CN205294871U - Large granule urea device waste liquid treatment device - Google Patents

Large granule urea device waste liquid treatment device Download PDF

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Publication number
CN205294871U
CN205294871U CN201520937202.9U CN201520937202U CN205294871U CN 205294871 U CN205294871 U CN 205294871U CN 201520937202 U CN201520937202 U CN 201520937202U CN 205294871 U CN205294871 U CN 205294871U
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China
Prior art keywords
pipeline
liquid
large granule
threeway
reservoir
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CN201520937202.9U
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Chinese (zh)
Inventor
李玉顺
袁红玲
王攀
郭存彪
杨星波
庞伟玲
梁斐
吴培
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Henan Xinlianxin Chemicals Group Co Ltd
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Henan Xinlianxin Fertilizer Co Ltd
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Abstract

The utility model belongs to a large granule urea device waste liquid treatment device, including large granule urea device, urea solution pipeline, it is continuous with vapour and liquid separator's import that large granule urea device passes through steam heater, the gas outlet at vapour and liquid separator top passes through the pipeline and links to each other with the tube side of condenser and the top of reservoir in proper order, the reservoir lower part is equipped with liquid outlet and circulation liquid outlet, the reservoir liquid outlet is equipped with the liquid that the outband sent the pump sends the pipeline outside, it is continuous with the liquid import of circulating pump and sprayer in proper order that reservoir circulation liquid outlet passes through the pipeline, the gas feed that the gas vent on the tube side upper portion of condenser passes through pipeline and sprayer links to each other, the circulation inlet that pipeline and reservoir top are passed through in the export of sprayer links to each other, the top of reservoir is equipped with gaseous emptying pipeline, have small investment, simple process, the difficult bottleneck of liquid water disposal has been solved to advantage that the running cost is low, the nature controlled is strong, brings immensurable economy and social for the enterprise.

