CN204307566U - A kind of acid bath blending equipment - Google Patents

Abstract

The utility model relates to an acid bath blending equipment, which comprises a tank body. The upper part of the tank body is provided with a bucket feeder, a zinc sulfate high-level tank and a concentrated sulfuric acid high-level tank, and the lower part of the tank body is provided with an acid outlet pipe. The bucket feeder, the zinc sulfate head tank and the concentrated sulfuric acid head tank are respectively connected to the tank body through pipelines, the tank body is provided with a steam inlet pipe, and the outside of the tank body is provided with a ceramic heating plate along the circumference; Zinc sulfate, sodium sulfate, and sulfuric acid can be flexibly adjusted according to actual needs; the process flow is short, the number of operators is small, and it is easy to maintain; this equipment reduces complex process operations such as evaporation and crystallization in acid stations, and occupies a small area; the temperature of this equipment can achieve Automatic adjustment can ensure the normal operation of the experiment; the biggest advantage of this equipment is that it realizes the continuous addition of the three components, effectively avoiding the concentration fluctuation caused by the previous intermittent addition.

Description

A kind of acid bath preparation equipment

technical field

The utility model relates to equipment used in the chemical fiber industry, in particular to an acid bath mixing equipment.

Background technique

The acid station occupies a very important position in the whole viscose system. It provides the spinning machine with a high transparency and three-component stable acid bath, of which the three components are sulfuric acid, sodium sulfate and zinc sulfate. Only the acid bath is stable and Only when the index is qualified can qualified viscose fiber be produced. In the process of testing new varieties, our spinning is realized in the laboratory, and the acid bath volume is about 400L. Because the development of new varieties requires constant adjustment of concentration and temperature, we cannot directly use the acid bath of a large production line. Use the deployment equipment for deployment by yourself. If the deployment equipment is configured according to the configuration of the large production line, the process will be very long, and there will be a lot of operators, which will cause too much waste. Now there is no dedicated deployment equipment for technical developers to use.

Utility model content

The problem to be solved by the utility model is to provide an acid bath blending equipment with short process flow, few operators and easy maintenance for the above problems.

In order to solve the above problems, the technical solution adopted by the utility model is: an acid bath blending equipment, including a tank body, the upper part of the tank body is provided with a bucket feeder, a zinc sulfate elevated tank and a concentrated sulfuric acid elevated tank, the The lower part of the tank body is provided with an acid outlet pipe, the bucket feeder, the zinc sulfate head tank and the concentrated sulfuric acid head tank are respectively connected to the tank body through pipelines, the tank body is provided with a steam inlet pipe, and the tank body The outside is provided with a ceramic heating plate along the circumference.

This equipment can add sodium sulfate, zinc sulfate and sulfuric acid into the tank through bucket feeder, zinc sulfate high level tank and concentrated sulfuric acid high level tank. Zinc sulfate, sodium sulfate and sulfuric acid can be flexibly adjusted according to actual needs. The process is short and easy to operate. Less personnel, easy to maintain.

As an optimized solution, the number of the ceramic heating plates is two.

As an optimized solution, a return pipe is arranged on the upper part of the tank body.

As an optimized solution, a thermocouple is arranged on the return pipe.

As an optimized solution, a control box is also included, and the ceramic heating plate and the thermocouple are electrically connected to the control box.

As an optimized solution, a stirring shaft is provided in the tank body, a motor is provided on the upper part of the tank body, the motor is connected to the stirring shaft by transmission, and stirring blades are provided on the stirring shaft.

As an optimized solution, the part of the steam inlet pipe located in the tank body is provided with a plurality of through holes.

As an optimized solution, the steam inlet pipe is provided with a valve.

As an optimized solution, an acid discharge pipe is provided at the lower part of the tank body.

The utility model adopts the above technical scheme and has the following advantages:

Zinc sulfate, sodium sulfate, and sulfuric acid can be flexibly adjusted according to actual needs; the process flow is short, the number of operators is small, and it is easy to maintain; this equipment reduces complex process operations such as evaporation and crystallization in acid stations, and occupies a small area; Automatic adjustment can ensure the normal operation of the experiment; the biggest advantage of this equipment is that it realizes the continuous addition of the three components, effectively avoiding the concentration fluctuation caused by the previous intermittent addition.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Description of drawings

Accompanying drawing 1 is the structure diagram of an acid bath preparation equipment in the embodiment of the utility model.

