An energy saving synergist for boiler water treatment

Abstract

The application relates to the technical field of boiler water treatment, and particularly provides an energy-saving synergist for boiler water treatment, which comprises the following components in mass fraction: 10-17% of HEDP, 6-13% of PESA, 8-15% of cyclohexylamine, 0.5-1.1% of carbon fiber filaments, 0.7-1.5% of 3,4-dihydroxyphenethyl alcohol, 0.8-2.2% of sodium lignosulfonate, 13-22% of camellia seed extract and pure water in the rest amount. The energy-saving synergist for boiler water treatment can improve the thermal efficiency of the boiler by scale inhibition and improvement of the heat exchange efficiency in the boiler.

Description

Technical Field

[0001] This application relates to the field of boiler water treatment technology, and in particular to an energy-saving and efficiency-enhancing agent for boiler water treatment. Background Technology

[0002] The use of steam boilers has increased significantly with rapid economic development. As a type of special equipment, steam boilers are high-energy devices that provide steam heat energy. Therefore, improving boiler thermal efficiency is crucial. Boiler thermal efficiency refers to the ratio of the effective heat absorbed by the boiler to the total heat input, i.e., steam heat / input heat. Boilers are steam-generating devices that use water as the heat transfer medium; therefore, the quality of the feed water is a core technology. Improving water quality is a prerequisite for ensuring the safe and stable operation of the boiler and the production of qualified steam.

[0003] Existing boiler water treatment agents do not directly aim at boiler thermal efficiency, nor do they consider the combination of heat conduction and scale inhibition within the boiler. Therefore, it is necessary to develop an energy-saving and efficiency-enhancing agent for boiler water treatment. Summary of the Invention

[0004] To address the above problems, the present invention aims to provide an energy-saving and efficiency-enhancing agent for boiler water treatment, wherein the energy-saving and efficiency-enhancing agent for boiler water treatment has the following composition:

[0005] The mixture contains 10-17% HEDP, 6-13% PESA, 8-15% cyclohexylamine, 0.5-1.1% carbon fiber filaments, 0.7-1.5% 3,4-dihydroxyphenylethanol, 0.8-2.2% sodium lignosulfonate, 13-22% camellia seed extract, and the remainder purified water.

[0006] The preparation method of the camellia seed extract is as follows:

[0007] Camellia seeds were fed into a pulverizer at a rate of 5 kg / h and a rotation speed of 4500 r / min with a fineness of 100 mesh to obtain camellia seed powder. Cellulase, pectinase, and pure water (0.02 times the mass of the camellia seed powder, 0.03 times the mass of the camellia seed powder, and pure water (10 times the mass of the camellia seed powder) were added. The mixture was kept at 47°C for 24 hours and then filtered through a 200-mesh filter to remove residue. The mixture was then concentrated by vacuum evaporation at 85°C and 600 mbar until the mass of the concentrate was 0.1 times that of the original concentrate. 85% ethanol (4 times the mass of the concentrate) was added and the mixture was distilled at 75°C and 800 mbar until no liquid flowed out continuously. The remaining liquid was collected to obtain the camellia seed extract.

[0008] Furthermore, the mass fraction of the HEDP is 13%.

[0009] Furthermore, the mass fraction of the PESA is 10%.

[0010] Furthermore, the mass fraction of the cyclohexylamine is 11%.

[0011] Furthermore, the mass fraction of the carbon fiber filament is 0.8%.

[0012] Furthermore, the mass fraction of the 3,4-dihydroxyphenylethanol is 1.1%.

[0013] Furthermore, the sodium lignosulfonate has a mass fraction of 1.5%.

[0014] Furthermore, the camellia seed extract has a mass fraction of 17%.

[0015] The following benefits may be achieved through this application:

[0016] This application discloses an energy-saving and efficiency-enhancing agent for boiler water treatment, which improves boiler thermal efficiency by inhibiting scale and increasing in-furnace heat exchange efficiency. On one hand, it utilizes HEDP, PESA, and camellia seed extract to synergistically inhibit scale formation and complex metal ions; on the other hand, it employs 3,4-dihydroxyphenylethanol and camellia seed extract for oxygen removal and antioxidant effects, and cyclohexylamine to raise the pH value, thereby reducing scale buildup. This application also incorporates carbon fiber filaments to enhance boiler water thermal conductivity and scrape the furnace wall, improving in-furnace heat exchange efficiency and reducing furnace wall scale buildup. Finally, this application uses a dispersion and stabilization system consisting of sodium lignin sulfonate and tea saponins and cellulose from camellia seed extract, which, after addition, are uniformly dispersed in the mixed boiler water to prevent flocculation or agglomeration. Detailed Implementation

[0017] To more clearly illustrate the overall concept of this application, the overall solution of the present invention will be described in detail below by way of embodiments; in the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention; however, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details; in other instances, some technical features known in the art have not been described in order to avoid confusion with the present invention.

