Energy-saving synergist for boiler water treatment

Abstract

The invention relates to the technical field of boiler water treatment, and particularly provides an energy-saving synergist for boiler water treatment, which is prepared from the following components in percentage by mass: 10 to 17 percent of HEDP, 6 to 13 percent of PESA, 8 to 15 percent of cyclohexylamine, 0.5 to 1.1 percent of carbon fiber yarn, 0.7 to 1.5 percent of 3, 3 '-diphenyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5 The cleaning agent is prepared from the following components in percentage by mass: 2-4% of 2, 4-dihydroxyphenethyl alcohol, 0.8-2.2% of sodium lignin sulfonate, 13-22% of camellia seed extract and the balance of pure water. According to the energy-saving synergist for boiler water treatment, the heat efficiency of a boiler is improved by inhibiting scales and improving the heat exchange efficiency in the boiler.

Description

Technical Field

[0001] This application relates to the technical field of boiler water treatment, and particularly to an energy-saving and efficiency-enhancing agent for boiler water treatment. Background Art

[0002] With the rapid development of economic construction, the use of steam boilers is increasing. As a special equipment, a steam boiler is a high-energy device that provides steam thermal energy. Therefore, it is very important to improve the thermal efficiency of the boiler. The thermal efficiency of the boiler refers to the ratio of the effective heat absorbed by the boiler to the total heat input, that is, steam heat / input heat. A boiler is a steam generating device that uses water as a heat transfer medium. Therefore, the quality of the feed water is the core technology. Improving the water quality is a prerequisite for ensuring the safe and stable operation of the boiler and producing qualified steam.

[0003] The existing boiler water treatment agents do not directly aim at the boiler thermal efficiency on the one hand, and do not consider the combination of heat conduction and scale inhibition in the boiler on the other hand. Therefore, it is necessary to develop an energy-saving and efficiency-enhancing agent for boiler water treatment. Summary of the Invention

[0004] In order to solve the above problems, the object of the present invention is to provide an energy-saving and efficiency-enhancing agent for boiler water treatment. The composition of the energy-saving and efficiency-enhancing agent for boiler water treatment is as follows: HEDP with a mass fraction of 10 - 17%, PESA with a mass fraction of 6 - 13%, cyclohexylamine with a mass fraction of 8 - 15%, carbon fiber filaments with a mass fraction of 0.5 - 1.1%, 3,4-dihydroxyphenethyl alcohol with a mass fraction of 0.7 - 1.5%, sodium lignosulfonate with a mass fraction of 0.8 - 2.2%, camellia seed extract with a mass fraction of 13 - 22%, and the balance being pure water; The preparation method of the camellia seed extract is as follows: Add camellia seeds to a crusher with a feeding speed of 5 kg / h, a rotation speed of 4500 r / min, and a discharge fineness of 100 meshes, and crush until the discharge to obtain camellia seed powder. Add cellulase with a mass 0.02 times that of the camellia seed powder, pectinase with a mass 0.03 times that of the camellia seed powder, and pure water with a mass 10 times that of the camellia seed powder. Keep it at 47°C for 24 h, then filter and remove the residue through a 200-mesh sieve. Concentrate it under reduced pressure at 85°C and a vacuum of 600 mbar until the mass is 0.1 times that before evaporation to obtain a concentrated solution. Add 85% ethanol with a mass 4 times that of the concentrated solution, and carry out vacuum distillation at 75°C and a vacuum of 800 mbar until no liquid continuously flows out. Collect the remaining liquid to obtain the camellia seed extract.

[0005] Further, the mass fraction of the HEDP is 13%.

[0006] Further, the mass fraction of the PESA is 10%.

[0007] Further, the mass fraction of the cyclohexylamine is 11%.

[0008] Further, the mass fraction of the carbon fiber filaments is 0.8%.

[0009] Further, the mass fraction of the 3,4-dihydroxyphenethyl alcohol is 1.1%.

[0010] Further, the mass fraction of the sodium lignosulfonate is 1.5%.

[0011] Further, the mass fraction of the camellia seed extract is 17%.

