CN208932121U - Modified automatic batch-type lime mud point sprays feeding device - Google Patents

Abstract

The utility model relates to salt refining clarification system lime mud feeding devices more particularly to a kind of automatic batch-type lime mud point to spray feeding device.A kind of modified automatic batch-type lime mud point spray feeding device, including pipeline, flowmeter, operated pneumatic valve and DCS controller, it is characterized by: installing flowmeter and operated pneumatic valve on lime mud main pipe line, it is evenly distributed with branch line on several directions of main pipe line, electromagnetic valve is installed respectively on each branch line.Compared with prior art, the utility model dosing form is more reasonable convenient for the utility model, can effectively avoid the blocking of pipeline, reduces post operation personnel labor intensity；Single barrel of lime mud charging more even, primary brine turbidity is substantially reduced, and improves the quality of secondary refining calcium carbonate product.

Description

Modified automatic batch-type lime mud point sprays feeding device

Technical field

The utility model relates to salt refining clarification system lime mud feeding device more particularly to a kind of automatic batch-type are severe Change mud point and sprays feeding device.

Background technique

The preparation method of existing refined brine is generally two step salt dissolving of seawater, three secondary clearings, and main production task is that removal is thick Calcium, magnesium and impurity in salt water.In primary brine clarifying process, the salt refining method that now uses be lime mirabilite method and Lime-soda process combines, due to the addition of saltcake, in the calcium ion and saltcake solution that crude brine carries in a settling tank Sulfate ion carries out reversible reaction, when in solution calcium ion and sulfate ion concentration accumulate it is excessive, more than calcium sulfate from When sub- saturation degree, a large amount of calcium sulfate micro-soluble materials are generated, calcium sulfate enters conveyance conduit with primary brine and causes pipeline in order to prevent Encrustation is introduced in a clarification system using suspension as the low concentration lime mud of existence form, and lime mud is by secondary brine It is formed, is delivered to by secondary causticization dredge pump primary clear with the proportional arrangement of about 1:3 with the secondary lime mud after causticization clarification Clear bucket bucket face bypass channel, is laid in each settling tank bucket face with 15 °, 75 °, 135 °, 195 °, 255 °, 315 ° of six directions respectively DN50 pipeline enters at 4 meters of settling tank clear liquid area liquid level or less, and lime mud enters settling tank internal reference by bypass channel in a manner of flowing automatically With react, to reduce the generation of calcium sulfate insoluble matter.But lime mud conveying device in use often there arises a problem that

1) secondary brine and secondary lime mud are according to the proportional arrangement of 1:3 at total amount 20m after low concentration lime mud³/ h is left The right side is delivered to a clarification system by secondary causticization dredge pump, needs mean allocation to 8 clarification barrel cage face bypass channels, Dan Tong Flow 2.5m³/ h or so, since the external gravity line inner fluid speed of bypass channel is too low, and lime mud contains part silt particle, causes Material sedimentation is serious, and pipeline blocks frequent occurrence, and it is uneven in turn result in a settling tank lime mud input, subsequent delivery pipeline Encrustation is serious.

2) there is unstability by from swaging formula conveying lime mud, and cannot accomplishes that monitoring lime mud on-line is added feelings Condition, once pipeline blocks, single barrel of lime mud amount fluctuation causes a settling tank clear liquid area muddy, primary brine turbidity is different Often, secondary refining calcium carbonate product quality is influenced.

3) after the blocking of lime mud pipeline, field monitoring and dredging pipeline is carried out by manpower, causes great manpower object Power waste.

Summary of the invention

A kind of energy is provided based on many reasons, the utility model such as Frequent Accidents, influence product quality and cleaning difficulties Unstable clarification system lime mud additional amount, easy blocking and the difficult automatic batch-type lime mud point of cleaning is effectively relieved Spray feeding device.

The utility model adopts the following technical solution:

A kind of modified automatic batch-type lime mud point spray feeding device, including pipeline, flowmeter, operated pneumatic valve and DCS Controller installs flowmeter and operated pneumatic valve on lime mud main pipe line, is equipped with branched pipe on several directions of main pipe line Line installs electromagnetic valve on each branch line respectively.

Compared with prior art, dosing form of the present invention is more reasonable convenient, can effectively avoid the blocking of pipeline, reduces Post operation personnel labor intensity；Calcium carbonate inside primary brine pipeline caused by fluctuating as single barrel of feeding quantity is alleviated to scab Attachment；Single barrel of lime mud charging more even, primary brine turbidity is substantially reduced, and improves the production of secondary refining calcium carbonate The quality of product.

The utility model uses optimal technical scheme are as follows:

Lime mud main pipe line includes DN80 pipeline and DN32 pipeline, and DN32 pipe installation passes through stream above DN80 pipeline Meter and operated pneumatic valve are connect with DN80 pipeline, and branch line, each branch line are equipped on several directions of DN32 pipeline Using DN25 pipeline.