[0018] In this application, the boiler has a volume of 0.5 tons and a maximum pressure of 1.25 MPa. After one test, it is cleaned before the next test. Hydroxyethylidene diphosphonic acid (HEDP) and sodium polyepoxysuccinate (PESA) were purchased from Changzhou Runyang Chemical Co., Ltd., with contents of 50% and 40%, respectively. Cyclohexylamine CAS No.: 108-91-8; carbon fiber filament is Toray T700 carbon fiber filament from Japan, with a linear density of 800 g / km, and the length used in this application is 28 mm; sodium lignosulfonate CAS No.: 8061-51-6; camellia seeds are from Dabie Mountain, with a moisture content of 8% and an oil yield of 23%; the enzyme activities of cellulase and pectinase are both 20,000 U / g.

[0019] Unless otherwise specified, all raw material components in the following examples are commercially available, all experimental instruments used are standard laboratory instruments, and the performance testing methods are those known in the art. The overall operating environment was 25°C and 30% humidity.

[0020] The preferred implementation method is as follows:

[0021] Example 1:

[0022] The following methods were used to prepare an energy-saving and efficiency-enhancing agent for boiler water treatment:

[0023] Preparation of Camellia Seed Extract: Camellia seeds were fed into a pulverizer at a speed of 4500 r / min and a fineness of 100 mesh at a feeding rate of 5 kg / h and pulverized until camellia seed powder was obtained. Cellulase, pectinase, and pure water (0.02 times the mass of the camellia seed powder, 0.03 times the mass of the camellia seed powder, and pure water (10 times the mass of the camellia seed powder) were added. The mixture was kept at 47℃ for 24 h and then filtered through a 200-mesh filter to remove residue. The mixture was then concentrated by vacuum evaporation at 85℃ and 600 mbar until the mass of the concentrate was 0.1 times that before evaporation. 85% ethanol (4 times the mass of the concentrate) was added and the mixture was distilled at 75℃ and 800 mbar until no liquid flowed out continuously. The remaining liquid was collected to obtain the camellia seed extract.

[0024] The energy-saving and efficiency-enhancing agent for boiler water treatment is prepared by mixing 13% HEDP, 10% PESA, 11% cyclohexylamine, 0.8% carbon fiber, 1.1% 3,4-dihydroxyphenylethanol, 1.5% sodium lignosulfonate, 17% camellia seed extract, and the balance being purified water.

[0025] Examples 2 to 15:

[0026] The only difference between Example 2 and Example 1 is that the mass fraction of HEDP is 10%.

[0027] The only difference between Example 3 and Example 1 is that the mass fraction of HEDP is 17%.

[0028] The only difference between Example 4 and Example 1 is that the mass fraction of PESA is 6%.

[0029] The only difference between Example 5 and Example 1 is that the mass fraction of PESA is 13%.

[0030] The only difference between Example 6 and Example 1 is that the mass fraction of cyclohexylamine is 8%.

[0031] The only difference between Example 7 and Example 1 is that the mass fraction of cyclohexylamine is 15%.

[0032] The only difference between Example 8 and Example 1 is that the mass fraction of carbon fiber filament is 0.5%.

[0033] The only difference between Example 9 and Example 1 is that the mass fraction of carbon fiber filament is 1.1%.

[0034] The only difference between Example 10 and Example 1 is that the mass fraction of 3,4-dihydroxyphenylethanol is 0.7%.

[0035] The only difference between Example 11 and Example 1 is that the mass fraction of 3,4-dihydroxyphenylethanol is 1.5%;

[0036] The only difference between Example 12 and Example 1 is that the mass fraction of sodium lignosulfonate is 0.8%.

[0037] The only difference between Example 13 and Example 1 is that the mass fraction of sodium lignosulfonate is 2.2%.

[0038] The only difference between Example 14 and Example 1 is that the camellia seed extract has a mass fraction of 13%.

[0039] The only difference between Example 15 and Example 1 is that the mass fraction of the camellia seed extract is 22%.

[0040] Comparative Examples 1 to 25:

[0041] The only difference between Comparative Example 1 and Example 1 is that the mass fraction of HEDP is 5%;

[0042] The only difference between Comparative Example 2 and Example 1 is that the mass fraction of HEDP is 30%.

[0043] The only difference between Comparative Example 3 and Example 1 is that the mass fraction of PESA is 3%;

[0044] The only difference between Comparative Example 4 and Example 1 is that the mass fraction of PESA is 25%.

[0045] The only difference between Comparative Example 5 and Example 1 is that the mass fraction of cyclohexylamine is 4%;

[0046] The only difference between Comparative Example 6 and Example 1 is that the mass fraction of cyclohexylamine is 30%.

[0047] The only difference between Comparative Example 7 and Example 1 is that the mass fraction of carbon fiber filament is 0.1%.

[0048] The only difference between Comparative Example 8 and Example 1 is that the mass fraction of carbon fiber filament is 3%.

[0049] The only difference between Comparative Example 9 and Example 1 is that the mass fraction of 3,4-dihydroxyphenylethanol is 0.2%;

[0050] The only difference between Comparative Example 10 and Example 1 is that the mass fraction of 3,4-dihydroxyphenylethanol is 4%;

[0051] The only difference between Comparative Example 11 and Example 1 is that the mass fraction of sodium lignosulfonate is 0.3%.

