A polymerized environmentally friendly desulfurizer and its preparation method

Abstract

The present invention discloses a polymerized environmentally friendly desulfurizer and a method for preparing the same, and relates to the technical field of environmentally friendly desulfurization. The desulfurizer of the present invention can improve the desulfurization efficiency, and the catalyst in the desulfurizer can accelerate the reaction of SO2 and the absorbent, increase the reaction rate, and thus significantly improve the desulfurization efficiency. Through the action of the catalyst, the desulfurization process is more efficient, and harmful gases such as sulfur dioxide in the flue gas can be effectively removed in a relatively short time, reducing the emission of pollutants, and improving the polymerization reaction performance. The introduction of the polymerization reaction material helps to convert low molecular weight substances into high molecular weight polymers, and these polymers have excellent fiber-forming and film-forming properties. Compared with traditional desulfurizers, this polymer enhances the plasticity and stability of the desulfurizer, can better maintain its performance in high temperature and complex environments, and prolongs the service life of the desulfurizer.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly desulfurization, in particular to a polymeric environmentally friendly desulfurization agent and a preparation method thereof. Background Art

[0002] With the rapid development of economy, the world's demand for energy industry, especially coal, has also grown rapidly. The energy route of industrialized countries, which is mainly based on mineral fuels such as oil and coal, is a basic trend and feature of the current world energy development. However, China is one of the few countries in the world that uses coal as its main energy source. In the industrial energy structure of our country, coal occupies an absolute dominant position. The burning of a large amount of coal generates a large amount of SO2, which is the main air pollutant and one of the two main culprits of acid rain. The losses caused by acid rain are more than 10 billion yuan each year. Therefore, the control and management of SO2 emissions cannot be delayed.

[0003] In order to control SO2 emissions, many existing technologies have proposed the use of desulfurizers as agents in various industrial links to achieve better emission standards. However, existing desulfurizers have shortcomings in terms of convenience of preparation, environmental protection during use, and function.

[0004] Therefore, a new solution to the above problems needs to be proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a polymeric environmentally friendly desulfurizing agent and a preparation method thereof to solve the technical problems raised in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a polymerized environmentally friendly desulfurizer, comprising a reducing agent, a catalyst, a polymerization reaction material, urea, ammonia water and water.

[0007] Furthermore, the reducing agent has a component of 3.5%-6%, the catalyst has a component of 3%-5%, the polymerization material has a component of 5%-8%, the urea has a component of 15%-20%, the ammonia water has a component of 8%-12%, and the water has a component of 55%-67.5%.

[0008] A method for preparing a polymeric environmentally friendly desulfurizer comprises at least the following steps:

[0009] S1: Weigh the reducing agent, catalyst, polymerization reaction material and water according to weight percentage;

[0010] S2: Add a portion of reducing agent into the reactor and heat it to a certain temperature;

[0011] S3: adding a portion of the catalyst to the reactor, dropping the polymerization reaction material, continuing to heat up to the reaction temperature and keeping the temperature, obtaining a high molecular polymer, and adding ammonia water to adjust the pH;

[0012] S4: adding water and the remaining catalyst to the high molecular polymer and stirring the mixture, and adding urea to stabilize the reaction system and improve the desulfurization effect, thereby obtaining a high molecular environmentally friendly desulfurization agent base liquid;

[0013] S5: adding the remaining reducing agent to the polymer environmentally friendly desulfurizing agent base liquid and stirring the mixture to obtain a finished polymer environmentally friendly polymer desulfurizing agent.

[0014] Furthermore, the reducing agent added to the reactor in S2 accounts for 50%-70% of the total reducing agent, and the heating temperature is 40°C to 80°C.

[0015] Furthermore, the catalyst added to the reactor in S3 accounts for 20%-40% of the total catalyst to ensure sufficient catalytic activity of the initial reaction. The polymerization reaction material in S3 is added dropwise into the reactor at a rate of 1-5 mL / min to ensure uniformity of the reaction. The heating rate in S3 should be controlled between 1°C / min and 3°C / min to avoid side reactions caused by excessive heating. The reaction temperature in S3 is 100°C to 150°C and needs to be kept warm for 1-3 hours.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The desulfurizer of the present invention can improve the desulfurization efficiency. The catalyst in the desulfurizer can accelerate the reaction between SO2 and the absorbent, increase the reaction rate, and thus significantly improve the desulfurization efficiency. Through the action of the catalyst, the desulfurization process is more efficient, and harmful gases such as sulfur dioxide in the flue gas can be effectively removed in a shorter time, reducing the emission of pollutants.

