Boiler fire side coke removing agent and method for preparing same

Abstract

The invention relates to a coke-knocking chemical for fire sides of boilers, which is characterized in that, the chemical comprises by weight pure magnesium 2-5, nitrate 3-14, magnesium oxide 1-3, copper carbonate 2-5, magnesium chloride 2-6, copper iodide 1-3 and water 78-79%. The preparing method for the coke-knocking chemical comprises the following procedures: weighing by the weight percentages the raw materials; pouring the raw materials in three groups and into three agitating barrels respectively, heating while agitating, heating to 40-60 DEG C, agitating 2-4 hours, cooling naturally; pouring the three groups of chemicals into a mixing barrel; mixing and agitating 1-2 hours under normal temperature; filtering the mixed chemicals by a filtering channel, checking and canning. The invention can avoid waste in fuel, save energy and cost, prolong the service life in the boiler and the equipment inside the boiler, reduce the downtime due to coke dropping or for knocking coke, and increase the utilization efficiency of the boiler.

Description

technical field

[0001] The invention relates to a boiler fire-side decoking agent and a preparation method thereof, which can be used to prevent or remove coal or fuel oil from coking on the boiler internal fire side, and belongs to the technical field of boiler decoking. Background technique

[0002] At present, the removal of coking on the fire side of the boiler can only be done manually by entering the furnace after the shutdown of the boiler; and the method of preventing coking on the fire side of the boiler is to use combustion-supporting means to make the fuel fully combustible, and then target the ash content after combustion It is acidic and neutralized with powdered decoking agent of basic compound. The formula of powdery decoking agent is as follows:

[0003] Magnesium Oxide 3-5%

[0004] Nitrate 35-60%

[0005] Cerium oxide 10-15%

[0006] Sodium Chloride 5-8%

[0007] Calcium Carbonate 5-8%

[0008] Neodymium oxide 5-10%

[0009] Sodium Carbonate 5-10% ...

Examples

Embodiment 1

[0055] The preparation method of boiler fire side decoking agent, its method is:

[0056] Step 1: weighing raw materials by weight percentage;

[0057] Step 2: Divide ingredients into three groups:

[0058] The first group: composed of ammonium nitrate 5, magnesium chloride 4, copper iodide 2 and water 89;

[0059] The second group: pure magnesium 2, copper carbonate 2, potassium nitrate 10 and water 86;

[0060] The third group: composed of aluminum nitrate 14, magnesium oxide 2 and water 84;

[0061] Step 3: Pour the three groups of raw materials into the mixing tank respectively, stir while heating, heat to 40°C, stir for 2 hours and then cool naturally;

[0062] Step 4: Pour the three groups of medicaments into the mixing tank, and stir and mix at room temperature for 1 hour;

[0063] Step 5: Filter the mixed medicine through the filter tank, check the filling and it is the finished product.

Embodiment 2

[0065] The preparation method of boiler fire side decoking agent, its method is:

[0066] Step 1: weighing raw materials by weight percentage;

[0067] Step 2: Divide ingredients into three groups:

[0068] The first group: ammonium nitrate 7, magnesium chloride 3, copper iodide 3 and water 87;

[0069] The second group: pure magnesium 3, copper carbonate 3, potassium nitrate 7 and water 87;

[0070] The third group: composed of aluminum nitrate 8, magnesium oxide 3 and water 89;

[0071] Step 3: Pour the three groups of raw materials into the mixing tank respectively, stir while heating, heat to 60°C, stir for 4 hours and then cool naturally;

[0072] Step 4: Put the three groups of medicaments that have been stirred into the mixing tank, and stir and mix at room temperature for 2 hours;

[0073] Step 5: Filter the mixed medicine through the filter tank, check the filling and it is the finished product.

[0074] Performance comparison table between the present invention ...

technical field

[0001] The invention relates to a boiler fire-side decoking agent and a preparation method thereof, which can be used to prevent or remove coal or fuel oil from coking on the boiler internal fire side, and belongs to the technical field of boiler decoking. Background technique

[0002] At present, the removal of coking on the fire side of the boiler can only be done manually by entering the furnace after the shutdown of the boiler; and the method of preventing coking on the fire side of the boiler is to use combustion-supporting means to make the fuel fully combustible, and then target the ash content after combustion It is acidic and neutralized with powdered decoking agent of basic compound. The formula of powdery decoking agent is as follows:

[0003] Magnesium Oxide 3-5%

[0004] Nitrate 35-60%

[0005] Cerium oxide 10-15%

[0006] Sodium Chloride 5-8%

[0007] Calcium Carbonate 5-8%

[0008] Neodymium oxide 5-10%

[0009] Sodium Carbonate 5-10% ...

Examples

Embodiment 1

[0055] The preparation method of boiler fire side decoking agent, its method is:

[0056] Step 1: weighing raw materials by weight percentage;

[0057] Step 2: Divide ingredients into three groups:

[0058] The first group: composed of ammonium nitrate 5, magnesium chloride 4, copper iodide 2 and water 89;

[0059] The second group: pure magnesium 2, copper carbonate 2, potassium nitrate 10 and water 86;

[0060] The third group: composed of aluminum nitrate 14, magnesium oxide 2 and water 84;

[0061] Step 3: Pour the three groups of raw materials into the mixing tank respectively, stir while heating, heat to 40°C, stir for 2 hours and then cool naturally;

[0062] Step 4: Pour the three groups of medicaments into the mixing tank, and stir and mix at room temperature for 1 hour;

[0063] Step 5: Filter the mixed medicine through the filter tank, check the filling and it is the finished product.

Embodiment 2

[0065] The preparation method of boiler fire side decoking agent, its method is:

[0066] Step 1: weighing raw materials by weight percentage;

[0067] Step 2: Divide ingredients into three groups:

[0068] The first group: ammonium nitrate 7, magnesium chloride 3, copper iodide 3 and water 87;

[0069] The second group: pure magnesium 3, copper carbonate 3, potassium nitrate 7 and water 87;

[0070] The third group: composed of aluminum nitrate 8, magnesium oxide 3 and water 89;

[0071] Step 3: Pour the three groups of raw materials into the mixing tank respectively, stir while heating, heat to 60°C, stir for 4 hours and then cool naturally;

[0072] Step 4: Put the three groups of medicaments that have been stirred into the mixing tank, and stir and mix at room temperature for 2 hours;

[0073] Step 5: Filter the mixed medicine through the filter tank, check the filling and it is the finished product.

[0074] Performance comparison table between the present invention ...