[0052] The only difference between Comparative Example 12 and Example 1 is that the mass fraction of sodium lignosulfonate is 5%;

[0053] The only difference between Comparative Example 13 and Example 1 is that the camellia seed extract has a mass fraction of 6%.

[0054] The only difference between Comparative Example 14 and Example 1 is that the camellia seed extract has a mass fraction of 40%.

[0055] The only difference between Comparative Example 15 and Example 1 is that the camellia seed extract was prepared by incubation at 70°C for 24 hours.

[0056] The only difference between Comparative Example 16 and Example 1 is that in the preparation method of Camellia seed extract, 85% ethanol with a mass of 4 times that of the concentrate is added and the mixture is distilled under reduced pressure at 90°C and a vacuum of 800 mbar until no liquid flows out continuously.

[0057] The only difference between Comparative Example 17 and Example 1 is that the cellulase and pectinase in the preparation method of camellia seed extract are replaced with an equal mass of pure water.

[0058] The only difference between Comparative Example 18 and Example 1 is that the cellulase in the preparation method of camellia seed extract is replaced with an equal mass of pectinase.

[0059] The only difference between Comparative Example 19 and Example 1 is that HEDP was replaced with PESA and camellia seed extract in the same mass ratio as in Example 1.

[0060] The only difference between Comparative Example 20 and Example 1 is that PESA was replaced with HEDP and camellia seed extract in the same mass ratio as in Example 1.

[0061] The only difference between Comparative Example 21 and Example 1 is that the camellia seed extract was replaced with HEDP and PESA in the same mass ratio as in Example 1.

[0062] The only difference between Comparative Example 22 and Example 1 is that 3,4-dihydroxyphenylethanol was replaced with an equal mass of camellia seed extract.

[0063] The only difference between Comparative Example 23 and Example 1 is that the camellia seed extract was replaced with an equal mass of 3,4-dihydroxyphenylethanol.

[0064] The only difference between Comparative Example 24 and Example 1 is that sodium lignin sulfonate was replaced with an equal mass of camellia seed extract.

[0065] The only difference between Comparative Example 25 and Example 1 is that the camellia seed extract was replaced with an equal mass of sodium lignin sulfonate.

[0066] Blank group: The blank group does not contain the energy-saving and efficiency-enhancing agent used for boiler water treatment and runs directly.

[0067] Prepared boiler cycles for example, each cycle repeated 3 times, and the average value was taken. The specific operation was as follows: 20℃ water was injected at 0.7 times the volume of the boiler's highest water level, and 0.3 times the mass of the energy-saving agent for boiler water treatment was added. The operating pipeline was a 15m long insulated output steam pipeline. The steam was transferred to a water-cooled condenser with a capacity of 15 tons of 0℃ cold water, condensed to 20℃, and then returned to the boiler via a 15m long condensate return pipeline. In each example cycle, the water-cooled condenser water temperature was measured after 1 hour of uniform and complete combustion of 980MJ natural gas at the bottom. The boiler thermal efficiency was calculated as the energy-saving effect, expressed as a percentage (%), rounded to two decimal places. Boiler thermal efficiency = (steam heat / input heat) × 100% = [heat increased by the water-cooled condenser / (gas heat - boiler heat increase)] × 100%, with the heat formula Q = m × c × ΔT. The experimental results are shown in Table 1.

[0068] Table 1: Test results of energy saving and efficiency improvement effects for each example

[0069]

[0070] As can be seen from the data in Table 1, compared with other examples, the boiler thermal efficiency of the embodiments of this application, especially the solution of Embodiment 1 of this application, is higher; that is, the energy-saving and efficiency-enhancing agent for boiler water treatment of the embodiments of this application, especially Embodiment 1 of this application, can achieve better energy-saving and efficiency-enhancing effects.

[0071] The above description is merely an embodiment of this application and is not intended to limit this application; various modifications and variations can be made to this application by those skilled in the art; any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. An energy-saving and efficiency-enhancing agent for boiler water treatment, characterized in that, The energy-saving and efficiency-enhancing agent for boiler water treatment has the following composition: 13% HEDP, 10% PESA, 11% cyclohexylamine, 0.8% carbon fiber filaments, 1.1% 3,4-dihydroxyphenylethanol, 1.5% sodium lignosulfonate, 17% camellia seed extract, and the remainder purified water. The preparation method of the camellia seed extract is as follows: Camellia seeds were fed into a pulverizer at a rate of 5 kg / h and a rotation speed of 4500 r / min with a fineness of 100 mesh to obtain camellia seed powder. Cellulase, pectinase, and pure water (0.02 times the mass of the camellia seed powder, 0.03 times the mass of the camellia seed powder, and 10 times the mass of the camellia seed powder) were added. The mixture was kept at 47°C for 24 hours and then filtered through a 200-mesh filter to remove residue. The mixture was then concentrated by vacuum evaporation at 85°C and 600 mbar until the mass of the concentrate was 0.1 times that of the concentrate. 85% ethanol (4 times the mass of the concentrate) was added, and the mixture was distilled at 75°C and 800 mbar until no liquid flowed out continuously. The remaining liquid was collected to obtain the camellia seed extract.

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