Description

Large granule urea plant liquid waste treating apparatus
Technical field
This utility model belongs to granular urea waste liquid recycling technical field, is specifically related to a kind of large granule urea plant liquid waste treating apparatus.
Background technology
Form a complete production network in large granule urea plant at existing common urea, all can produce the scrub raffinate that concentration is 43��55%; At present, what major part carbamide enterprise adopted is all the method that will re-use in this part waste back-cycling to common urea production system. Although said method is simple directly still there is also following shortcoming: one is in bulky grain device waste back-cycling common urea production system, recycle process route longer, consume relatively big, and also the stability of common urea production system can be affected, causing frequent operation, security performance reduces; Two is that bulky grain all can add formalin in process of production to increase the intensity of carbamide, and common urea produces and is not required to add formaldehyde, the content of the enterprise's PARA FORMALDEHYDE PRILLS(91,95) even having also has is strict with, if the waste back-cycling produced by bulky grain device is in common urea production system, then the purity of common urea can be impacted; Three is that current a lot of enterprise utilizes bulky grain device research and development carbamide new product, usually need in bulky grain device, add some new materials, as controlled mistake agent, polypeptide, humic acids etc., waste liquid containing novel substance then can not return in the production system of common urea, can only sell outward or destroy.
Utility model content
The purpose of this utility model be in that to overcome defect of the prior art and provide that a kind of simple in construction, property reasonable in design, controllable are strong, large granule urea plant waste liquid can be carried out effective recycling, reduce enterprise's production cost, large granule urea plant liquid waste treating apparatus that to solve discharging of waste liquid difficult.
The purpose of this utility model is achieved in that and includes large granule urea plant, the urea liquid conveyance conduit being connected with large granule urea plant import, the waste liquid outlet of large granule urea plant is connected with the tube side import of steam heater by pipeline, the tube side outlet of steam heater is connected with the import of gas-liquid separator by pipeline, the gas outlet at gas-liquid separator top is connected with the tube side of condenser and the top of reservoir successively by pipeline, the bottom of described reservoir is respectively equipped with liquid outlet and circulation liquid outlet, the liquid that described reservoir liquid outlet is provided with sending outside pump sends pipeline outside, described reservoir circulation liquid outlet is connected with the liquid-inlet of circulating pump and ejector successively by pipeline, the air vent on the tube side top of condenser is connected with the gas feed of ejector by pipeline, the outlet of ejector is connected with the circulation inlet at reservoir top by pipeline, the top of described reservoir is provided with gas exhausting pipeline,Liquid outlet bottom gas-liquid separator is connected with the 3rd threeway the 3rd end on urea liquid conveyance conduit by pipeline, is provided with pipe-line mixer between described 3rd threeway and large granule urea plant; Described steam heater shell side import is connected with low-pressure steam pipeline, and steam heater shell-side outlet is connected with condensed fluid pipeline; Described condenser shell side import is connected with cool cycles waterpipe, and condenser shell side import is connected with cooling circulating water water return pipeline.
Preferably, the pipeline between waste liquid outlet and the tube side of steam heater of described large granule urea plant is provided with the first threeway, and the 3rd end of described first threeway is connected with common urea process units.
Preferably, the pipeline between liquid outlet and the 3rd threeway the 3rd end bottom described gas-liquid separator is provided with the second threeway, and the 3rd end of described second threeway is provided with sends pipeline outside.
Preferably, described liquid sends Pipe installing outside the first valve.
Preferably, it is provided with the 4th valve between described 3rd threeway the 3rd end and the second threeway.
Preferably, the pipeline between described first threeway and the tube side of steam heater is provided with the second valve; Between 3rd end and the common urea process units of described first threeway, the 3rd valve is installed.
Preferably, send outside described in and pipeline is provided with the 3rd valve.
This utility model is by newly-increased steam heater, gas-liquid separator, condenser, reservoir, circulating pump, the equipment such as ejector, appropriate design process route and technological parameter, temperature 104��111 DEG C, under pressure-0.034MPa condition, the high concentration urea solution that the waste liquid that concentration is 43%��55% concentration is 70%��80% that bulky grain device is produced, and return the recycling of bulky grain device charging aperture, make full use of the Flexible Design of bulky grain device feedstock, the urine that former input concentration is 99% is reduced to 96% charging, realize waste liquid from originating from the purpose disappeared, thus changing the drawback of rare waste back-cycling common urea production system of existing 43%��55%, greatly reduce cost consumption and the potential safety hazard of urea system, avoid bulky grain device to the impact in every respect of common urea system, there is small investment, technique simply, the advantages such as operating cost property low, controllable is strong, it is most important that solve the bottleneck of the liquid waste processing difficulty that enterprise runs in new product produces, bring immeasurable economic and social benefit for enterprise.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to technical characteristic of the present utility model, purpose and effect are more clearly understood from, now comparison accompanying drawing illustrates detailed description of the invention of the present utility model, and label identical in the various figures represents identical parts. For making simplified form, only schematically show the part relevant to utility model in each figure, they do not represent its practical structures as product.
