阅读说明：本技术 一种可提高抄纸质量的消泡剂及其制备方法和制备装置 (Defoaming agent capable of improving papermaking quality and preparation method and preparation device thereof ) 是由 凌坤华 范阳海 凌功明 郭秀萍 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种可提高抄纸质量的消泡剂及其制备方法和制备装置,属于抄纸技术领域。一种可提高抄纸质量的消泡剂,其特征在于,其组分主要包括改性组合物、大豆油、催化剂和三乙醇胺；制作所述改性组合物的组分主要包括聚醚、聚硅氧烷和偶联剂；本发明制得的消泡剂可以在污水系统中分解成无害的成分,不会造成水系统的污染,特别适用于造纸的白水系统和排水系统,经过对原料聚醚进行改性后再次进行生产,成品的性能不受温度或者纸机速度影响,耐酸碱性好,易分散到泡沫介质中和水介质体系中,不含有害成分,有利于白水排放。(The invention discloses a defoaming agent capable of improving papermaking quality and a preparation method and a preparation device thereof, belonging to the technical field of papermaking. The defoaming agent capable of improving papermaking quality is characterized by mainly comprising a modified composition, soybean oil, a catalyst and triethanolamine; the components for preparing the modified composition mainly comprise polyether, polysiloxane and a coupling agent; the defoaming agent prepared by the invention can be decomposed into harmless components in a sewage system, cannot cause pollution of a water system, is particularly suitable for a white water system and a drainage system for papermaking, is produced again after raw material polyether is modified, has good acid and alkali resistance, is easy to disperse into a foam medium and a water medium system, does not contain harmful components, and is beneficial to white water discharge.)

1. The defoaming agent capable of improving papermaking quality is characterized by comprising the following components: modified composition, soybean oil, catalyst, triethanolamine;

the components are composed according to the following proportion:

75% -90% of a modified composition;

10% -15% of soybean oil;

0.8% -1.2% of catalyst;

1.5 to 2.4 percent of triethanolamine;

the modified composition is composed of the following components: a polyether, a polysiloxane and a coupling agent;

the components are composed according to the following proportion:

80% -90% of polyether;

10% -20% of polysiloxane;

0.1 to 0.3 percent of coupling agent.

2. The device for preparing the defoaming agent capable of improving papermaking quality according to claim 1 comprises an outer tank body (1) and an inner tank body (2), and is characterized in that a base (201) is arranged inside the outer tank body (1), the inner tank body (2) is arranged on the base (201), a heating pipe (3) is connected to the outer wall of the inner tank body (2), a temperature sensor (205) is further arranged inside the inner tank body (2), through holes are drilled in the outer walls of the outer tank body (1) and the inner tank body (2), a feeding pipe (102) corresponding to the through holes is connected to the top of the outer tank body (1), a nitrogen inlet pipe (203) is connected to the top of the inner tank body (2), one end, far away from the inner tank body (2), of the nitrogen inlet pipe (203 penetrates through the outer tank body (1) and extends outwards, a discharging pipe (202) is connected to the bottom of the inner tank body (2), one end, far away from the inner tank body (2), of the discharge pipe (202) penetrates through the outer tank body (1) and extends outwards.

3. The device for preparing the defoaming agent for improving the papermaking quality according to claim 2, characterized in that the heating pipe (3) is spirally wound on the outer wall of the inner tank (2).

4. The device for preparing the antifoaming agent capable of improving papermaking quality according to claim 2, characterized in that the discharge pipe (202) and the nitrogen inlet pipe (203) are provided with control valves (204), and the top of the feed pipe (102) is connected with a cover plate (103).

5. The device for preparing the defoaming agent for improving the papermaking quality according to the claim 4 is characterized in that a servo motor (4) is connected to the outer wall of the top of the outer tank body (1), a rotating shaft (401) is connected to the output end of the servo motor (4), one end, away from the servo motor (4), of the rotating shaft (401) penetrates through the outer tank body (1) and the inner tank body (2) and extends inwards, and a stirring part (402) is connected to the bottom of the rotating shaft (401).

6. The device for preparing the defoaming agent capable of improving papermaking quality according to the claim 5 is characterized in that the bottom of the outer tank body (1) is connected with a supporting leg (101).