[0018] 2. The desulfurizer of the present invention can improve the polymerization reaction performance. The introduction of the polymerization reaction material helps to convert low molecular weight substances into high molecular weight polymers, which have excellent fiber-forming and film-forming properties. Compared with traditional desulfurizers, this polymer enhances the plasticity and stability of the desulfurizer, can better maintain its performance in high temperature and complex environments, and prolong the service life of the desulfurizer.

[0019] 3. The desulfurizer of the present invention can optimize the reduction reaction performance. The reducing agent in the desulfurizer can effectively reduce the valence state of the oxide and provide electrons to the oxidant, thereby promoting the redox reaction. Through the reduction reaction, the desulfurizer can further reduce harmful gases (such as SO2) in the flue gas, ensuring the thoroughness and efficiency of the desulfurization process.

[0020] 4. The desulfurizer of the present invention can improve the sulfur separation efficiency and anti-clogging ability. The addition of urea has good adaptability to different raw gas (such as coke furnace gas, natural gas, etc.), can effectively promote the separation and removal of sulfur, and also plays an important role in preventing sulfur accumulation and clogging equipment. Especially under complex gas sources, the effect of urea enables the desulfurizer to maintain good effects in a variety of environments, avoiding the risk of equipment damage and production stagnation.

[0021] 5. The desulfurizer of the present invention can effectively utilize ammonia water for alkaline desulfurization. Ammonia water, as an important component of the desulfurizer, can react with SO2 to generate amino acid ammonium salts, and perform efficient desulfurization under alkaline conditions. This process can not only effectively absorb and convert SO2, but also reduce secondary pollution of sulfides and optimize the environmental protection of the desulfurization process.

[0022] 6. The desulfurizer of the present invention is both environmentally friendly and economically beneficial. The desulfurizer technology integrates multiple reaction mechanisms (catalysis, reduction, polymerization, etc.), improves the desulfurization efficiency and equipment stability, and reduces the operating cost and maintenance cost of the equipment. At the same time, by reducing harmful gas emissions and complying with environmental protection regulations, it helps companies reduce environmental pressure and possible penalties, and has high economic and social benefits.

[0023] 7. The desulfurizer of the present invention also has an absorption effect on NOX. In addition, the ammonium sulfite formed during the desulfurization process also has a reducing effect on NOX, so it can also assist in removing NOX while desulfurizing. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Embodiment 1:

[0026] A polymerized environmentally friendly desulfurizing agent comprises a reducing agent, a catalyst, a polymerization reaction material, urea, ammonia water and water.

[0027] The reducing agent has a component of 3.5%-6%, the catalyst has a component of 3%-5%, the polymerization material has a component of 5%-8%, the urea has a component of 15%-20%, the ammonia water has a component of 8%-12%, and the water has a component of 55%-67.5%.

[0028] The catalyst in the desulfurizer is a substance that can change the rate of chemical reactions but does not participate in the final product of the reaction. The desulfurization catalyst improves the desulfurization efficiency and reduces pollutant emissions through the chemical reaction between So2 and the absorbent.

[0029] The polymerization reaction material in the desulfurizer brings about the polymerization reaction, which refers to the process of converting low molecular weight units into high molecular weight polymers. The polymer has the properties of being plastic, fiber-forming, and film-forming, which are not possessed by low molecular weight monomers.

[0030] The reducing agent in the desulfurizer loses electrons and its valence increases in the redox reaction. The reducing agent donates electrons to the oxidant, causing it to obtain electrons and undergo a reduction reaction. The reducing agent itself is oxidized and loses electrons to become an oxidation product. The main function of the reducing agent is to reduce the valence of the oxide and provide electrons to its anions.

[0031] Urea in the desulfurizer has good effects on desulfurization efficiency and anti-blocking of sulfur separation equipment, and solves worries for subsequent equipment design and manufacturing.

[0032] The ammonia desulfurization in the desulfurizer is based on the alkaline desulfurization agent (the process of ammonia and acidic S02 reacting to form ammonium bridging acid mainly includes two steps: absorption and oxidation.