As shown in Figure 1, this utility model includes large granule urea plant 1, the urea liquid conveyance conduit 9 being connected with large granule urea plant 1 import, the waste liquid outlet of large granule urea plant 1 is connected with the tube side import of steam heater 2 by pipeline, the tube side outlet of steam heater 2 is connected by the import of pipeline with gas-liquid separator 3, the gas outlet at gas-liquid separator 3 top is connected with the top of the tube side of condenser 4 and reservoir 5 successively by pipeline, the bottom of described reservoir 5 is respectively equipped with liquid outlet and circulation liquid outlet, the liquid that described reservoir 5 liquid outlet is provided with sending outside pump 8 sends pipeline 14 outside, described reservoir 5 is circulated liquid outlet and is connected with the liquid-inlet of circulating pump 6 and ejector 7 successively by pipeline, the air vent on the tube side top of condenser 4 is connected with the gas feed of ejector 7 by pipeline, the outlet of ejector 7 is connected by the circulation inlet of pipeline with reservoir 5 top, the top of described reservoir 5 is provided with gas exhausting pipeline 10,Liquid outlet bottom gas-liquid separator 3 is connected with the 3rd threeway 23 the 3rd end on urea liquid conveyance conduit 9 by pipeline, is provided with pipe-line mixer 24 between described 3rd threeway 23 and large granule urea plant 1; Described steam heater 2 shell side import is connected with low-pressure steam pipeline 19, and steam heater 2 shell-side outlet is connected with condensed fluid pipeline 20; Described condenser 4 shell side import is connected with cool cycles waterpipe 21, and condenser 4 shell side import is connected with cooling circulating water water return pipeline 22. Pipeline between waste liquid outlet and the tube side of steam heater 2 of described large granule urea plant 1 is provided with the first threeway 11, and the 3rd end of described first threeway 11 is connected with common urea process units 26. The pipeline between liquid outlet and the 3rd threeway 23 the 3rd end bottom described gas-liquid separator 3 is provided with the second threeway 12, and the 3rd end of described second threeway 12 is provided with sends pipeline 13 outside. Described liquid is sent pipeline 14 outside and is provided with the first valve 15. It is provided with the 4th valve 25 between described 3rd threeway 23 the 3rd end and the second threeway 12. Pipeline between described first threeway 11 and the tube side of steam heater 2 is provided with the second valve 16; Between 3rd end and the common urea process units 26 of described first threeway 11, the 3rd valve 17 is installed. Described sending outside is provided with the 3rd valve 18 on pipeline 13.
The processing method of a kind of large granule urea plant liquid waste treating apparatus, comprises the steps:
One, enter large granule urea plant 1 from the urea liquid of urea liquid conveyance conduit 9 by the 3rd threeway 23 and pipe-line mixer 24 and produce granular urea, and produce the waste liquid that urea concentration is 43%��55% and discharged by the waste liquid outlet of large granule urea plant 1;
Two, the waste liquid that urea concentration is 43%��55% that described step one is discharged by the waste liquid outlet of large granule urea plant 1 enters the tube side of steam heater 2, at steam heater 2 shell side, above-mentioned waste liquid is carried out heat exchange by low-pressure steam, waste liquid after heat exchange enters in the middle part of gas-liquid separator 3, and the waste liquid temperature after described heat exchange is risen to 104��111 DEG C by 40��50 DEG C;
Three, in described step 2, the waste liquid entered in the middle part of gas-liquid separator 3 is separated into liquid and gas two parts, liquid concentration after concentration is 70%��80%, it enters urea liquid conveyance conduit 9 by the second threeway the 12, the 4th valve 25 and the 3rd threeway 24, it mixes in pipe-line mixer 24 with the urea liquid that concentration in urea liquid conveyance conduit 9 is 99%, forms the urea liquid entrance granular urea device 1 that concentration is 96% and produces granular urea; Described unlatching the 4th valve 25 simultaneously close off the 3rd valve 18;
Four, described step 3 is entered by the gas outlet at gas-liquid separator 3 top the tube side of condenser 4 by the isolated gas of gas-liquid separator 3, being entered condenser 4 shell side by cooling circulating water and above-mentioned gas is carried out heat exchange cooling, the gas after heat exchange cooling is divided into water and incoagulable gas; Temperature after above-mentioned gas heat exchange cooling is 40��50 DEG C;
Five, in described step 4, water after heat exchange cooling enters in reservoir 5, and form loop with circulating pump 6 and ejector 7, incoagulable gas in described step 4 enters in reservoir 5 by the gas feed of condenser 4 tube side upper air vent and ejector 7, by the effect of ejector 7 to condenser 4 tube side evacuation, and making this process device be in negative pressure state, pressure is :-0.034MPa;
Six, the incoagulable gas entered in described step 5 in reservoir 5 is discharged by gas exhausting pipeline 10;
Seven, when the liquid level of water is not less than 2/3 in reservoir 5 in described step 4, open the first valve 15, open and send pump 8 outside, make water discharge reservoir 5; When the liquid level of water is not more than 1/2 in reservoir 5, closes and send pump 8 and the first valve 15 outside;
Eight, when this process device is in dead ship condition or service mode, described step one is discharged, by large granule urea plant 1 waste liquid outlet, the waste liquid that urea concentration is 43%��55% and is directly entered in common urea process units 26 by the 3rd end of the first threeway 11 and the 3rd valve 17 to use as the raw material of common urea;
Nine, when need concentration after liquid concentration be 70%��80% carbamide recycle by other means or sell time, in described step 3, the liquid concentration after concentration is 70%��80%, it is discharged by the 3rd end of the second threeway 12 and the 3rd valve 18, then open the 3rd valve 18 simultaneously close off the 4th valve 25.
Large granule urea plant 1 raw material described in the utility model is the urea liquid of 96%��99%; It commercially can directly be purchased its structure and repeat no more. First end of described first threeway 11 is connected with large granule urea plant 1 waste liquid outlet, and its second end is connected with the tube side several mouthfuls of steam heater 2, and the 3rd end is connected with the material inlet of common urea process units by the 3rd valve 17; First end of described second threeway is connected with the liquid outlet bottom gas-liquid separator 3, and its second end is connected with the 3rd threeway 23 the 3rd end by the 4th valve 25, the 3rd end is provided with and sends pipeline 13 outside; First end of described 3rd threeway 23 is connected with urea liquid conveyance conduit 9, and its second end is connected with pipe-line mixer 24.
The a series of detailed description of those listed above is only for illustrating of feasibility embodiment of the present utility model; they are also not used to limit protection domain of the present utility model, all should be included within protection domain of the present utility model without departing from this utility model skill equivalent implementations of making of spirit or change. It is to be noted in this article, " first ", " second " etc. are only for differentiation each other, but not represent their significance level and order etc.