Detailed ways

Embodiment: as shown in accompanying drawing 1, a kind of acid bath deployment equipment comprises tank body 5, and the top of described tank body 5 is provided with bucket feeder 1, zinc sulfate head tank 2 and concentrated sulfuric acid head tank 3, so The bottom of the tank body 5 is provided with an acid discharge pipe 11 and an acid discharge pipe 12, and the acid discharge pipe 11 and the acid discharge pipe 12 are provided with valves, the bucket feeder 1, the zinc sulfate head tank 2 and the concentrated sulfuric acid head tank 3 are respectively connected to the tank body 5 through pipelines, the tank body 5 is provided with a steam inlet pipe 13, and the part of the steam inlet pipe 13 located in the tank body 5 is provided with a plurality of through holes, and the steam inlet pipe 13 A valve 4 is arranged on the top, and a ceramic heating plate 7 is arranged on the outside of the tank body 5 along the circumferential direction.

The number of the ceramic heating plates 7 is two, and the number of the ceramic heating plates 7 can be increased or decreased as required.

A return pipe 10 is arranged on the upper part of the tank body 5 , and a thermocouple 6 is arranged on the return pipe 10 .

A control box 9 is also included, and the ceramic heating plate 7 and the thermocouple 6 are electrically connected to the control box 9 .

A stirring shaft 14 is arranged inside the tank body 5 , and a motor 8 is arranged on the upper part of the tank body 5 , the motor 8 is connected to the stirring shaft 14 by transmission, and the stirring shaft 14 is provided with a stirring blade 15 .

Before spinning on a small test line, we need to prepare the acid bath in advance and heat it up to prepare for spinning. First, we need to prepare the acid bath.

The deployment of the acid bath is carried out in the tank body 5, the tank body 5 is made of stainless steel 904, the wall thickness is 5mm, the diameter is 600mm, and the solvent is 280L. First, use the existing soft water pipe in the small test line to add softened water, and turn on the acid pump Circulate, and stop adding when the amount of soft water added reaches the calibration scale of the glass tube.

Open the valve 4, the steam in the steam inlet pipe 13 heats the soft water in the bucket, and the temperature rises to a specified temperature, such as 65 degrees, and the specific temperature needs to be determined according to the spinning start time and process requirements. The steam inlet pipe 13 is made of PP material, and the surface is covered with small holes with a diameter of 2mm, which can spray a large amount of steam, so that the temperature of the softened water reaches the specified temperature within 0.5h.

After the temperature rise is completed, concentrated sulfuric acid, sodium sulfate, and zinc sulfate are sequentially added through the concentrated sulfuric acid head tank 3, bucket feeder 1 and zinc sulfate head tank 2, and the addition amount of the three is calculated according to the process.

Adding of the concentrated sulfuric acid is realized by the concentrated sulfuric acid head tank 3. Open the valve at the bottom of the concentrated sulfuric acid head tank 3 to allow the concentrated sulfuric acid to slowly flow into the tank body 5. At this time, observe the liquid level on the concentrated sulfuric acid head tank 3 to prevent excess. When adding, the operator should wear a protective mask to prevent sulfuric acid Splash hurts.

The addition of zinc sulfate is realized through the zinc sulfate high tank 2. Since zinc sulfate is easy to absorb water and agglomerate, and the amount added is very small, we need to dissolve zinc sulfate in an acid bath in advance before using it. The source of the dissolved acid bath is a large production line. Equally, also liquid level is arranged above the zinc sulfate head tank 2, can control its addition.

The addition of sodium sulfate cannot be dissolved in advance using an acid bath like the addition of zinc sulfate, because the initial addition of sodium sulfate is large, the volume of the bucket feeder 1 is limited, and the solubility of sodium sulfate is not very high, so we cannot use the solution. We carry out the powder adding operation through the bucket feeder 1, and directly add the Yuanming Powder into the tank body 5, and the surface of the tank body 5 also has a liquid level.