7. A process for producing a defoaming agent for improving papermaking quality, which comprises the apparatus for producing a defoaming agent for improving papermaking quality according to any one of claims 2 to 6, characterized by comprising the steps of:

s1, adding polyether and polysiloxane into the inner tank body (2), and heating to 120 ℃;

s2, adding a coupling agent, continuously heating to 150 ℃, and introducing nitrogen for protection;

s3, controlling the temperature of the inner tank body (2) to be 155 ℃, preserving the heat for 10 hours, and discharging the water in the inner tank body (2) through a control valve (204) on a discharge pipe (202);

s4, cooling to 80 ℃, packaging and discharging to naturally cool the mixture to obtain the modified composition;

s5, adding the modified composition into the inner tank body (2), and heating to 80 ℃;

s6, adding soybean oil, stirring uniformly, continuing to heat, and introducing nitrogen for protection;

s7, heating to 80 ℃, adding a catalyst, heating, controlling the temperature in the inner tank body (2) to be 155 ℃, keeping the temperature for 12 hours, and cooling to 120 ℃ when the pH value is 5;

s8, adding triethanolamine, stirring uniformly, and reacting for 1 hour at 120-100 ℃;

s9, packaging and discharging at the temperature of 80 ℃, and naturally cooling to obtain the defoaming agent.

Technical Field

The invention relates to the technical field of defoaming agents, in particular to a defoaming agent capable of improving papermaking quality and a preparation method and a preparation device thereof.

Background

Papermaking, namely, a technological process for making paper from paper pulp, which is continuously carried out on a paper machine in the modern papermaking industry, namely, the paper pulp suitable for the paper quality is diluted to a certain concentration by water, and is primarily dewatered at a net part of the paper machine to form wet paper sheets, and then the wet paper sheets are pressed, dewatered and dried to prepare the paper sheets; in the prior art, the paper pulp overflow is controlled and the paper making quality is improved aiming at the foaming characteristic of the paper making process, but the defects exist at present that the acid and alkali resistance degree is not enough, the defoaming performance is influenced by the temperature and the running speed of a paper machine, the dispersity is not ideal, and part of substances of products influence the environmental protection emission.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a defoaming agent capable of improving papermaking quality, a preparation method and a preparation device thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

the defoaming agent capable of improving papermaking quality is characterized by mainly comprising a modified composition, soybean oil, a catalyst and triethanolamine;

the components are composed according to the following proportion:

75% -90% of a modified composition;

10% -15% of soybean oil;

0.8% -1.2% of catalyst;

1.5 to 2.4 percent of triethanolamine;

the components for preparing the modified composition mainly comprise polyether, polysiloxane and a coupling agent;

the components are composed according to the following proportion:

80% -90% of polyether;

10% -20% of polysiloxane;

0.1 to 0.3 percent of coupling agent.

The utility model provides a device for preparing can improve defoaming agent of quality of copying, includes the outer jar of body and the inner tank body, its characterized in that, the inner wall of the outer jar of body is equipped with the base, the inner tank body sets up between the outer wall of base and the top inner wall of the outer jar of body, the outer wall connection of the inner tank body has the heating pipe, the inner wall of the inner tank body still is connected with temperature sensor, the outer wall of the outer jar of body and the inner tank body is all dug there is the through-hole, the top outer wall connection of the outer jar of body has the inlet pipe corresponding with the through-hole, the top outer wall connection of the inner tank body has the nitrogen gas admission pipe, the one end that the inner tank body was kept away from to the nitrogen gas admission pipe passes the outer jar of body and outwards extends, the bottom outer.

Preferably, the heating pipe is spirally wound on the outer wall of the inner tank body.

Preferably, all be equipped with the control valve on discharging pipe and the nitrogen gas admission pipe, the top of inlet pipe is connected with the apron.

Preferably, the top outer wall of the outer tank body is connected with a servo motor, the output end of the servo motor is connected with a rotating shaft, one end, far away from the servo motor, of the rotating shaft penetrates through the outer tank body and the inner tank body and extends inwards, and the bottom of the rotating shaft is connected with a stirring part.

Preferably, the bottom of the outer tank body is connected with a supporting leg.