Claims (7)

1. a large granule urea plant liquid waste treating apparatus, including large granule urea plant (1), the urea liquid conveyance conduit (9) being connected with large granule urea plant (1) import, it is characterized in that: the waste liquid outlet of large granule urea plant (1) is connected with the tube side import of steam heater (2) by pipeline, the tube side outlet of steam heater (2) is connected by the import of pipeline with gas-liquid separator (3), the gas outlet at gas-liquid separator (3) top is connected with the top of the tube side of condenser (4) and reservoir (5) successively by pipeline, the bottom of described reservoir (5) is respectively equipped with liquid outlet and circulation liquid outlet, described reservoir (5) liquid outlet is provided with sending outside the liquid of pump (8) and sends pipeline (14) outside, described reservoir (5) circulation liquid outlet is connected with the liquid-inlet of circulating pump (6) and ejector (7) successively by pipeline, the air vent on the tube side top of condenser (4) is connected with the gas feed of ejector (7) by pipeline, the outlet of ejector (7) is connected by the circulation inlet of pipeline with reservoir (5) top, the top of described reservoir (5) is provided with gas exhausting pipeline (10), the liquid outlet of gas-liquid separator (3) bottom is connected with the 3rd threeway (23) the 3rd end being arranged on urea liquid conveyance conduit (9) by pipeline, is provided with pipe-line mixer (24) between described 3rd threeway (23) and large granule urea plant (1),Described steam heater (2) shell side import is connected with low-pressure steam pipeline (19), and steam heater (2) shell-side outlet is connected with condensed fluid pipeline (20); Described condenser (4) shell side import is connected with cool cycles waterpipe (21), and condenser (4) shell side import is connected with cooling circulating water water return pipeline (22).
2. large granule urea plant liquid waste treating apparatus according to claim 1, it is characterized in that: the pipeline between waste liquid outlet and the tube side of steam heater (2) of described large granule urea plant (1) is provided with the first threeway (11), and the 3rd end of described first threeway (11) is connected with common urea process units (26).
3. large granule urea plant liquid waste treating apparatus according to claim 1, it is characterized in that: the pipeline between liquid outlet and the 3rd threeway (23) the 3rd end of described gas-liquid separator (3) bottom is provided with the second threeway (12), and the 3rd end of described second threeway (12) is provided with sends pipeline (13) outside.
4. large granule urea plant liquid waste treating apparatus according to claim 1, it is characterised in that: described liquid is sent pipeline (14) outside and is provided with the first valve (15).
5. large granule urea plant liquid waste treating apparatus according to claim 1, it is characterised in that: it is provided with the 4th valve (25) between described 3rd threeway (23) the 3rd end and the second threeway (12).
6. large granule urea plant liquid waste treating apparatus according to claim 2, it is characterised in that: the pipeline between described first threeway (11) and the tube side of steam heater (2) is provided with the second valve (16); Between 3rd end and the common urea process units (26) of described first threeway (11), the 3rd valve (17) is installed.
7. large granule urea plant liquid waste treating apparatus according to claim 3, it is characterised in that: described in send outside pipeline (13) be provided with the 3rd valve (18).
CN201520937202.9U 2015-11-23 2015-11-23 Large granule urea device waste liquid treatment device Active CN205294871U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520937202.9U CN205294871U (en) 2015-11-23 2015-11-23 Large granule urea device waste liquid treatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520937202.9U CN205294871U (en) 2015-11-23 2015-11-23 Large granule urea device waste liquid treatment device

Publications (1)

Publication Number Publication Date
CN205294871U true CN205294871U (en) 2016-06-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105417602A (en) * 2015-11-23 2016-03-23 河南心连心化肥有限公司 Large granulated urea device liquid waste treatment device and treatment method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105417602A (en) * 2015-11-23 2016-03-23 河南心连心化肥有限公司 Large granulated urea device liquid waste treatment device and treatment method
CN105417602B (en) * 2015-11-23 2018-02-13 河南心连心化肥有限公司 Large granule urea plant liquid waste treating apparatus and processing method

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Address after: 453731 Henan Xinxiang Economic Development Zone, Xinxiang City, Henan Province (Xiaoji Town)

Patentee after: Henan Xinlianxin Chemical Industry Group Co., Ltd.

Address before: 453731 Henan Xinxiang Economic Development Zone Xiaoji Town Henan Xinlianxin Chemical Fertilizer Co., Ltd.

Patentee before: Henan XInlianxin Fertiliser Limited Company