description

A kind of absorption tower with selective serum recycle system
Technical field
Desulphurization plant technical field is the utility model is related to, is specially that one kind is applied to boiler of power plant, industrial boiler desulfurizing The selective serum recycle system on absorption tower.
Background technology
Wet desulphurization occuping market is dominated at present, currently in order to reaching more preferable desulfurization operation effect or minimum discharge It is required that absorption tower passes through the two-level absorption tower for being provided with series connection or external independent secondary tower(Single column Two-way Cycle)To obtain high pH value Slurries carry out desulphurization circulating, and finally obtain more preferable desulfurized effect.But two level tower of the prior art absorbs or single column The shortcomings of binary cycle system generally existing is disposably put into greatly, and operational outfit is more, complex operation, and equipment failure rate is high, thus have Necessity makes improvements.
Utility model content
The technical problem that the utility model solves is to provide a kind of absorption tower with selective serum recycle system, This serum recycle system can effectively meet the production link demand of the high pH value slurries of enterprise's desulfurization minimum discharge, while this is grasped Make simple, it is not necessary to add any equipment more, desulfurization operation expense is effectively reduced, to solve the shortcomings that in above-mentioned background technology.
The technical problem that the utility model solves is realized using following technical scheme:
A kind of absorption tower with selective serum recycle system, its tower body is interior to include spray fluid circulation and slurries The circulatory system, the spray fluid circulation are provided with Multi-layer sprinkling liquid spray pipeline, the slurries in the middle part of the tower body of absorption tower The circulatory system includes high ph-values slurry pool, circulating pump is provided with by this high ph-values slurry pool side, and inhaling by this circulating pump Receive tower tower body top and be connected with high ph-values slurries spray pipeline, this high ph-values slurries spray pipeline is higher than in spray fluid circulation Spray liquid spray pipeline, and be provided with what is passed through for flue gas between high ph-values slurries spray pipeline and spray liquid spray pipeline Slurries collection device, and the collecting terminal of the slurries collection device is then connected by pipeline with high ph-values slurry pool.
In the utility model, the slurries collection device is multistage funnel structure, the most upper rank of this multistage funnel it is upper Surface outer diameter is consistent with absorption tower internal diameter, and the lower rank upper surface external diameter in adjacent rank is slightly larger than upper rank lower surface external diameter with convenient Slurries are collected, meanwhile, also leave the gap passed through for flue gas between the adjacent rank of the multistage funnel.
In the utility model, the slurries collection device is that multistage funnel structure is preferably two ranks or three rank infundibular ganglions Structure.
In the utility model, the smoke inlet of the absorption tower tower body is located under spray liquid spray pipeline.
In the utility model, the high ph-values slurry pool top is provided with fresh slurry inlet, and is then set in bottom Be equipped with gypsum slurries outlet and bottom drain, and the gypsum slurries outlet directly with absorption tower tower reactor slurries area phase Even.
In the utility model, the oxidation wind for extending into high ph-values slurry pool bottom is provided with the high ph-values slurry pool Pipe, be passed through oxidation air into high ph-values slurry pool by oxidation air effectively can prevent from sinking to carry out desulfurization product oxidation Starch precipitates.
In the utility model, agitating device is provided with the high ph-values slurry pool.
In the utility model, slurries parameter on-line monitoring device is provided with the high ph-values slurry pool, it is described online Monitoring device includes online PH sensor, online serum density sensor.
The advantages of the utility model and beneficial effect are:
1)Desulfuration efficiency is high, fully meets minimum discharge demand
2)It is improved under conventional process conditions, its technical maturity, stable performance, security performance is high.
3)Equipment is once invested small, and fault rate is low, easy to operate reliable, and the limited space that is particularly suitable for use in puies forward mark transformation work Journey.
4)Automation degree of equipment is high, and service life length, high pH value slurry room slurries are not required to processing and are directly discharged into absorption tower Tower reactor slurries area participates in the circulation of high-sulfur area, thus need not additionally increase gypsum processing apparatus, and attached corollary equipment is few, running cost With low.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model preferred embodiment.
Wherein:1st, slurries collection device;2nd, upper strata spray liquid spray pipeline;3rd, lower floor's spray liquid spray pipeline;4th, flue gas Import;5th, spray liquid circulating pump;6th, absorption tower tower reactor slurries area;7th, gypsum slurries outlet;8th, bottom drain;9th, high pH value Slurry circulating pump;10th, agitator;11st, on-Line Monitor Device;12nd, oxidation air;13rd, high pH value slurry pool;14th, fresh slurry Inlet;15th, serum recycle pipeline;16th, high pH value slurries recovery pipe;17th, high ph-values slurries spray pipeline.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to a kind of preferred embodiment on Fig. 1 absorption tower with selective serum recycle system, in the present embodiment, Absorption tower is for the absorption tower run under the conditions of minimum discharge, its desired SO2Concentration of emission≤35mg/Nm3;Suitable for calcium The wet desulphurization environment such as method, magnesium processes, filter calcium desulfurizing.
Include spray fluid circulation and serum recycle system in the absorbing tower body, wherein, spray fluid circulation Including spray liquid circulating pump 5 and the circulation line being connected with spray liquid circulating pump 5, this circulation line top connection upper strata spray Liquid spray pipeline 2 and lower floor's spray liquid spray pipeline 3 and gas approach 4 is then molded under lower floor's spray liquid spray pipeline 3 Absorbing tower side by.And the main body in serum recycle system is high ph-values slurry pool 13, this top of high ph-values slurry pool 13 High ph-values slurries spray pipeline 17 is connected by serum recycle pipeline 15, and is provided with the bottom of high ph-values slurries spray pipeline 17 Surface outer diameter two rank funnel structures consistent with footpath in absorbing tower body in the top are as slurries absorption plant 1, and this slurries is inhaled Gap is left between the not same order of two rank funnel structures of receiving apparatus 1, and the lower rank upper surface external diameter in adjacent rank is slightly larger than upper Rank lower surface external diameter.
Because the lower rank upper surface external diameter in slurries absorption plant 1 is slightly larger than upper rank lower surface external diameter so that high ph-values are starched In spray, spray liquid energy drops onto on lower stage structure liquid spray pipeline 17 along upper rank inside edge, and at lower stage structure bottom Portion is recovered in slurries absorption plant 1 by high pH value slurries recovery pipe 16, and flue gas is by upper strata spray liquid spray pipeline 2 And lower floor's spray liquid spray pipeline 3 spray after continue up, and from the gap between the lower rank and upper rank of slurries absorption plant 1 In by and via the slurries that are sprayed in high ph-values slurries spray pipeline 17 carry out SO2Absorption.
Meanwhile the agitator 10 stretched into high pH value slurry pool 13, on-line monitoring are provided with high pH value slurry pool 13 Device 11, oxidation air 12, fresh slurry inlet 14 and the bottom drain 8 for cleaning and maintenance, whole absorption tower Serum recycle system is operationally the reversible reaction for preventing desulfurization product, and high pH value slurry pool 13 is by blasting oxidation air 12 Oxidation air is aoxidized desulfurization product, forms stable gypsum product.Meanwhile by agitator 10 in high pH value slurry pool 13 Interior lasting stirring prevents gypsum from being deposited in high PH slurry rooms.
And on-Line Monitor Device 11 includes online pH sensors and online serum density sensor.Due to the present embodiment SO is carried out for low-sulfur area flue gas2Absorption and removing.Because this region SO2 comparision contents are low, reach minimum discharge standard, This region need to have high pH value slurries(9~11)As guarantee, higher clearance is can be only achieved, is set according to desulfurization removal efficiency The setting range of line pH sensors is pH value 9 ~ 11, when pH value is less than 9 in high pH value slurry pool 13, is then noted by fresh slurry Entrance 14 is automatically replenished fresh slurry.And with the continuous absorption cycle of slurries in high pH value slurry pool 13, slurry specific gravity increase Proportion can gradually increase, when online serum density sensor detect the proportion of slurries increase to setting critical value when(At this It is 1100Kg/m in embodiment3), then the discharge part slurries of gypsum slurries outlet 7 are opened to absorption tower tower reactor slurries area 6, together When by fresh slurry inlet 14 supplement part fresh slurry to improve plasm PH value, to meet serum recycle requirement and ensure Desulfuration efficiency.Whole operation process can be realized unattended, and manipulation is convenient, reliable.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model Claimed scope is by appended claims and its equivalent thereof.