[0012] The following beneficial effects may be brought about by the present application: The energy-saving and efficiency-enhancing agent for boiler water treatment in the present application improves the boiler thermal efficiency by scale inhibition and enhancing the internal heat exchange efficiency in the furnace. On the one hand, it synergistically inhibits scale and complexes metal ions through HEDP, PESA and camellia seed extract; on the other hand, it removes oxygen and antioxidizes through 3,4-dihydroxyphenethyl alcohol and camellia seed extract and raises the pH value through cyclohexylamine to reduce scale formation. The present application also enhances the heat conductivity of the boiler water and scrapes the furnace wall by incorporating carbon fiber filaments, improves the internal heat exchange efficiency in the furnace and reduces scale formation on the furnace wall. Finally, the present application uses the dispersion and stabilization systems such as the tea saponin and cellulose in the sodium lignosulfonate and camellia seed extract, and the mixed boiler water is evenly dispersed after feeding to prevent flocculation or caking. Specific Embodiments

[0013] Herein, to more clearly illustrate the overall concept of the present application, the overall solution of the present invention will be described in detail by way of examples below; in the following description, a large number of specific details are given to provide a more thorough understanding of the present invention; however, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details; in other examples, some technical features well known to the art are not described to avoid confusion with the present invention.

[0014] In the present application, the boiler has a use volume of 0.5 tons and a maximum pressure of 1.25 MPa. After one test, it is washed and then enters the next experiment; 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP) and Polyepoxysuccinic acid (PESA) are purchased from Changzhou Runyang Chemical Co., Ltd., and their contents are 50% and 40% respectively; the CAS number of cyclohexylamine is 108-91-8; the carbon fiber filaments are Torayca T700 carbon fiber filaments from Japan, with a linear density of 800 g / km, and the length used in the present application is 28 mm; the CAS number of sodium lignosulfonate is 8061-51-6; the camellia seeds are produced in the Dabie Mountains, with a moisture content of 8% and an oil yield of 23%; the enzyme activities of cellulase and pectinase are both 20000 U / g.

[0015] Unless otherwise specified, the raw material components in the following embodiments can all be obtained through commercial channels. The experimental instruments used are all conventional laboratory experimental instruments, and the performance testing methods are known testing methods in the art. The overall operating space environment is 25°C and the air humidity is 30%.

[0016] The preferred embodiments are as follows: Example 1: An energy-saving and efficiency-enhancing agent for boiler water treatment is prepared by the following method: Prepare camellia seed extract: Add camellia seeds to a crusher with a feeding speed of 5 kg / h, a rotation speed of 4500 r / min, and a discharge fineness of 100 mesh, and crush until the discharge to obtain camellia seed powder. Add cellulase with a mass 0.02 times that of the camellia seed powder, pectinase with a mass 0.03 times that of the camellia seed powder, and pure water with a mass 10 times that of the camellia seed powder. Keep it at 47°C for 24 h, then filter to remove residues through a 200-mesh filter. Concentrate it by vacuum evaporation at 85°C and a vacuum degree of 600 mbar until the mass is 0.1 times that before evaporation to obtain a concentrated solution. Add 85% ethanol with a mass 4 times that of the concentrated solution, and perform vacuum distillation at 75°C and a vacuum degree of 800 mbar until no liquid continuously flows out. Collect the remaining liquid to obtain the camellia seed extract; Mix 13% by mass of HEDP, 10% by mass of PESA, 11% by mass of cyclohexylamine, 0.8% by mass of carbon fiber filaments, 1.1% by mass of 3,4-dihydroxyphenethyl alcohol, 1.5% by mass of sodium lignosulfonate, 17% by mass of camellia seed extract, and make up the balance with pure water to obtain the energy-saving and efficiency-enhancing agent for boiler water treatment.