Branch line quantity is 6, be laid on 15 ° of main pipe line, 75 °, 135 °, 195 °, 255 °, on 315 ° of six directions.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment.

Specific embodiment

The utility model is the operation form and operating status for a secondary clearing lime mud feeding device, one kind of research and development Modified automatic batch-type lime mud point sprays feeding device, eliminates above-mentioned every clarification barrel cage face bypass channel and original tank face Branch line re-lays 1 DN32 general pipeline at 100mm above the DN80 main pipe line, and installs flowmeter and operated pneumatic valve is each One, data on flows, valve position, which are adjusted, introduces DCS controller and production net, adjusts single barrel of lime mud flow by operated pneumatic valve, Accomplish single barrel of flow of real-time monitoring, avoids causing line clogging and subsequent affect caused by can not finding due to burst.? 15 ° of DN32 pipeline, 75 °, 135 °, 195 °, 255 °, 315 ° of six directions be laid with DN25 pipeline respectively, it is each on 6 branch lines One Solenoid ball valve is installed, abrasion-proof structure ceramics are lined with inside electromagnetic valve, valve is limited by Yantai Jin Tai Merrill Lynch science and technology share Company provides, valve model PCCV1-FPKA-16PZZO4-OSRL.Can be effectively relieved makes valve because lime mud impurity washes away With losing for service life, solenoid valve control switch valve position introduces DCS controller, carries out lime mud circulation point automatically according to control program Spray operation, lime mud were fed by 6 uniformly distributed charge lines with every 10 seconds for a frequency segmentation, completed one per minute Secondary complete material spray movement.In each frequency movement, Dan Tong 2.5m³/ h lime mud all passes through a wherein charge pipe and enters clarification At 4 meters of bucket, single-tube fluid flow velocity reaches 1.5m/h, depositional phenomenon caused by material can be avoided to influence as gravity completely.It is whole Machine device ensure that a clarification system lime mud can satisfy low discharge high frequency time and uniformly convey, and it is efficient to make up to zero cleaning Conveying operation.

In conjunction with attached drawing 1, the course of work of the device: secondary refining is illustrated by taking the 5# settling tank in a clarification system as an example Low concentration lime mud is delivered to primary purification 5# by causticization dredge pump delivery main and clarifies at barrel cage face, and lime mud flow passes through 5# Bucket general pipeline manually-operated gate and operated pneumatic valve control 2.5m³/ h or so, flowmeter are installed on 5# barrels of general pipeline, lime mud charging system In operational process, every frequency is all single tube charging, therefore branch pipe flow is general pipeline flow.No. 1 solenoid valve is opened during 1s-10s It opening, remaining solenoid valve is in full off state, and lime mud enters No. 1 settling tank clear liquid area through branch line, during 11s-20s, 2 Number solenoid valve is opened, remaining solenoid valve be in full off state, and lime mud is through branch line into No. 2 settling tank clear liquid areas；According to this Analogize, 6 solenoid valves sequentially enter its settling tank clear liquid area through branch line according to setting program, lime mud in 60s, complete one Secondary complete material spray operation, above-mentioned lime mud charging process are automatically performed in the case where DCS controls program by above-mentioned steps.

Compared with prior art, for the present invention using auto monitoring and measurement circulation point spray feeding device, dosing form is more reasonable It is convenient, the blocking of pipeline can be effectively avoided, post operation personnel labor intensity is reduced；It alleviates since single barrel of feeding quantity fluctuates Caused by calcium carbonate scabs inside primary brine pipeline attachment；Single barrel of lime mud charging more even, primary brine is turbid Degree is substantially reduced, and reduces secondary refining calcium carbonate product product quality problem as caused by the fluctuation of primary brine turbidity.

Claims (3)

1. a kind of modified automatic batch-type lime mud point sprays feeding device, including pipeline, flowmeter, operated pneumatic valve and DCS control Device processed, it is characterised in that: install flowmeter and operated pneumatic valve on lime mud main pipe line, be equipped on several directions of main pipe line point By-pass line installs electromagnetic valve on each branch line respectively.

2. modified automatic batch-type lime mud point according to claim 1 sprays feeding device, it is characterised in that: lime mud Main pipe line includes DN80 pipeline and DN32 pipeline, and DN32 pipe installation passes through flowmeter and operated pneumatic valve above DN80 pipeline It is connect with DN80 pipeline, branch line is laid on the circumferencial direction of DN32 pipeline, each branch line uses DN25 pipeline.

3. modified automatic batch-type lime mud point according to claim 1 sprays feeding device, it is characterised in that: branched pipe Line number amount is 6, be laid on 15 ° of main pipe line, 75 °, 135 °, 195 °, 255 °, on 315 ° of six directions.