Claims (9)

1. a kind of absorption tower with selective serum recycle system, it is characterised in that include spray fluid circulation in tower body And serum recycle system, the spray fluid circulation are provided with Multi-layer sprinkling liquid spray pipeline in the middle part of the tower body of absorption tower, The serum recycle system includes high ph-values slurry pool, is provided with circulating pump by this high ph-values slurry pool side, and follow by this Ring pump is connected with high ph-values slurries spray pipeline on absorption tower tower body top, and this high ph-values slurries spray pipeline follows higher than spray liquid Spray liquid spray pipeline in loop system, and be provided between high ph-values slurries spray pipeline and spray liquid spray pipeline for cigarette The slurries collection device that gas passes through, and the collecting terminal of the slurries collection device is then connected by pipeline with high ph-values slurry pool.
2. absorption tower according to claim 1, it is characterised in that the slurries collection device is multistage funnel structure, this The upper surface external diameter of the most upper rank of multistage funnel is consistent with absorption tower internal diameter, and the lower rank upper surface external diameter in adjacent rank is slightly larger than Upper rank lower surface external diameter is to facilitate slurries to collect, while between also leaving between the adjacent rank of multistage funnel and passing through for flue gas Gap.
3. absorption tower according to claim 2, it is characterised in that the slurries collection device is that multistage funnel structure is two Rank or three rank funnel structures.
4. absorption tower according to claim 1, it is characterised in that the smoke inlet of the absorption tower tower body is located at spray liquid Under spray pipeline.
5. absorption tower according to claim 1, it is characterised in that the high ph-values slurry pool top is provided with fresh slurry Inlet, and gypsum slurries outlet and bottom drain are then provided with bottom.
6. absorption tower according to claim 5, it is characterised in that the gypsum slurries outlet directly with absorption tower tower reactor Slurries area is connected.
7. absorption tower according to claim 1, it is characterised in that be provided with the high ph-values slurry pool and extend into high pH It is worth the oxidation air of slurry pool bottom.
8. absorption tower according to claim 1, it is characterised in that be provided with agitating device in the high ph-values slurry pool.
9. absorption tower according to claim 1, it is characterised in that online PH sensings are provided with the high ph-values slurry pool Device and online serum density sensor.
CN201720314516.2U 2017-03-29 2017-03-29 A kind of absorption tower with selective serum recycle system Active CN206746300U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110013765A (en) * 2019-04-03 2019-07-16 哈尔滨工程大学 A kind of ship tail gas denitration integrated device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110013765A (en) * 2019-04-03 2019-07-16 哈尔滨工程大学 A kind of ship tail gas denitration integrated device

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