[0017] Examples 2 to 15: The difference between Example 2 and Example 1 is only that the mass fraction of HEDP is 10%; The difference between Example 3 and Example 1 is only that the mass fraction of HEDP is 17%; The difference between Example 4 and Example 1 is only that the mass fraction of PESA is 6%; The difference between Example 5 and Example 1 is only that the mass fraction of PESA is 13%; The difference between Example 6 and Example 1 is only that the mass fraction of cyclohexylamine is 8%; The difference between Example 7 and Example 1 is only that the mass fraction of cyclohexylamine is 15%; The difference between Example 8 and Example 1 is only that the mass fraction of carbon fiber filaments is 0.5%; The difference between Example 9 and Example 1 is only that the mass fraction of carbon fiber filaments is 1.1%; Example 10 is only different from Example 1 in that the mass fraction of 3,4-dihydroxyphenethyl alcohol is 0.7%; Example 11 is only different from Example 1 in that the mass fraction of 3,4-dihydroxyphenethyl alcohol is 1.5%; Example 12 is only different from Example 1 in that the mass fraction of sodium lignosulfonate is 0.8%; Example 13 is only different from Example 1 in that the mass fraction of sodium lignosulfonate is 2.2%; Example 14 is only different from Example 1 in that the mass fraction of camellia seed extract is 13%; Example 15 is only different from Example 1 in that the mass fraction of camellia seed extract is 22%.

[0018] Comparative Examples 1 to 25: Comparative Example 1 is only different from Example 1 in that the mass fraction of HEDP is 5%; Comparative Example 2 is only different from Example 1 in that the mass fraction of HEDP is 30%; Comparative Example 3 is only different from Example 1 in that the mass fraction of PESA is 3%; Comparative Example 4 is only different from Example 1 in that the mass fraction of PESA is 25%; Comparative Example 5 is only different from Example 1 in that the mass fraction of cyclohexylamine is 4%; Comparative Example 6 is only different from Example 1 in that the mass fraction of cyclohexylamine is 30%; Comparative Example 7 is only different from Example 1 in that the mass fraction of carbon fiber filaments is 0.1%; Comparative Example 8 is only different from Example 1 in that the mass fraction of carbon fiber filaments is 3%; Comparative Example 9 is only different from Example 1 in that the mass fraction of 3,4-dihydroxyphenethyl alcohol is 0.2%; Comparative Example 10 is only different from Example 1 in that the mass fraction of 3,4-dihydroxyphenethyl alcohol is 4%; Comparative Example 11 is only different from Example 1 in that the mass fraction of sodium lignosulfonate is 0.3%; Comparative Example 12 is only different from Example 1 in that the mass fraction of sodium lignosulfonate is 5%; Comparative Example 13 is only different from Example 1 in that the mass fraction of camellia seed extract is 6%; Comparative Example 14 is only different from Example 1 in that the mass fraction of camellia seed extract is 40%; Comparative Example 15 is only different from Example 1 in that the preparation method of camellia seed extract is kept at 70 °C for 24 h; The difference between Comparative Example 16 and Example 1 is only that in the preparation method of the camellia seed extract, 85% ethanol with a mass 4 times that of the concentrated solution is added and distilled under reduced pressure at 90 °C and a vacuum degree of 800 mbar until no liquid continuously flows out; The difference between Comparative Example 17 and Example 1 is only that in the preparation method of the camellia seed extract, cellulase and pectinase are replaced with pure water of equal mass; The difference between Comparative Example 18 and Example 1 is only that in the preparation method of the camellia seed extract, cellulase is replaced with pectinase of equal mass; The difference between Comparative Example 19 and Example 1 is only that HEDP is replaced with PESA and camellia seed extract in the same mass ratio as in Example 1; The difference between Comparative Example 20 and Example 1 is only that PESA is replaced with HEDP and camellia seed extract in the same mass ratio as in Example 1; The difference between Comparative Example 21 and Example 1 is only that the camellia seed extract is replaced with HEDP and PESA in the same mass ratio as in Example 1; The difference between Comparative Example 22 and Example 1 is only that 3,4-dihydroxyphenethyl alcohol is replaced with camellia seed extract of equal mass; The difference between Comparative Example 23 and Example 1 is only that the camellia seed extract is replaced with 3,4-dihydroxyphenethyl alcohol of equal mass; The difference between Comparative Example 24 and Example 1 is only that sodium lignosulfonate is replaced with camellia seed extract of equal mass; The difference between Comparative Example 25 and Example 1 is only that the camellia seed extract is replaced with sodium lignosulfonate of equal mass; Blank group: In the blank group, no energy-saving and efficiency-enhancing agent for boiler water treatment is placed and it runs directly.