[0033] Embodiment 2:

[0034] Based on the above embodiments, this embodiment further proposes a method for configuring a polymerized environmentally friendly desulfurizer;

[0035] A method for preparing a polymeric environmentally friendly desulfurizer comprises at least the following steps:

[0036] S1: Weigh the reducing agent, catalyst, polymerization reaction material and water according to weight percentage;

[0037] S2: Add a reducing agent into the reactor and heat it to a certain temperature;

[0038] S3: Add a catalyst to the reactor, and dropwise add the polymerization reaction material, continue to heat up to the reaction temperature and keep the temperature, to obtain a high molecular polymer;

[0039] S4: adding water and the remaining catalyst to the high molecular polymer and stirring to obtain a high molecular environmentally friendly desulfurization agent base liquid;

[0040] S5: adding the remaining reducing agent to the polymer environmentally friendly desulfurizing agent base liquid and stirring the mixture to obtain a finished polymer environmentally friendly polymer desulfurizing agent.

[0041] The reducing agent added to the reactor in S2 accounts for 50%-70% of the total reducing agent, and the heating temperature is 40°C to 80°C.

[0042] The catalyst added to the reactor in S3 accounts for 20%-40% of the total catalyst to ensure sufficient catalytic activity in the initial reaction. The polymerization reaction material is added dropwise into the reactor at a rate of 1-5 mL / min in S3 to ensure uniformity of the reaction. The heating rate in S3 should be controlled between 1°C / min and 3°C / min to avoid side reactions caused by excessive heating. The reaction temperature in S3 is 100°C to 150°C and needs to be kept warm for 1-3 hours.

[0043] Embodiment three:

[0044] This embodiment proposes a method for applying a polymerized environmentally friendly desulfurizer based on the above two embodiments:

[0045] The desulfurization agent is transported into the factory by a liquid tank truck and directly pumped into the desulfurization agent storage tank by a centrifugal pump. Spray guns are evenly distributed in the flue of the chimney equipment. The spray system adopts a double-fluid internal mixing spray gun to atomize the desulfurization agent into fine droplets with an average particle size of tens of microns, ensuring the coverage of the spray, thereby increasing the contact rate between the desulfurization agent and the gas, accelerating the reaction speed, improving the reaction efficiency, and shortening the reaction time.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A polymeric environmentally friendly desulfurizer, characterized in that: It includes reducing agent, catalyst, polymerization reaction material, urea, ammonia water and water.

2. A polymeric environmentally friendly desulfurizing agent according to claim 1, characterized in that: The reducing agent comprises 3.5%-6%, the catalyst comprises 3%-5%, the polymerization material comprises 5%-8%, the urea comprises 15%-20%, the ammonia water comprises 8%-12%, and the water comprises 55%-67.5%.

3. A method for preparing a polymeric environmentally friendly desulfurizer, used for a polymeric environmentally friendly desulfurizer as claimed in any one of claims 1 to 2, characterized in that: At least the following steps are included: S1: Weigh the reducing agent, catalyst, polymerization reaction material and water according to weight percentage; S2: Add a portion of reducing agent into the reactor and heat it to a certain temperature; S3: adding a portion of the catalyst to the reactor, dropping the polymerization reaction material, continuing to heat up to the reaction temperature and keeping the temperature, obtaining a high molecular polymer, and adding ammonia water to adjust the pH; S4: adding water and the remaining catalyst to the high molecular polymer and stirring the mixture, and adding urea to stabilize the reaction system and improve the desulfurization effect, thereby obtaining a high molecular environmentally friendly desulfurization agent base liquid; S5: adding the remaining reducing agent to the polymer environmentally friendly desulfurizing agent base liquid and stirring the mixture to obtain a finished polymer environmentally friendly polymer desulfurizing agent.

4. The method for preparing a polymeric environmentally friendly desulfurizing agent according to claim 3, characterized in that: The reducing agent added to the reactor in S2 accounts for 50%-70% of the total reducing agent, and the heating temperature is 40°C to 80°C.

5. The method for preparing a polymeric environmentally friendly desulfurizing agent according to claim 3, characterized in that: The catalyst added to the reactor in S3 accounts for 20%-40% of the total catalyst to ensure sufficient catalytic activity of the initial reaction. The polymerization reaction material in S3 is added dropwise into the reactor at a rate of 1-5 mL / min to ensure uniformity of the reaction. The heating rate in S3 should be controlled between 1°C / min and 3°C / min to avoid side reactions caused by excessive heating. The reaction temperature in S3 is 100°C to 150°C and needs to be kept warm for 1-3 hours.