When the three are added, it should be noted that the motor 8 should be turned on after the concentrated sulfuric acid is added, and the speed should be adjusted to 80r/min. The speed of adding sodium sulfate can not be too fast, and the speed of adding will be basically consistent with the speed of acid bath circulation, prevents sodium sulfate from adding too quickly to block the acid pipe 11.

After the initial acid bath is prepared, circulate it for 30 minutes, then observe the display of the control box 9 at this time, adjust the acid temperature again according to actual needs, test the acid concentration within a period of time thereafter, make fine adjustments to make the concentration meet the requirements, and finally cover the tank body 5 The cover plate makes the tank body 5 circulate in a sealed state.

Turn on the ceramic heating plate 7 and the control box 9 to carry out the heat preservation operation. The power of the ceramic electric heating plate 7 is 20kw, and it goes around the tank body 5 for two weeks. The ceramic electric heating plate 7 is intermittently heat-preserved and heated. 10, test the acid back temperature, feed back the signal to the control box 9, the ceramic electric heating plate 7 and the control box 9 form a chain, and control the start and stop of the ceramic electric heating plate 7 through the control box 9.

After the spinning starts, due to the constant changes of the three components, the three components need to be added continuously. At this time, the adjustment amount of concentrated sulfuric acid and zinc sulfate is not judged by the change of liquid level, because the amount to be added is small, and the short-term There is no visible change in the liquid level, and it cannot be measured. At this time, we measure through a stopwatch and a measuring cylinder, and the measurement time is 20s. The instantaneous addition amount of the two at this time can be obtained through the conversion of the formula. The addition amount of sodium sulfate is measured through a stopwatch, a beaker and a balance. Through the formula After conversion, the instantaneous addition amount can also be obtained, and the metering time is 20s.

After spinning, we cannot place the acid bath for a long time, because sodium sulfate is easy to crystallize and block the filter and pipeline, so we need to drain the acid bath through the acid discharge pipe 12.

Claims (9)

1. An acid bath blending equipment, comprising a tank body (5), is characterized in that: the top of the tank body (5) is provided with a bucket feeder (1), a zinc sulfate elevated tank (2) and a concentrated sulfuric acid elevated Slot (3), the bottom of the tank body (5) is provided with an acid outlet pipe (11), and the bucket feeder (1), zinc sulfate elevated tank (2) and concentrated sulfuric acid elevated tank (3) pass through the The pipeline is connected with the tank body (5), the steam inlet pipe (13) is arranged on the tank body (5), and a ceramic heating plate (7) is arranged on the outside of the tank body (5) along the circumferential direction. 2. A kind of acid bath preparation equipment as claimed in claim 1, is characterized in that: the quantity of described ceramic heating plate (7) is two. 3. The acid bath preparation equipment according to claim 1, characterized in that: the upper part of the tank (5) is provided with a return pipe (10). 4. The acid bath preparation equipment according to claim 3, characterized in that: the return pipe (10) is provided with a thermocouple (6). 5. A kind of acid bath preparation equipment as claimed in claim 4, is characterized in that: also comprise control box (9), described ceramic heating plate (7) and thermocouple (6) are electrically connected with control box (9) . 6. A kind of acid bath preparation equipment according to one of claims 1-5, characterized in that: a stirring shaft (14) is arranged in the tank body (5), and the upper part of the tank body (5) A motor (8) is provided, and the motor (8) is in drive connection with the stirring shaft (14), and the stirring blade (15) is arranged on the stirring shaft (14). 7. The acid bath preparation equipment according to any one of claims 1-5, characterized in that: the part of the steam inlet pipe (13) located in the tank body (5) is provided with a plurality of through holes. 8. The acid bath preparation equipment according to any one of claims 1-5, characterized in that: the steam inlet pipe (13) is provided with a valve (4). 9. The acid bath preparation equipment according to any one of claims 1-5, characterized in that: the lower part of the tank (5) is provided with an acid discharge pipe (12).