[0019] Prepare boiler batches equivalent to the examples, repeat each example 3 times, and take the average of the results; the specific operation is as follows: Inject water at 20 °C with a volume 0.7 times the maximum water level of the boiler, and put the energy-saving and efficiency-enhancing agent for boiler water treatment with a mass 0.3 times the mass of the injected water. The operation pipeline is a 15 m long output steam insulation pipeline. The steam is transferred to a water-cooled cooler containing 15 tons of 0 °C cold water and condensed to 20 °C, and then flows back to the boiler through a 15 m long condensation return pipeline. Each batch of the examples burns natural gas with a calorific value of 980 MJ evenly and completely at the bottom and runs in a cycle for 1 h, and then measure the water temperature of the water-cooled cooler. Calculate the thermal efficiency of the boiler as the energy-saving and efficiency-enhancing effect, with the unit of %, and keep 2 decimal places after the decimal point. The thermal efficiency of the boiler = (steam heat / input heat) × 100% = [heat increased by the water-cooled cooler / (gas heat - boiler heat increase)] × 100%. The heat formula is Q = m × c × ΔT. The results of the test are shown in Table 1.

[0020] Table 1: Test results of the energy-saving and efficiency-enhancing effects of each example

[0021] As can be seen from the data in Table 1, compared with other examples, the thermal efficiency of the boiler in the embodiment of the present application, especially in Embodiment 1 of the present application, is relatively high; that is, the energy-saving and efficiency-enhancing agent for boiler water treatment in the embodiment of the present application, especially in Embodiment 1 of the present application, can achieve better energy-saving and efficiency-enhancing effects.

[0022] The above are only the embodiments of the present application and are not intended to limit the present application; for those skilled in the art, the present application can have various changes and modifications; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. An energy-saving and efficiency-increasing agent for boiler water treatment, characterized in that, The energy-saving and efficiency-enhancing agent for boiler water treatment is composed of the following: HEDP with a mass fraction of 10-17%, PESA with a mass fraction of 6-13%, cyclohexylamine with a mass fraction of 8-15%, carbon fiber filaments with a mass fraction of 0.5-1.1%, 3,4-dihydroxyphenethyl alcohol with a mass fraction of 0.7-1.5%, sodium lignosulfonate with a mass fraction of 0.8-2.2%, camellia seed extract with a mass fraction of 13-22%, and pure water to make up the balance; The preparation method of the camellia seed extract is as follows: Add camellia seeds into a pulverizer with a feeding speed of 5 kg / h, a rotation speed of 4500 r / min, and a discharge fineness of 100 meshes, and pulverize until the discharge to obtain camellia seed powder. Add cellulase with a mass 0.02 times that of the camellia seed powder, pectinase with a mass 0.03 times that of the camellia seed powder, and pure water with a mass 10 times that of the camellia seed powder. Keep it at 47 °C for 24 h, then filter to remove residues through a 200-mesh sieve. Concentrate it by vacuum evaporation at 85 °C and a vacuum degree of 600 mbar until the mass is 0.1 times that before evaporation to obtain a concentrated solution. Add 85% ethanol with a mass 4 times that of the concentrated solution, and perform vacuum distillation at 75 °C and a vacuum degree of 800 mbar until no liquid continuously flows out. Collect the remaining liquid to obtain the camellia seed extract.

2. The energy-saving and efficiency-increasing agent for boiler water treatment according to claim 1, wherein The mass fraction of the HEDP is 13%.

3. The energy-saving and efficiency-increasing agent for boiler water treatment according to claim 1, characterized in that, The mass fraction of the PESA is 10%.

4. The energy-saving and efficiency-increasing agent for boiler water treatment according to claim 1, characterized in that The mass fraction of the cyclohexylamine is 11%.

5. The energy-saving and efficiency-increasing agent for boiler water treatment according to claim 1, characterized in that, The mass fraction of the carbon fiber filaments is 0.8%.

6. The energy-saving and efficiency-increasing agent for boiler water treatment according to claim 1, characterized in that, The mass fraction of the 3,4-dihydroxyphenethyl alcohol is 1.1%.

7. The energy-saving and efficiency-increasing agent for boiler water treatment according to claim 1, wherein The mass fraction of the sodium lignosulfonate is 1.5%.

8. The energy-saving and efficiency-increasing agent for boiler water treatment according to claim 1, characterized in that, The mass fraction of the camellia seed extract is 17%.

Images