A preparation method of a defoaming agent capable of improving papermaking quality comprises the following steps:

s1, adding polyether and polysiloxane into the inner tank body, and heating to 120 ℃;

s2, adding a coupling agent, continuously heating to 150 ℃, and introducing nitrogen for protection;

s3, controlling the temperature of the inner tank body to be 155 ℃, preserving the heat for 10 hours, and discharging the water in the inner tank body through a control valve on the discharge pipe;

s4, cooling to 80 ℃, packaging and discharging to naturally cool the mixture to obtain the modified composition;

s5, adding the modified composition into an inner tank body, and heating to 80 ℃;

s6, adding soybean oil, stirring uniformly, continuing to heat, and introducing nitrogen for protection;

s7, heating to 80 ℃, adding a catalyst, heating, controlling the temperature in the inner tank body to be 155 ℃, keeping the temperature for 12 hours, and cooling to 120 ℃ when the acid value is 5;

s8, adding triethanolamine, stirring uniformly, and reacting for 1 hour at 120-100 ℃;

s9, packaging and discharging at the temperature of 80 ℃, and naturally cooling to obtain the defoaming agent.

Compared with the prior art, the invention provides the preparation method of the defoaming agent for improving the papermaking quality, and the preparation method has the following beneficial effects:

the preparation method of the defoaming agent for improving papermaking quality comprises the steps of firstly taking polyether and polysiloxane in a certain proportion, putting the polyether and the polysiloxane into an inner tank body from a feeding pipe, controlling the heating pipe to work through a control panel on the side wall of an outer tank body, raising the temperature in the inner tank body to 120 ℃, feeding back a signal by a temperature sensor to enable the temperature rise to be more accurate, then adding a coupling agent through the feeding pipe, opening a control valve on a nitrogen inlet pipe, introducing nitrogen into the inner tank body for protection, then controlling the temperature in the inner tank body to be kept at 150 ℃, keeping the temperature for 10 hours, discharging water through a control valve on a discharging pipe during the period, packaging and discharging after the temperature is reduced to 80 ℃, naturally cooling the discharged material, and preparing a modified composition, namely modified polyether, adding the modified composition in a certain proportion into the inner tank body, raising the temperature to 80 ℃, then adding soybean oil, starting a servo motor to drive a stirring part to rotate, stirring the mixture evenly, continuing to heat the mixture, introducing nitrogen into a nitrogen inlet pipe for protection, adding a catalyst after the mixture is heated to 80 ℃, then controlling the temperature in an inner tank body to be 155 ℃, preserving the heat for 12 hours, cooling the mixture to 120 ℃ when the acid value is 5, adding triethanolamine, stirring the mixture evenly by a stirring part, reacting the mixture for 1 hour at the temperature of between 120 and 100 ℃, packaging and discharging the mixture when the temperature is reduced to 80 ℃, and naturally cooling the mixture to obtain the defoaming agent capable of preventing paper pulp from overflowing and paper making quality.

The defoaming agent prepared by the invention can be decomposed into harmless components in a sewage system, cannot cause pollution to a water system, is particularly suitable for a white water system and a drainage system for papermaking, is produced again after raw material polyether is modified, has the advantages of no influence of temperature or paper machine speed on the performance of a finished product, good acid and alkali resistance, easy dispersion in a foam medium and a water medium system, no harmful components and contribution to white water discharge.

Drawings

FIG. 1 is a schematic structural diagram I of an apparatus for preparing a defoaming agent capable of improving papermaking quality according to the present invention;

FIG. 2 is a schematic structural diagram II of an apparatus for preparing a defoaming agent capable of improving papermaking quality according to the present invention;

FIG. 3 is a schematic structural diagram of the inside of an apparatus for preparing a defoaming agent capable of improving papermaking quality according to the present invention;

FIG. 4 is a schematic structural diagram of an inner tank body of the device for preparing the defoaming agent capable of improving papermaking quality.

In the figure: 1. an outer tank body; 101. supporting legs; 102. a feed pipe; 103. a cover plate; 2. an inner tank body; 201. a base; 202. a discharge pipe; 203. a nitrogen inlet pipe; 204. a control valve; 205. a temperature sensor; 3. heating a tube; 4. a servo motor; 401. a rotating shaft; 402. and a stirring part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and 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.