Urgently need recommendations for 130 t/h gas boilers (multiple units are acceptable)

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The company I work for needs to install a gas boiler; at 180°C, the composition of the gas is: N2 (41.8%), H2 (15.6%), CH4 (2.3%), CO (18.4%), CO2 (6.6%), H2O (15.4%)； The absolute pressure is 0.107 Mpa, the calorific value is around 1150, and the gas volume is approximately 15,000 m3 ； The ash content is around 20 mg/Nm3, and the H2S content is 700 mg/m3. It is planned to use this condition in the boiler for combustion in order to generate 130 t/h of steam (for central heating: the highest required parameter for downstream users is saturated steam at 1.6 Mpa; the farthest distance is 4 KM), with the gas not being pressurized. The burned gas is required to have NOX levels of around 100 and SOx levels of around 35. So the questions are: (1) Considering operating costs, it is planned to use a saturated steam boiler at around 2.4 MPa ； (2) In terms of boiler design: how to choose between SZS and SHS, as well as between vertical and horizontal configurations? (3) Off-furnace denitration is too expensive; it is planned to use low-NOx burners and in-furnace denitration. A desulfurization system is necessary, that’s certain. What type of burner should be chosen? (4) The manufacturer has confused me with regard to my own project; it’s different from what I saw in the documents, and I don’t know whom to trust. Dear experts, are there any recommended solutions or experts in this field? First: I need guidance on choosing the type of burner and boiler ； Second: Are there any relatively authoritative manufacturers who can be consulted or with whom cooperation can be established? Thank you all.